U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

Bibliography of the Pacific to Crustal Experiment (PACE) Investigation of a Transect of the Lithosphere across the Southwestern United States

Compiled by Keith A. Howard and Ruby M. Harper'1

Open-file Report 92-511-A

1992

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American stratigraphic code. Any use of trade, product, or firm names is for descriptive purpose only and does not imply endorsement by the U.S.Government.

iMenlo Park, CA 94025 CONTENTS

Introduction 3 PACE workshops, seminars, and symposia 4 Workshops 4 Seminars 4 Symposia 6 Publications 7 General publications 7 Reports 7 Abstract 7 Seismology 8 Reports 8 Abstracts 10 Heat-flow 13 Abstracts 13 Electrical conductivity 13 Reports 13 Abstract 14 Gravity and magnetics 14 Reports . 14 Abstracts 14 PACE-related reports and abstracts 15 Paleomagnetics 17 Reports 17 Abstracts 17 Petrology and isotope geology 18 Reports 18 Abstracts 20 PACE-related reports and abstracts 24 Geology 26 Reports 26 Abstracts 35 PACE-related reports and abstracts 40 Alphabetic list of publications 44

PACE STEERING COMMITTEE

Warren B. Hamilton - U.S.G.S., Denver, Colorado Gordon B. Haxel - U.S.G.S., Flagstaff, Arizona Keith A. Howard (coordinator) - U.S.G.S., Menlo Park, Ivo Lucchitta - U.S.G.S., Flagstaff, Arizona Peter E. Malin - University of California, Santa Barbara, California (now at Duke University, Durham, North Carolina) Douglas M. Morton - U.S.G.S., Riverside, California David Okaya - CALCRUST & University of Southern California, Los Angeles, California John H. Sass - U.S.G.S., Flagstaff, Arizona Robert W. Simpson - U.S.G.S., Menlo Park, California John G. Vedder - U.S.G.S., Palo Alto, California INTRODUCTION

The U.S. Geological Survey initiated the Pacific to Arizona Crustal Experiment (PACE) in 1984 as an investigation of crustal structure and processes in a transect across the southern U.S. Cordillera. The transect extends from the to the Pacific Basin. The PACE project consists of coordinated multidisciplinary geophysical and geological studies designed to mesh with seismic reflection experiments conducted by groups of university scientists along the same transect. The southern Cordillera of the United States and its offshore borderland is an excellent place to study tectonic processes of crustal growth, reworking, and deformation at a continental margin. This region contains a wide variety of geologic terranes and provinces formed by tectonic and magmatic processes including accretion, arc magmatism, terrane dispersal, and rifting. PACE investigations have focused on the nature of the boundaries between terranes and provinces, their configuration at deep crustal levels, and the tectonic processes responsible for their assembly and deformation. The PACE strategy has been to gather many kinds of complementary data on this transect, explore them in workshops, seminars, and symposia held with other workers active in the region, report the results, and integrate them toward a synthesis of crustal evolution. Work on the east or North-American-plate half of the transect has yielded important information on: crustal thickness, velocity structure of the crust and upper mantle, seismic reflectors, geologic mapping, gravity and aeromagnetic anomalies, isotopic crustal boundaries, paleomagnetic rotations, Proterozoic tectonics and state of stress, Mesozoic crustal thickening, magmatism, and uplift, Cenozoic extension, uplift of metamorphic core complexes, cooling and uplift history, crustal conductivity, lower-crustal xenolith petrology, heat flow, and thickness of magnetic crust. These data provide an unusually multifaceted picture of crustal evolution. Important new information in southwestern California includes aeromagnetic definition of a major boundary in the Peninsular Ranges batholith, geobarometric evidence that the batholith is tilted, improved understanding of Miocene magmatism on Catalina Island, seismic profiling offshore, and definition of onshore velocity structure using offshore seismic sources. This report lists scientific gatherings and publications sponsored by PACE, as of mid-1992, for which partial or full support was provided by the Deep Continental Studies Program of the U.S. Geological Survey. The Deep Continental Studies Program, administered at various times by B. Morgan, D. Russ, R. Hamilton, and S. Bohlen, worked in concert with other budgeted programs to support the PACE investigations. Products listed here are arranged by scientific discipline, and are divided into reports and abstracts that directly focus on the PACE transect, and "PACE-related reports and abstracts" considered as other scientific spin-offs. American Geophysical Union, (1992) reprinted a volume of reports on the transect that originally appeared in the Journal of Geophysical Research. PACE WORKSHOPS, SEMINARS, AND SYMPOSIA

WORKSHOPS Cenozoic volcanism -- January 10-11, 1985, Flagstaff, AZ PACE and CALCRUST Steering Committees - May 16,19X5, Santa Barbara, CA Early Proterozoic of Arizona [USGS-Cakech- University-Arizona Geological Survey] - October 3-5,1985, Flagstaff, AZ California-Arizona crustal transect-interim synthesis (CACTIS) - May 6-8,1988, Flagstaff, AZ Peninsula Ranges/Borderland [CALCRUST-USGS] -March27-28,1989, Pasadena, CA Thermal structure -- September 19,1990, Menlo Park, CA Geologic mapping along the PACE corridor - August 13-14, 1991, Flagstaff, AZ East margin of the extensional corridor -- August 15-16, 1991, Flagstaff, AZ Crustal structure of the - October 8-9,1991, Flagstaff, AZ Magmatism within and beneath metamorphic core complexe , PACE transect and - October 10-11, 1991, Flagstaff, AZ Crustal thickness beneath the Colorado Plateau ~ December 8, 1991, Menlo Park, CA Construction of an interpretive deep cross section along the PACE transect - September 28-29,1992 (planned), Menlo Park, CA

SEMINARS 1985

Mohon Mountains volcanic field - David Nealey and Wesley Ward

1986

Geology of the Prescott 2-degree sheet ~ Clay Conway Gravity of the Prescott 2-degree sheet ~ John Hendricks andJ.B. Plescia PACE seismic refraction experiment ~ Jill McCarthy Lead isotopes - Joe Wooden Gravity and magnetics in southern California ~ Robert Jacheiis, Robert Simpson, and Andrew Griscom The McCoy Mountains Formation and other Mesozoic strata ~ Paul Stone and Richard Tosdal Crustal and mantle xenoliths - Howard Wilshire and Frank Dodge Palinspastic reconstructions of the San Andreas fault system -- Jonathan Matti PACE updates ~ Gary Fuis and others Historic vertical motions in the Salton Trough and southeastern California Thomas Gilmore and Robert Castle Relations between the stable Colorado Plateau and the extended Basin and Range terrane in Arizona -- Ivo Lucchitta A brief report on COCORP results -- //// McCarthy The evidence for short-lived, rampant extension 20-22 million years ago ~ David Sherrod

1987

More on the crystalline terranes of southern California and their reconstruction - Robert Powell Reflection profiles in the Colorado River region - David Okaya Fluids gushing through the middle crust-Evidence from the Late Cretaceous regional metamorphism in southeastern California ~ Thomas Hoisch Conditions and causes of Late Cretaceous regional metamorphism in the Big and , southeastern California - Thomas Hoisch COCORP profile across the Colorado Plateau and Transition zone to the metamorphic core complexes - Ernest Mauser Seismic reflection imaging of the Transition Zone, west-central Arizona A piggyback experiment to the USGS PACE refraction survey -- Erik Goodwin

1988

The Orocopia-Pelona Schist: An oceanic terrane incorporated into or beneath southern California & southwestern Arizona ~ Gordon Haxel PACE refraction results-A progress report ~ //// McCarthy Refraction results from the 1985 PACE Whipple survey - Jill McCarthy

1989

The Tertiary dike swarm ~ Vicky Pease Shooting Arizona: The PACE barbeque and crustal structure seminar - Jill McCarthy SYMPOSIA

PACE-Pacific to Arizona Crustal Experiment -- Geological Society of America Rocky Mountain Section Meeting, Flagstaff, AZ, 1986 Nature and evolution of the crust in southern California ~ Geological Society of America Cordilleran Section Meeting, 1986 Southwestern USA xenolith suite of the lower crust and upper mantle Geological Society of America Cordilleran Section Meeting, Los Angeles, CA, 1986 California-Arizona crustal transect: Detachment terrane to Colorado Plateau [COCORP and PACE] Geological Society of America Annual Meeting, Phoenix, AZ, 1987 PACE ~ Lithospheric Structure of the Colorado Plateau - American Geophysical Union Fall Meeting, San Francisco, CA 1990 PUBLICATIONS

GENERAL PUBLICATIONS

Reports

1988

Sass, J.H., Haxel, G.B., and Lucchitta, Ivo, 1988, CACTIS meeting examines crustal transect: Arizona Geology, v. 18, p. 7.

1990 Haxel, G.B., Simpson, R.W., and Howard, K.A., 1990, Introduction to Special Section on the California- Arizona Crustal Transect-Part II: Journal of Geophysical Research, v. 95, p. 19,949-19,951. Howard, K.A., Simpson, R.W., and Haxel, G.B., 1990, Introduction to Special section on the California- Arizona crustal transect-Part I: Journal of Geophysical Research, v. 95, p. 461-462. Lucchitta, Ivo, and Morgan, Paul, 1990, Heat and detachment in continental extension: Introduction, in Lucchitta, Ivo, and Morgan, Paul, eds., Heat and Detachment in Continental Extension: Tectonophysics, v. 174, p. 3-5.

1991

Simpson, R.W., Howard, K.A, and Haxel, G.B., 1991, Introduction to Special Section on the California- Arizona Crustal Transect-Part III: Journal of Geophysical Research, v. 96, p. 12,257-12,258.

1992

American Geophysical Union, 1992, California-Arizona Crustal Transect-Interim Synthesis (CACTIS), Reprints of papers published in the Journal of Geophysical Research-Solid Earth and Planets: Washington, D.C., American Geophysical Union. Howard, K.A., and Harper, R.M., 1992, Bibliography of the Pacific to Arizona Crustal Experiment (PACE)-- Investigation of a transect of the crust and lithosphere across the southwestern United States: U.S. Geological Survey Open-File Report 92-551-A (63 p., paper copy), 92-551-B (Macintosh diskette), 92-551- C (IBM diskette).

Abstract

1986

Howard, K.A., and the PACE team, 1986, PACE-The Pacific to Arizona Crustal Experiment: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 362. SEISMOLOGY

Reports 1986

Borcherdt, R., Fuis, G.S., Mooney, W., 1986, Introduction, in Wennerberg, L., ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): U.S. Geological Survey Open-File Report 86-387, p. 1. Borcherdt, R., Fuis, G.S., Mooney, W., Wennerberg, L., Sembera, E., Gibbs, J. and Dietel, C., 1986, Site- selection and instrumentation configurations, in Wennerberg, L., ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): U.S. Geological Survey Open-File Report 86-387, p. 5-8. Serna, J., Warrick, R., Borcherdt, R., Dietel, C., Gibbs, J., and Maxwell, G., 1986, Instrumentation, in Wennerberg, L., ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): Open-File Report 86-387, p. 2-4. Wennerberg, L., 1986, ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985] : U.S. Geological Survey Open-File Report 86- 387. Wennerberg, L., Sembera, E., Borcherdt, R., Gibbs, J., Dietel, C., Watson, J., and Cranswick, E., 1986, Velocity and acceleration time histories, in Wennerberg, L., ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): U.S. Geological Survey Open-File Report 86-387, p. 9-10. Wennerberg, L., and Borcherdt, R., 1986, Calibration spectra; in Wennerberg, L., ed., Three-component digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): Open-File Report 86-387, p. 11.

1987

McCarthy, Jill, Fuis, G.S., and Wilson, Jeff, 1987, Crustal $ tructure of the , southeastern California: a refraction study across a region of large continental extension: Geophysical Journal Royal Astronomical Society, v. 89, p. 119-124. Wilson, J.M., and Fuis, G.S., 1987, Data report for the Chemehuevi, Vidal, and lines, PACE, Seismic-Refraction Survey, southeastern California, and western Arizona: U.S. Geological Survey Open- File Report 87-86, 75 p.

1988

Larkin, S.P., McCarthy, J., and Fuis, G.S., 1988, Data report for the PACE 1987 seismic refraction survey, west-central Arizona: U.S. Geological Survey Open-File Report 88-694,95 p. McCarthy, J., and Thompson, G.A., 1988, Seismic imaging of extended crust with emphasis on the western U.S.: Geological Survey of America Bulletin, v. 100, p, 1,361-1,374.

1989

Goodwin, E.B., Thompson, G.A., and Okaya, D.A., 1989, Seismic identification of basement reflectors: the Bagdad reflection sequence in the Basin and Range-Colorado Plateau Transition Zone: Tectonics, v. 8, p. 821-831. Hussey, V.K., 1989, A three-component seismic refraction survey in northwestern Arizona [M.S. thesis]: Boston, Mass., Boston College, 161 p.

1990

Goodwin, E.B., 1990, Composition of the lower crust in West-Central Arizona from three-component seismic data: Journal of Geophysical Research, v. 95, p. 20,097-20,109. Goodwin, E.B., and McCarthy, Jill, 1990 Composition of the lower crust in west central Arizona from three- component seismic data: Journal of Geophysical Research, v. 95, p. 20,097-20,110. McCarthy, J., and Thompson, G.A., 1990, Reply to comment on: "Seismic imaging of extended crust with emphasis on the western U.S.": Geological Society of America Bulletin, v. 102, p. 255. McCarthy, J., and Thompson, G.A., 1990, Seismic imaging of extended crust with emphasis on the western U.S., in Thomas, W.A., and Hatcher, R.D., Jr., eds., Geological Society of America Centennial Articles, Special Paper 253, p. 263-276. Thompson, G.A., and McCarthy, J., 1990, A gravity constraint on the origin of highly extended terranes: Tectonophysics, v. 174, p. 197-206.

1991

Howie, J.M., 1991, Seismic Studies of Crustal Structure and Tectonic Evolution Across the Central California Margin and the Colorado Plateau [Ph.D. thesis]: Stanford, California, Stanford University, 256 p. Howie, J.M., Parsons, T., and Thompson, G.A., 1991, High-resolution P- and S-wave deep crustal imaging across the edge of die Colorado Plateau, USA: Increased reflectivity caused by initiating extension, in Meissner, R., Brown, L., Durbaum, H-J., Franke, W., Fuchs, K., and Seifert, F., eds., Continental Lithosphere: Deep Seismic Reflections: American Geophysical Union Geodynamics Series, v. 22, p. 21- 29. Johnson, R.A., and Hartman, K.A., 1991, Upper crustal Poisson's ratios in the Colorado Plateau, northern Arizona, from multi-component wide-angle seismic recording, in Meissner, R., Brown, L., Durbaum, H-J., Franke, W., Fuchs, K., and Seifert, F., eds., Continental Lithosphere: Deep Seismic Reflections: American Geophysical Union Geodynamics Series, p. 323-328. McCarthy, Jill, Larkin, S.P., Fuis, G.S., Simpson, R.W., and Howard, K.A., 1991, Anatomy of a metamorphic core complex: Seismic refraction/wide-angle reflection profiling in southeastern California and western Arizona: Journal of Geophysical Research, v. 96, p. 12,259-12,292. McCarthy, J., and Thompson, G.A., 1991, Reply to Comment on: "Seismic imaging of extended crust with emphasis on the western U.S.": Geological Society of America Bulletin, v. 103, p. 1,539-1,542. Wilson, J.M., McCarthy, Jill, Johnson, R.A., and Howard, K.A., 1991, An axial view of a metamorphic core complex: Crustal structure of the Whipple and , southeastern California: Journal of Geophysical Research, v. 96, p. 12,293-12,312.

In Press

Howie, J.M., Parsons, T., and Thompson, G.A., in review, Composition as a control on localization of reflectivity in Uie middle crust: Deep seismic reflection results across the southwestern margin of the Colorado Plateau: Journal of Geophysical Research, submitted. Parsons, T., Howie, J.M., and Thompson, G.A., in press, Seismic constraints on the nature of lower crustal reflectors beneath the extending southern Transition Zone of the Colorado Plateau, Arizona: Journal of Geophysical Research. Ruppert, S., in prep., Variations in shear-wave crustal structure across the southern Basin & Range ~ Colorado Plateau transition zone: for Journal of Geophysical Research. Ruppert, S., in prep., Variations in upper mantle anisotropy across the southern Basin & Range ~ Colorado Plateau transition zone: for Journal of Geophysical Research. Wolf, L.W., and Cipar, J.J., in-review, The Colorado Plateau: Through thick and thin: Journal of Geophysical Research.

Abstracts

1986

Fuis, G.S., McCarthy, J., and Howard, K.A., 1986, A seismic-refraction survey of the Whipple Mountains metamorphic core complex, southeastern California: A progress report from PACE: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 356.

Fuis, G.S., Walter, A.W., Mooney, W.D., and McCarthy, J., 1986, Crustal velocity of the Salton Trough, western , and , from seismic refraction: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 107. !

Malin, P.E., and McCarthy, J., 1986, CALCRUST-PACE cooperative refraction study in the Whipple Mountains region of southeastern California: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 153. j McCarthy, J., Fuis, G.S., and Howard, K.A., 1986, A seismic-refraction survey of the Whipple Mountains metamorphic core complex, southeastern California: A progress report from PACE: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 155.

McCarthy, J., Fuis, G.S., and Wilson, J.M., 1986, Crustal structure of the Whipple Mountains metamorphic core complex: 2nd International Symposium on Deep Seismic Reflection Profiling of the Continental Lithosphere, Cambridge, U.K.: Abstracts of lectures and posters, p. 15. Thompson, G.A., and McCarthy, J., 1986, A gravity constraint on the origin of highly extended terranes: Geological Society of America Abstracts with Programs, v. 18, p. 418.

Thompson, G.A., and McCarthy, J., 1986, Geophysical evidence for igneous inflation of the crust in highly extended terranes: EOS, American Geophysical Union T-ansactions, v. 67, p. 1,184.

1987

McCarthy, J., Fuis, G.S., and Wilson, J.M., 1987, Crustal structure in the region of the Whipple Mountains metamorphic core complex, from seismic refraction results: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 763.

McCarthy, J., Fuis, G.S., Wilson, J.M., McKissick, C, and Larkin, S., 1987, PACE Seismic refraction and wide-angle reflection data recorded across the central Arizona transition zone: EOS, American Geophysical Union Transactions, v. 68, p. 1,359.

Wilson, J.M., Geist, E.L., Tosdal, R.M., Okaya, D., and Frost, E., 1987, Crustal structure of the region, SE California, from industry seismic profiles: EOS, American Geophysical Union Transactions, v. 68, p. 1,360.

1988

Hussey, V.K., 1988, A comparison of shear wave velocity strictures of the Colorado Plateau and the Basin and Range: EOS, American Geophysical Union Transactions;, v. 69, p. 404.

1 0 Larkin, S.P., McCarthy, J., and Fuis, G.S., 1988, Crustal structure of the Basin and Range/Colorado Plateau transition zone in central Arizona: Preliminary results from seismic refraction: Seismological Research Letters, v. 59, p. 50. McCarthy, J., Larkin, S.P., and Fuis, G.S., 1988, Crustal structure of the Basin and Range Province and adjacent Transition Zone in central Arizona, U.S.A., from seismic refraction and wide-angle reflection profiling: Australian Bureau of Mineral Resources, Implications for continental extension: Seismic Probing of Continents and Their Margins, p. 92.

Wilson, J.M., McCarthy, J., and Johnson, R., 1988, Middle and lower crustal structure of the Whipple Mountain metamorphic core complex: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A355.

1989

Howie, J.M., Parsons, T., and Crews, G., 1989, Deep-crustal high-resolution reflection profiling across the edge of the Colorado Plateau: EOS, American Geophysical Union Transactions, v. 70, p. 1,361. Johnson, R.A., and Hartman, K.A., 1989, The Arizona PACE-Piggyback Lithospheric Experiment (APPLE): Vertical-incidence to wide-angle reflection data from the Colorado Plateau: EOS, American Geophysical Union Transactions, v. 70, p. 1,205. McCarthy, J., Criley, E., and Kohler, W., 1989, PACE seismic refraction and wide-angle reflection data recorded across the Colorado Plateau: EOS, American Geophysical Union Transactions, v. 70, p. 1,205. McCarthy, J., Fuis, G.S., Larkin, S.P., and Wilson, J.M., 1989, Evidence for magmatic inflation of the crust beneath metamorphic core complexes in western Arizona and southeastern California: Geological Society of America Abstracts with Programs, v. 21, n. 5, p. 113-114.

1990

Battis, J.C., 1990, Analysis of small aperture array data from the 1989 PACE experiment: EOS, American Geophysical Union Transactions, v. 71, p. 1,563. Beaudoin, B., Howie, J.M., Parsons, T., and Thompson, G.A., 1990, Integrated wide-angle and near-vertical incidence three-component reflection profiling of the Colorado Plateau margin, Arizona, USA: EOS, American Geophysical Union Transactions, v. 71, p. 1,593. Benz, H.M., McCarthy, J., and Mooney, W.D., 1990, Evidence for an upper mantle LVZ and an underlying 80- km-deep discontinuity from the 1987-1989 PACE seismic refraction/wide-angle reflection data: EOS, American Geophysical Union Transactions, v. 71, p. 1,564.

Cipar, J., Mangino, S., and D'Annolfo, S., 1990, Preliminary interpretation of the 1989 PACE seismic refraction/wide-angle reflection data from the Colorado Plateau, Arizona: Seismological Research Letters, v. 61, n. 1, p. 39. D'Annolfo, S., Cipar, J., and Wolf, L., 1990, Long-range observations of PACE shots on the Colorado Plateau cross-line observations: EOS, American Geophysical Union Transactions, v. 71, p. 1,594.

Dawson, P.B., lyer, H.M., Evans, J.R., and Hitchcock, T., 1990, PACE: Teleseismic tomography along the Pacific-Arizona Crustal Transect, EOS, American Geophysical Union Transactions, v. 71, p. 1,564-1,565. Hartman, K.A., and Johnson, R.A., 1990, P- and S-Wave velocities and Poisson's ratios beneath the Colorado Plateau from recording of wide-angle seismic data: EOS, American Geophysical Union Transactions, v. 71, p. 1,564.

1 1 Hartman, K.A., and Johnson, R.A., 1990, Constraints on crustal structure in the Colorado Plateau: Results from the Arizona PACE Piggyback Lithospheric Experiment (APPLE): Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 28. Howie, J.M., Parsons, T., and Thompson, G.A., 1990, High-resolution reflection imaging across the edge of the Colorado Plateau, Arizona, USA: TERRA Abs., v. :>, p. 174.

Howie, J.M., Parsons, T., and Thompson, G.A., 1990, Full-wavefield analysis of lower crustal reflectivity at the SW margin of the Colorado Plateau, Arizona: EOS, American Geophysical Union Transactions, v. 71, p. 1,563. Johnson, R.A., and Hartman, K.A., 1990, Constraints on P- and S-wave velocity structure in the Transition Zone of the Colorado Plateau from multicomponent wide-angle seismic data: TERRA Abs., v. 2, p. 173. Kohler, W., and McCarthy, J., 1990, PACE seismic reflection and wide-angle reflection studies of the Colorado Plateau - Basin and Range transition, Arizona: EOS, American Geophysical Union Transactions, v. 71, p. 1,593. McCarthy, J., Hajnal, Z., Howel, J., Johnson, R.A., Keller, j.R., and Wolf, L.W., 1990, PACE lithospheric investigations of the Colorado Plateau: EOS, American Geophysical Union Transactions, v. 71, n. 3, p. 1,563.

McCarthy, J., Okaya, D.A., and Goodwill, E.B., 1990, Geopl ysical character of the middle and lower crust in the southwestern U.S.: Results from seismic profiling: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 65-66.

McCarthy, J., and Kohler, W., 1990, Preliminary two-dimensional modeling of the crustal structure across the Colorado Plateau - Basin and Range transition, Arizona: EOS, American Geophysical Union Transactions, v. 71, p. 1,564.

McCarthy, J., Okaya, D.A., and Goodwill, E.B., 1990, Seismjic character of the middle and lower crust in the southwestern United Slates: TERRA Abs., v. 2, p. 187. Montana, C., Keller, G.R., Doser, D.I., Baker, M.R., and Harder, S., 1990, The PACE 1989 seismic experiment: Initial results from the cross profile: EOS, American Geophysical Union Transactions, v. 71, p. 1,594.

Parsons, T., Howie, J.M., and Thompson, G.A., 1990, Fu 1-wavefield imaging of the Colorado Plateau: Geological Society of America Abstracts with Programs, V. 22, n. 7, p. A205.

Parsons, T., Howie, J.M., and Thompson, G.A., 1990, Imaging the initial stages of extension at the edge of the Colorado Plateau, Chino Valley, Arizona: EOS, American Geophysical Union Transactions, v. 71, p. 1,563.

Parsons, T., McCarthy, J., Howie, J.M., and Thompson, G.A, , 1990, Full-wavefield imaging of the Colorado Plateau, Arizona, USA: TERRA Abs., p. 203. Ruppert, S., 1990, Teleseismic shear-wave response of the cru it and upper mantle across the southwest margin of the Colorado Plateau, Arizona: EOS, American Geophysical Union Transactions, v. 71, p. 1,564.

Wolf, L., D'Annolfo, S., and Cipar, J., 1990, Crustal structure across the , Arizona, from PACE cross-line observations: EOS, American Geophysical Unian Transactions, v. 71, p. 1,593.

1991

Ammon, C.J., and Benz, II.M., 1991, A finite-difference based inversion of Pg arrival times: EOS, American Geophysical Union Transactions, v. 72, p. 334-335.

1 2 Durrani, B.A., Doser, D.I., Keller, G.R., Roberts, D.G., and Montana, C.J., 1991, Results for the PACE 1989 seismic line in northern Arizona: Colorado Plateau crustal structure: EOS, American Geophysical Union Transactions, v. 72, p. 327. Johnson, R.A., and Harunan, K.A., 1991, P- and S-Wave reflectivity and crustal structure of the southern Colorado Plateau: EOS, American Geophysical Union Transactions, v. 72, p. 324.

Wolf, L.W., and Cipar, J.J., 1991, A new crustal model of the Colorado Plateau: Results from the 1989 Pacific to Arizona Crustal Experiment: EOS, American Geophysical Union Transactions, v. 72, p. 327.

Wolf, L.W., Cipar, J.J., and D'Annolfo, Susan, 1991, Evaluation of crustal models of the Colorado Plateau in view of 1989 PACE seismic refraction/wide-angle reflection data: Geological Society of America Abstracts with Programs, v. 23, n. 4, p. 107. 1992

Dawson, P.B., lyer, H.M., and Evans, J.R., 1992, PACE: Inversion of teleseismic residuals from the USGS teleseismic experiment, Arizona, Seismology Research Letters, v. 63, p. 39.

HEAT FLOW

Abstracts

1987 Sass, J.H., and Lachenbruch, A.H., 1987, Heat-flow field of the California-Arizona crustal experiment and adjacent areas: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 829.

1991

Lachenbruch, A.H., Sass, J.H., Galanis, S.P., Jr., and Priest, S.S., 1991, Thermal regime of the southern Basin and Range, U.S.A., and its metamorphic-core complexes: Geophysical Institute, Czechoslovakia Academy of Sciences: International Meeting on Terrestrial Heat How and the Structure of Lithosphere, Abstract Program.

Morgan, Paul, and Sass, J.H., 1991, Thennal structure and crustal processes in contrasting tectonic provinces of Arizona: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A23.

ELECTRICAL CONDUCTIVITY

Reports

1987

Klein, D.P., and Sneddon, R.A., 1987, Magnetotelluric data across west central Arizona: U.S. Geological Survey Open-File Report 87-492, 18 p.

1991

Klein, D.P., 1991, Crustal resistivity structure from magnetoielluric soundings in the Colorado Plateau-Basin and Range Provinces, central and western Arizona: Journal of Geophysical Research, v. 96, p. 12,313- 12,331.

1 3 Abstract

1986

Klein, D.P., 1986, Magnetotelluric observations across the Colorado Plateau-Basin and Range transition zone, western'Arizona, Geological Society of America Abstract;; with Programs, v. 118, n. 5, p. 367.

GRAVITY AND MAGNETICS

Reports

1986

Mariano, John, Helferty, M.G., and Gage, T.B., 1986, Bouguer and isostatic residual gravity maps of the Colorado River region, including the Kingman, Needles, Salton Sea, and El Centro Quadrangles: U.S. Geological Survey Open-File Report 86-347, 6 sheets, scale 1:250,000, 1 sheet, scale 1:750,000.

1988

Mariano, John, and Grauch, V.J.S., 1988, Aeromagnetic maps of the Colorado River region including the Kingman, Needles, Salton Sea, and El Centro 1° x 2° quadrangles, California, Arizona, and : U.S. Geological Survey Miscellaneous Field Studies Map MF-1023, 3 sheets, scale 1:250,000.

1990

Griscom, Andrew, and Jachens, R.C., 1990, Crustal and lithospheric structure from gravity and magnetic studies, in Wallace, R.E., ed., The San Andreas fault; system, California: U.S. Geological Survey Professional Paper 1515, p. 238-259.

U.S. Geological Survey, 1990, Aeromagnetic map of parts of the San Diego, Santa Ana, and adjacent 1° x 2° quadrangles, California: U.S. Geological Survey Open-File Report 90-206, 1 sheet, scale 1:250,00.

1991 I

Hendricks, J.D., and Plescia, J.B., and Malic, A.K., 1991, Complete Bouguer gravity map of the Bagdad 1/2° by 1° quadrangle, Arizona: U.S. Geological Survey OpentFile Report 91-640, scale 1:100,000.

Abstracts

1986

Hendricks, J.D., and Plescia, J.B., 1986, Gravity survey of the Prescott 2-degree sheet: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 361.

Jachens, R.C., Simpson, R.W., Griscom, Andrew, and Mariano John, 1986, Plutonic belts in southern California defined by gravity and magnetic anomalies: Geological Society of America Abstracts with Programs, v. 18, p. 120.

Mariano, John, Jachens, R.C., Blakely, R.J., 1986, Depth e tent of exposed basement rock in the eastern and adjacent Mojave Desert, California EOS, American Geophysical Union Transactions, v. 67, p. 1,212.

Simpson, R.W., Jachens, R.C., Mariano, John, and Helferty, M.G., 1986, Gravity and magnetic studies of the Colorado River region, California and Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 414. >

1 4 1987

Gray, Floyd, Jachens, R.C., Miller, R.J., and Mariano, John, 1987, An interpretation of the shallow crustal structure of the Black Mountains, northwest Arizona: computer generated modeling and structural compilation: Geological Society of America with Programs, v. 19, p. 682. Plescia, J.B., and Hendricks, J.D., 1987, Gravity observations across the Colorado Plateau-Basin and Range transition zone of Arizona: Geological Society of America Abstracts with Programs, v. 19, p. 807. 1988

Griscom, Andrew, Jachens, R.C., Oliver, Howard W., and Kleinkopf, M. Dean, 1988, Suture-related gravity and magnetic expression of the three major batholitlis in western United States: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A400.

1989

Saltus, R.W., and Jachens, R.C., 1989, Basement gravity and depth-to-basement maps of Arizona, Nevada, , and SE California: EOS, American Geophysical Union Transactions, v. 70, p. 1,361.

1990

Simpson, R.W., Howard, K.A., Jachens, R.C., and Mariano, J., 1990, A positive gravity anomaly along the Colorado River extensional corridor: Evidence for new crustal material: EOS, American Geophysical Union Transactions, v. 71, p. 1,594.

1991

Jachens, R.C., Todd, V.R., Morton, D.M., and Griscom, Andrew, 1991, Constraints on the structural evolution of the Peninsular Ranges batholith, California, from a new aeromagnetic map: Geological Society of America Abstracts with Programs, v. 23, n. 2, p. 38.

Saltus, R.W., Blakely, R.J., Jachens, R.C., Simpson, R.W., and Hildenbrand, T.G., 1991, Potential field constraints on Cordilleran tectonics: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A22.

PACE-related Reports and Abstracts

1986

Calzia, J.P., Verosub, K.L., and Jachens, R.C., 1986, Tilting and faulting of the Late Miocene Kingston Peak Granite, southern Death Valley, California: American Geophysical Union Transactions, v. 67, p. 1,189.

1987

Calzia, J.P., Frisken, J.G., Jachens, R.C., McMahan, A.B., and Rumsey, C.M., 1987, Mineral Resources of the Kingston Range Wilderness Study Area, San Bernardino County, California: U.S. Geological Survey Bulletin 1709-D, 21 p.

Nielson, J.E., Frisken, J.G., Jachens, R.C., and McDonnell, J.R., Jr., 1987, Mineral resources of the Fort Piute Wilderness Study Area, San Bernardino County, California: U.S. Geological Survey Bulletin 1713- C, 12 p.

1 5 Wilshire, H.G., Frisken, J.G., Jachens, R.C., Prose, D.V., Rumsey, C.M., and McMahan, A.B., 1987, Mineral resources of the Cinder Cones Wilderness Study Area, San Bernardino, California: U.S. Geological Survey Bulletin 1712-B, 13 p.

1989

DeWitt, Ed, Anderson, J.L., Barton, H.N., Jachens, R.C., Pcd-wysocki, M.H., Bricky, D.W., and Close, TJ., 1989, Mineral Resources of the South McCullough Mountains Wilderness Study Area, Clark County, Nevada: U.S. Geological Survey Bulletin 1730-C. Dohrenwend, J.C., Jachens, R.C., Blakely, R.J., Moring, Ei.C, and Menges, C.M., 1989, Geological and geophysical analysis of the subsurface geometry of basins in the central and western Great Basin: Implications for the analysis of concealed mineral resources in Nevada, in Fifth Annual V£. McKelvey Forum, Reno, Nevada, January 24-26, 1989: U.S. Geological Survey Circular 1035, p. 14.

Greene, R.C., Eppinger, R.G., Hassemer, J.R., Jachens, R.C.> Lawson, W.A., and Ryan, G.S., 1989, Mineral resources of the Wilderness Study Area, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-A, 18 p.

Greene, R.C., Turner, R.L., Jachens, R.C., Lawson, W.A., and Almquist, C.L., 1989, Mineral resources of the Wilderness Study Area, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737- B, 18 p.

Jachens, R.C., Blakely, R.J., and Moring, B.C., 1989, Analysis of concealed mineral resources in Nevada: constraints from gravity and magnetic studies, in Fifth Annual V.E. McKelvey Forum, Reno, Nevada, January 24-26, 1989: U.S. Geological Survey Circular 1(^35, p. 35-36.

1990

Blakely, R.J., and Jachens, R.C., 1990, Concealed mineral depos its of Nevada: Insights from three-dimensional analysis of gravity and magnetic anomalies: Geology and Ore Deposits of the Great Basin: Geological Society of Nevada, Program with Abstracts, p. 52-53. Blakely, R.J., Jachens, R.C., and Sherlock, M., 1990, Bulk mineable precious metal deposits and crustal structure: a statistical comparison, in Dean, D.A., BeneJetto, K.M.F., and Durgin, D.C., eds., Southern extension of the Carlin trend: influence of structure and stratigraphy on gold deposition: Geological Society of Nevada, p. 30-38.

Conrad, J.E., Hill, R.H., Jachens, R.C., and Neubert, J.T., 1990, Mineral resources of the Black Mountains North and Bums Spring Wilderness Study Areas, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-C, 22 p.

Dohrenwend, J.C., Jachens, R.C., Blakely, R.J., and Moring, B.C., 1990, Subsurface geometry and stratigraphy of basins in the western Great Basin: Impl ications for the analysis of concealed mineral resources in Nevada: Geology and Ore deposits of the; Great Basin: Geological Society of Nevada, Programs wilh Abstracts, p. 50.

Gray, Floyd, Jachens, R.C., Miller, R.J., Knepper, D.H., Pitkin, J.A., Keith, W.J., Mariano, John, and Korzeb, S.L., 1990, Mineral resources of the Warm Spiiings Wilderness Study Area, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-F, 53 p.

Jachens, R.C., and Moring, B.C., 1990, Maps of the thicknes of Cenozoic deposits and the isostatic residual gravity over basement for Nevada: U.S. Geological Survey Open-File Report 90-404, 15 p., 2 sheets, scale 1:1,000,000.

Morin, R.L, Mariano, John, and Jachens, R.C., 1990, Isoslalic residual gravity map of Edwards Air Force Base and vicinity, Kern, Los Angeles, and San Bernardino Cou ilies, California: U.S. Geological Survey Open- File Report 90-664, 1 sheet, scale 1:62,500.

1 6 1991

Blakely, R.J., and Jachens, R.C., 1991, Regional study of mineral resources in Nevada: Insights from three- dimensional analysis of gravity and magnetic

Jachens, R.C., and Morion, D.M., 1991, Geophysical studies in the Southern California Areal Mapping Project (SCAMP): Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A476.

PALEOMAGNETICS

Reports

1989

Wells, R.E., and Hillhouse, J.W., 1989, Paleoinagnetism and leclonic roialion of ihe lower Miocene Peach Springs Tuff: Colorado Plateau to Barsiow, California: Geological Sociely of America Bulletin, v. 101, p. 846-863.

1991

Hillhouse, J.W., and Wells, R.E., 1991, Magnetic fabric, flow directions, and source area of the lower Miocene Peach Springs Tuff in Arizona, California, and Nevada: Journal of Geophysical Research, v. 96, p. 12,443- 12,460.

Abstracts

1986

Hillhouse, J.W., and Wells, R.E., 1986, Assessment of rotations in the eastern Mojave Desert, California and Arizona, from paleomagnetism of the Peach Springs Tuff: EOS, American Geophysical Union Transaclions, v. 67, n. 44, p. 922.

Wells, R.E., and Hillhouse, J.W., 1986, Paleomagnelism of ihe Peach Springs Tuff and correlative outcrops from Barstow, California, to the Colorado Plateau: Geological Sociely of America Abstracts with Programs, v. 18, n. 5, p. 421.

1987

Wells, R.E., and Hillhouse, J.W., 1987, Tectonic rotations in the Peach Springs Tuff, Colorado River extensional corridor, California and Arizona: Geological Society of America Abstracts with Programs, v. 29, p. 886.

1989

Hillhouse, J.W., and Wells, R.E., 1989, Magnetic fabric and source area of the lower Miocene Peach Springs Tuff in California, Nevada, and Arizona: EOS, American Geophysical Union Transactions, v. 70, p. 1,067.

1 7 PETROLOGY AND ISOTOPE GEOLOGY

Reports

1986

Nealey, L.D., Ward, A.W., Bartel, A.J., Vivit, D.V., and Knight, R.J., 1986, Petrochemistry of the Mohon Mountains volcanic field, Arizona: U.S. Geological Survey Open-File Report 86-423, 31 p. i Wilshire, H.G., and Nielson-Pike, I.E., 1986, Upper-mantle jtenoliths in alkaline basalt, Dish Hill, California: Geological Society of America Guidebook, Southern California Field Trips, Mojave Desert Xenolith Suites, Malapai Hill and Dish Hill, p. 1-3.

1987

Haxel, G.B., Budahn, J.R., Fries, T.L., King, B.W., White, L.D., and Aruscavage, P.J., 1987, Geochemistry of the Orocopia Schist, southeastern California: Summary, in Dickinson, W.R., and Klute, M.A., eds., Mesozoic rocks of southern Arizona and adjacent areas: Arizona Geological Society Digest, v. 18, p. 49- 64.

1988

Wilshire, H.G., and Kirby, S.H., 1988, Dikes, joints, and faullts in the upper mantle: Tectonophysics, v. 161, p. 23-31.

Wilshire, H.G., Meyer, C.E., Nakata, J.K., Calk, L.C., Shervais, J.W., Nielson, I.E., and Schwarzman, E.G., 1988, Mafic and ultramafic xenoliths from volcanic rocks of the western United States: U.S. Geological Survey Professional Paper 1443, 179 p.

Wooden, J.L., Stacey, J.S., Howard, K.A., Doe, B.R., and Miller, D.M., 1988, Pb isotopic evidence for the formation of Proterozoic crust in the southwestern United States, in Ernst, W.G., ed., Metamorphism and crustal evolution of the western United States (Rubey Volume 7) Englewood Cliffs, N.J., Prentice-Hall, p. 69-86.

1989

Alien, C.M., 1989, Petrogenesis of the reversely zoned Turtle pluton, S.E. California [Ph.D. thesis]: Blacksburg, Virginia Polytechnic Institute and State University, 374 p.

Moyer, T.C., and Nealey, L.D., 1989, Regional compositional} variations of late Tertiary bimodal rhyolite lavas across the Basin and Range/Colorado Plateau boundary in western Arizona: Journal of Geophysical Research, v. 94, p. 7,799-7,816.

Nealey, L.D., and Sheridan, M.F., 1989, Post-Laramide volcanic rocks of Arizona and northern , Mexico, and their inclusions, in Jeimey, J.P., and Reynolds, S.J., 1989, Geologic evolution of Arizona: Tucson, Arizona Geological Society Digest 17, p. 609-647 1990

Barth, A.P., Tosdal, R.M., and Wooden, J.L., 1990, Petrolo<;ic comparison of Triassic plutonism in the San Gabriel and in southern California: Journal of Geophysical Research, v. 95, p. 20,075- 20,096.

Foster, D.A., Harrison, T.M., Miller, C.F., and Howard, K.A., 1990, The 40Ar/39Ar thermochronology of the eastern Mojave Desert, California, and adjacent Ari/ona with implications for the evolution of metamorphic core complexes: Journal of Geophysical Research, v. 95, p. 20,005-20,024.

1 8 Hammond, J.G., and Wooden, J.L., 1990, Isotopic constraints on the petrogenesis of Proterozoic diabase in the southwestern U.S.A., in Parker, A.J., Rickwood, P.C., and Tucker, D.H., editors, Mafic dykes and emplacement mechanisms: Proceedings of the Second International Dyke Conference, Adelaide, Australia, p. 145-156. Miller, C.F., Wooden, J.L., Bennett, V.C., Wright, I.E., Solomon, G.C., and Hurst, R.W., 1990, Petrogenesis of the composite peraluminous-metaluminous Old Woman-Piute Range batholith,- southeastem California: Isotopic constraints, in Anderson, J.L., ed., Nature and Origin of Cordilleran Magmatism: Geological Society of America Memoir 174, p. 99-110. Nakata, J.K., Pemokas, M.A., Howard, K.A., Nielson, I.E., and Shannon, J.R., 1990, K-Ar and fission-track ages (dates) of volcanic, intrusive, altered, and metamorphic rocks in the Mojave Mountains area, west- central Arizona: IsochronAVesL, n. 56, p. 8-20. Nielson, I.E., Lux, D.R., Dalrymple, G.B., and Glazner, A.F., 1990, Age of the Peach Springs Tuff, southeastern California and western Arizona: Journal of Geophysical Research, v. 95, p. 571-580. Wilshire, H.G., 1990, Lithology and evolution of the crust-mantle boundary region in the southwestern Basin and Range Province: Journal of Geophysical Research, v. 95, p. 649-665. Wooden, J.L., and Miller, D.M., 1990, Chronologic and isotopic framework for Early Proterozoic crustal evolution in the eastern Mojave Desert Region, SE California: Journal of Geophysical Research, v. 95, p. 20,133-20,146. 1991

Glazner, A.F., Farmer, G.L., Hughes, W.T., Wooden, J.L., and Pickthora, W., 1991, Contamination of basaltic magmas by mafic crust at Amboy and Pisgah Craters, Mojave Desert, California: Journal of Geophysical Research, v. 96, p. 13,673-13,691. Wilshire, H.G., McGuire, A.V., Noller, J.S., and Turrin, B.D., 1991, Petrology of lower crustal and upper mantle xenoliths from the Cima volcanic field, California: Journal of Petrology, v. 32, p. 169-200.

In Press

Anderson, J.L., Wooden, J.L., and Bender, E.E., in press, Early and Middle Proterozoic crustal evolution of the western transitional zones: California, Nevada, Arizona, in Chapter 4, Transcontinental Proterozoic Provinces: Geological Society of America DNAG Vol., Precambrian-Conterminous U.S.

Barth, A.P., Wooden, J.L., and May, D.J., in press, Small scale heterogeneities of Phanerozoic lower crust: Evidence from isotopic and geochemical systematics of mid-crustal granulite gneisses, San Gabriel Mountains, southern California: Contributions to Mineralogy and Petrology.

Nealey, L.D., and Unruh, D.M., in press, Geochemistry and isotopic characteristics of deep crustal xenoliths from Tule Tank, San Francisco field, northern Arizona: Arizona Geological Society.

Unruh, D.M., Nealey, L.D., and Holm, R.F., in press, The role of deep crust in the origin of upper Cenozoic volcanic rocks of northern Arizona-chemical and isotopic evidence from the Mormon Mountain volcanic field: Geology.

Young, E.D., Wooden, J.L., Shieh, Y-N, and Farber, D., in press, Geochemical evolution of Jurassic diorites from the Bristol Lake region, California, U.S.A., and the role of assimilation: Contributions to Mineralogy and Petrology.

1 9 Abstracts

1986 Alien, C.M., 1986, Liquidus phases in granite to quartz diorite-- a natural example from magma mixing: Geological Society of America Abstracts -with Programs, v. 18, p. 525. Alien, C.M., 1986, Rb-Sr pseudochron: the result of mixing in a reversely-zoned calcalkaline pluton, Turtle Mountains, S.E. California: Geological Society of America Abstracts with Programs, v. 18, p. 81. Elliott, G., Wooden, J.L., Miller, D.M., and Miller, R.J., 1986, Lower-granulite grade Early Proterozoic supracrustal rocks, New York Mountains, SE California: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 352. Haxel, G.B., Budahn, J.R., Fries, T.L., King, B.W., Taggart, I.E., and White, L.D., 1986, Protolith geochemistry of the Orocopia and Pelona Schist, southern California: Preliminary report: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 115. Nealey, L.D., 1986, Chemical characteristics of Tertiary vol zanic rocks in central and west-central Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 398. Nealey, L.D., Holm, R.F., and Conway, M.F., 1986, Petrology of the Mormon Mountain volcanic field, Coconino and Yavapai Counties, Arizona: Museum of Northern Arizona, Symposium on Southwestern Geology.

Nielson, I.E., 1986, Chemical relationships between mantle hornblendite, pyroxenite, and high-pressure megacrysts, Dish Hill, California: Geological Society of America Abstracts with Programs, v. 18, p. 164.

Shaw, S.E., Cooper, J.A., O'Neil, J.R., Todd, V.R., and Wooden, J.L., 1986, Strontium, oxygen, and lead isotopic variations across a segment of the Peninsular FLanges batholith, San Diego County, California: Geological Society of America Abstracts with Programs, v. 18, p. 183.

Sheridan, M.F., Nealey, L.D., and Dehn, J., 1986, Middle and Late Cenozoic volcanism in Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 412. Wilshire, H.G., and Noller, J.S., 1986, Mantle/crust xenoliths in hawaiite lavas: The Cima volcanic field, California: Fourth International Kimberlite Conference, Extended Abstracts, Geological Society of Australia, Abstracts, n. 16, pt. 4, p. 355-357. Wooden, J.L., Stacey, J.S., Howard, K.A., and Miller, D.M., 1986, Crustal evolution in southeastern California: Constraints from Pb isotopic evidence: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 200.

1987

Alien, C.M., 1987, Multiple sources of Cretaceous magmas southern Turtle Mountains, S.E. California: Geological Society of America Abstracts with Programs, v. 9, p. 569. Bouse, R.M., Wooden, J.L., Koski, R.A., and Pickthron, L.Q., 1987, Pb isotopic compositions for stratiform manganese deposits and their Miocene host rocks, Nevada and Arizona: Geological Society of America Abstracts with Programs, v. 19, p. 360.

Fryxell, J.E., Richard, S.M., Sutler, J.F., and Lucchitta, Ivo, 1987, Contrasting 40Ar/39Ar thermochronology of minerals from lower plate rocks of the Buckskin-Dullard -Eagle Eye detachment fault system, west-central Arizona: Geological Society of America Abstracts with 1Programs, v. 19, p. 670.

20 Howard, K.A., Nakata, J.K., Pcniokas, M.A., Marvin, R.F., and Miller, D.M., 1987, Mesozoic and Cenozoic beating, cooling, and uplift in SE California and adjacent Arizona: Evidence from K-Ar dating of crystalline rocks: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 708.

Kirby, S.C., Niclson, I.E., Nollcr, J.S., and Thompson, G.A., 1987, Geophysics and petrology of the deep crust and upper mantle: Workshop overview and summary, in Noller, J.S., Kirby, S.C., Nielson-Pike, I.E., and Thompson, G.A., Geophysics and Petrology of the Deep Crust and Upper Mantle, A Workshop sponsored by the US Geological Survey and Stanford University, Volume of Extended Abstracts: U.S. Geological Survey Circular 956, 88 p. Kozak, R.C., Nealey, L.D., and Knight, R.J., 1987, Geochemistry of late Tertiary volcanic rocks, Kirkland- Yarnell area, Arizona: Museum of Northern Arizona, Abstracts, Symposium on Southwestern Geology and Paleontology, p. 11. Moyer, T.C., and Nealey, L.D., 1987, Regional geochemical variations in Neogene bimodal rhyolites, west- central Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 780. Nealey, L.D., and Knight, R.J., 1987, Trace-element geochemistry of obsidian in the Mount Floyd volcanic field, Arizona-Archaeological implications: Museum of Northern Arizona, Abstracts, Symposium on Southwestern Geology and Paleontology, p. 7.

Nealey, L.D., Con way, C.M., and Thliveras, S., 1987, Trace element affinities of some Early Proterozoic suites in central Arizona: Journal of the Arizona-Nevada Academy of Science, v. 22, p. 48. Nielson, I.E., 1987, Evolution of the lower lithosphere near the CA-AZ crustal transect: Evidence from xenoliths: Geological Society of America Abstracts with Programs, v. 19, p. 789.

Nielson-Pike, I.E., 1987, Character of the lower lithosphere: Composition: U.S. Geological Survey Circular 956, p. 9-12,

Orell, S.E., Anderson, J.L., Wooden, J.L., and Wright, I.E., 1987, Proterozoic crustal evolution of the lower Colorado River region: Rear-arc orogenesis to anorogenic crustal remobilization: Geological Society of America Abstracts with Programs, v. 19, p. 795.

Wilshire, H.G., 1987, Multistage generation of alkalic basalt in the mantle: The Cima volcanic field, California: Geological Society of America Abstracts with Programs, v. 19, p. 892.

Wilshire, H.G., 1987, Character of the lower lilhosphere: Lithology, in Noller, J.S., Kirby, S.C., and Nielson, I.E., (eds.), Workshop: Geophysics and Petrology of the Deep Crust and Mantle: U.S. Geological Survey Circular 956, p. 6-8.

Wilshire, H.G., and Kirby, S.H., 1987, Brittle fracturing and related phenomena in the lower lithosphere: Geological Society of America Abstracts with Programs, v. 19, p. 464. Wooden, J.L., and Aleinikoff, J.N., 1987, Pb isotopic evidence for Early Proterozoic crustal evolution in the southwestern U.S.: Geological Society of America Abstracts with Programs, v. 19, p. 896.

Wooden, J.L., and Stacey, J.S., 1987, Lead isotopic constraints on the origin of Cordilleran granitic magmatism: Geological Society of America Abstracts with Programs, v. 19, p. 465. Wright, I.E., Howard, K.A., and Anderson, J.L., 1987, Isotopic systematics of zircons from Late Cretaceous intrusive rocks, southeastern California: Implications for a vertically stratified crustal column: Geological Society of America Abstracts with programs, v. 19, n. 7, p. 898.

21 1988

Earth, A.P., Tosdal, R.M., and Wooden, J.L., 1988, Characteristics and implications of Triassic and Jurassic granitoids in the San Gabriel, Mule, and , southern California and southwestern Arizona: Geological Society of America Abstracts with Programs^ v. 20, n. 3, p. 141. Bender, E.E., Anderson, J.L., Wooden, J.L., Howard, K.A and Miller, C.F., 1988, Correlation of 1.7 Ga granitoid plutonism in the lower Colorado River region: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 142. I

Fletcher, J.M., Karlstrom, K.E., Ring, T.E., Wooden, J.L., ahd Foster, D.A., 1988, Tectonic style and timing of deep-seated Mesozoic crustal shortening: Piute Mountains, eastern Mojave Desert Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A272. Foster, D.A., Harrison, T.M., Miller, C.F., Howard, K.A., and John, B.E., 1988, Mesozoic and Cenozoic thermal history of the eastern Mojave Desert, California: Insights from ^"Ar/^^Ar geochronology: Geological Society of America Abstracts with Programs,[ v. 20, n. 7, p. A71.

Gleason, J.D., Miller, C.F., and Wooden, J.L., 1988, Barrelel Spring alkalic complex: 1.4 Ga anorogenic plutonism in the Old Woman-Piute Range, eastern Mcjave Desert, California: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 164.

Hoisch, T.D., and Hamilton, W.B., 1988, Latest Cretaceous crustal metamorphism in southeastern California by fluids from subducted schist: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 169. Miller, D.M., and Wooden, J.L., 1988, An Early Proterozjoic batholithic belt in the northern New York Mountains area, California and Nevada: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 215-216. ;

Unruh, D.M., Nealey, L.D., and Holm, R.F., 1988, Trace-element and isotopic constraints on the origin of the Mormon Mountain volcanic field, central Arizona: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 238.

Wilshire, H.G, 1988, Remelting of igneous and meta-ignequs rocks in the upper mantle: EOS, American Geophysical Union Transactions, v. 69, p. 1,049. !

Wilshire, H.G., 1988, Enrichment of lithospheric mantle in western United States extensional terranes: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A366. Wooden, J.L., Miller, D.M., and Howard, K.A., 1988, Earl}' Proterozoic chronology of the eastern Mojave Desert: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 243.

Wooden, J.L., Stacey, S.S., Robinson, A.C., Kisller, R.A., Tosdal, R.M., and Whitehouse, M.J., 1988, Pb isotope characteristics of Mesozoic intrusive magmatism along the craton margin in the western U.S.: Bulte, Montana, 8th International Conference on Basement Tectonics, p. 35. Young, E.D., and Wooden, J.L., 1988, Mid-crustal emplacement of Mesozoic granitoids, eastern Mojave Desert: evidence from crystallization barometry: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 244.

1989

Anderson, J.L., Wooden, J.L., and Bender, E.E., 1989, Early and Middle Proterozoic crustal evolution of the south western U.S.: Geological Society of America Abstracts< with Programs, v. 21, n. 6, p. A23.

22 Farber, D.L., Davis, M.S., Johnson, K.A., Young, E.D., Wooden, J.L., and Tosdal, R.M., 1989, Late Jurassic bimodal alkalic plutonism and magma mixing in the Mojave Desert region, southeast California: Geological Society of America Abstracts with Programs, v. 21, n. 6, p. A325-326. Young, E.D., and Wooden, J.L., 1989, Geochemical evolution of a middle crustal mafic plutonic complex, southeastern California: EOS, American Geophysical Union Transactions, v. 70, p. 504.

1990

Alien, C.M., Foster, D.A., and Wooden, J.L., 1990, Sources of plutons and P-T-t path of southern Turtle Mountains, S.E. California: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 1.

Anderson, J.L., Barth, A.P., Bender, E.E., Davis, M.J., Farber, D.F., Hayes, E.M., Johnson, D.A., Young, E.D., Wooden, J.L., and Tosdal, R.M., 1990, San Gabriel (Tujunga) terrane - Coming home to Mojave: Geological Society of America Abstracts with Programs, v. 22, n. 7, p. A303. Barth, A.P., Wooden, J.L., and May, D.J., 1990, Geochemistry of Cretaceous gneisses, SE San Gabriel Mountains, southern California: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 5. Bouse, R.M., Ruiz, J., Titley, S.R., Lang, J.R., and Wooden, J.L., 1990, Common Pb isotopic evidence from Laramide plutons and Phanerozoic mineralization in Arizona for the inheritance of isotopic and metal ratios from Proterozoic basement: EOS, American Geophysical Union Transactions, v. 71, p. 1,681, Fanner, G.L., Glazner, A.F., Hughes, W.T., Wooden, J.L., and Pickthorn, W., 1990, Mixing of basaltic magma with mafic crust at Amboy and Pisgali craters, Mojave Desert, California: EOS, American Geophysical Union Transactions, v. 71, p. 1,682. Hammond, J.G., and Wooden, J.L., 1990, Pb isotopic constraints on the origin of Proterozoic diabases of California and Arizona: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 28. Hoisch, T.D., and Hamilton, W.B., 1990, Granite generation of fluid-induced anatexis: EOS, American Geophysical Union Transactions, v. 71, p. 694-696.

Murphy, G.P., Tosdal, R.M., Wooden, J.L., Kent, J., Vaughn, R.B., and Hayes, E.M., 1990, Chemical and isotopic character of Jurassic granitoids, Cargo Muchcacho Mountains, SE California: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 71.

Nealey, L.D., Unruh, D.M., Knight, R.J., and King, B.W., 1990, Geochemistry of deep crustal xenoliths from the southern Colorado Plateau, northern Arizona: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 72.

Wooden, J.L., and Tosdal, R.M., 1990, Common Pb isotopic evidence for sources of Mesozoic and Tertiary magmatism in SE California and SW Arizona: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 95.

Wooden, J.L., Bennett, V.C., Hanchar, J.M., and Miller, C.F., 1990, Lower crustal xenoliths in Tertiary dikes, Old Woman Mountains area, SE California: II. Pb, Nd, and Sr isotopic data: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 95.

1991

Anderson, J.L., Young, E.D., Barlh, A.P., Wooden, J.L., Tosdal, R.M., and Morrison, Jean, 1991, Mesozoic batholiths of the Mojave: Geological Society of America Abstracts with Programs, v. 23, n. 2, p. 3.

Barth, A.P., Gin/el, B.M., Wooden, J.L., and Tosdal, R.M., 1991, U-Pb zircon geochronology and geochemistry of Mendcnhall gneiss, western San Gabriel Mountains, southern California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A453.

23 Bender, E.E., Anderson, J.L., and Wooden, J.L., 1991, Temporal variations in the chemistry of Early Proterozoic plutons from the southwest United States: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A57. Farmer, G.L., Wilshire, H.G., Wooden, J.L., Glazner, A.F., iind Katz, M., 1991, Temporal variations in the sources of alkali basa-hs at the Cima volcanic field, S California: Geological Society of America Abstracts with Programs, v. 23, n. 2, p. 23.

Gerber, M.E., Miller, C.F., Wooden, J.L., and Foster, D.A., 1991, Plutonism at the eastern edge of the Cordilleran Jurassic magmatic belt, Mojave Desert, California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A249. Miller, C.F., Hanchar, J.M., Harrison, T.M., Wark, D.A., Wooden, J.L., and Bennett, V.C., 1991, The granite-source connection: Narrowing the gap through [study of lower crustal xenoliths and accessory minerals: EOS, American Geophysical Union Transactions, v. 72, p. 302.

Wilshire, H.G., and Nielson, I.E., 1991, Differentiation of basaltic intrusions in the mantle: Geological Society of America Abstracts with Programs, v. 23, n. 5, :>. A272.

Wooden, J.L., and Miller, D.M., 1991, Early Proterozoic geologic history of the Mojave crustal province: Geological Society of America Abstracts with Programs, v. 23, n. 4, p. 108.

Wooden, J.L., and Aleinikoff, J.N., 1991, Early Proterozoi isotopic provinces in the southwestern U.S.: Geological Society of America Abstracts with Programs, /. 23, n. 4, p. 107.

Wooden, J.L., Kistler, R.W., Robinson, A.C., Tosdal, R.l, and Wright, J.E., 1991, A comparison of isotopic signatures and Mesozoic and Tertiary plutonism ift the western U.S.: EOS, American Geophysical Union Transactions, v. 72, n. 17, p, 302. Wooden, J.L., Powell, R.E., Howard, K.A., and Tosdal, R.M., 1991, Eagle Mountains 30'x60' quadrangle southern California: II. Isotopic and chronologic studies: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A478. Young, E.D., Farber, Daniel, Wooden, J.L., and Tosdal, R.M., 1991, Partial melting of subcontinental lithosphere as evidence for Jurassic intra-arc crustal extension, SE California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A250.

1992

Hammarstrom, J.M., 1992, Mineral chemistry of Cretaceous plutons: Hornblende geobarometry in southern California and southeastern Alaska: Geological Society c f America Abstracts with Programs, v. 24, n. 5, p. 30.

PACE-related Reports and Abstracts

1985

Haxel, G.B., Briskey, J.A., May, D.J., Tosdal, R.M., and Wright, J.E., 1985, Reconnaissance petrochemistry of Jurassic igneous rocks, Baboquivari and Comobabi Mountains area, southern Arizona: Geological Society of America Abstracts with Programs, v. 17, p. 361

24 1986

Nielson, I.E., 1986, Mantle magmatic events indicated by zoned olivine and pyroxene compositional variations in a composite mantle xenolith from Lashaine Volcano, Tanzania: 4th International Kimberlite Conference, Extended abstracts volume, p. 297-289. Noller J.S., 1986, Solid and fluid inclusions in mantle xenoliths: An analytical dilemma: Geology, v. 14, p. 437-440.

1987

Haxel, G.B., 1987, Trace-element systematics of peraluminous leucogranites, Baboquivari Mountains chain, south-central Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 6, p. 388. Mukasa, S.B., Shervais, J.W., Wilshire, H.G., and Nielson, I.E., 1987, Isotopic variations in the upper mantle: The Lherz alpine peridotite massif as an example: EOS, American Geophysical Union Transactions, v. 68, p. 1,552. Nielson, I.E., and Noller, J.S., 1987, Processes of mantle metasomatism, in Morris, E.M., and Pasteris, J.D., eds., Mantle Metasomatism and alkaline magmatism: Geological Society of America Special Paper 215, p. 61-76.

Nielson, I.E., Budahn, J.R., and Wilshire, H.G., 1987, Fluid-wallrock interactions in the mantle: Evidence from composite Iherzolite-hornblendite xenoliths, U.S. Geological Survey Circular 956, p. 86-88. Wilshire, H.G., 1987, A model of mantle metasomatism, in Morris, E.M. and Pasteris, J.D. (eds.), Mantle Metasomatism and Alkaline Magmatism: Geological Society of America Special Paper 215, p. 47-60.

1988

Ridley, W.I., Nielson, I.E., and Wilshire, H.G., 1988, Understanding lunar mantle metasomatism: The terrestrial mantle analogy: Workshop on Moon in transition: Apollo 14, KREEP, and evolved lunar rocks: Lunar and Planetary Institute, Nov. 14-16, 1988, Houston, Texas, p. 69-70.

1989

Haxel, G.B., 1989, Geochemistry of peraluminous leucogranites, south-central Arizona, in Continental magmatism abstracts, International Association of Volcanology and Chemistry of the Earth's Interior, General Assembly, Santa Fe: Bureau of Mines and Mineral Resources Bulletin 131, p. 124.

Nielson, I.E., 1989, Nature and sequence of mantle magmatic events indicated by compositional variations in a composite xenolith from Lashaine Volcano, Tanzania, in Ross, J., Jaques, A.L., Ferguson, J., Green, D.H., O'Reilly, S.Y., Danchin, R.V., and Janse, A.J.A., eds., Kimberlite and Related Rocks, v. 2, Geological Society of Australia Special Publication 14, p. 700-708.

1990

Mukasa, S.B., Shervais, J.W., Wilshire, H.G., and Nielson, J.E., 1990, Upper mantle Nd-Pb- and Sr-isotopic heterogeneities exhibited by alpine peridotite massifs at Lherz and Balmuccia: International Workshop on Orogenic Lherzolites and Mantle Processes. Nielson, J.E., Wilshire, H.G., Meyer, C., Shervais, J., and Mukasa, S., 1990, Fractionated dikes, Lherz massif, southern France: International Workshop on Orogenic Lherzolites and Mantle Processes.

25 1991

Alien, C.M., 1991, Local equilibrium of mafic enclaves anJ granitoids of the Turtle pluton, S.E. California: mineral chemical and isotopic evidence: American Mineralogist, v. 76, p. 574-588. McGuire, A.V., Dyar, D., and Nielson, I.E., 1991, Metasomatic oxidation of upper mantle peridotite, Contributions to Mineralogy and Petrology, v. 109, p. 252-264.

In Press

Mukasa, S.B., Wilshire, H.G., Nielson, J.E., and Shervais, J.W., in press, Intrinsic Nd, Pb and Sr isotopic heterogeneities exhibited by the Lherz alpine peridotite massif, French Pyrenees: Journal of Petrology.

GEOLOGY

Reports

1985 !

Haxel, G.B., Tosdal, R.M., and Dillon, J.T., 1985, Tectonic setting and lithology of the Winterhaven Formation, a new Mesozoic stratigraphic unit in southeasternmost California and southwestern Arizona: U.S. Geological Survey Bulletin 1599, 19 p.

1986

Conway, C.M., 1986, Field guide to Early Proterozoic strata that host massive sulfide deposits at Bagdad, Arizona, in Nations, J.D., Conway, C.M., and Swann, G.A., eds., Geology of central and northern Arizona, Geological Society ol" America, Rocky Mountain Section, field trip guidebook: Flagstaff, Arizona, Northern Arizona University, p. 140-157. Conway, C.M., and Karlstrom, K.E., 1986, Early Proterozoic ~A workshop report: EOS, American Geophysical Union Transactions, v. 67, n. 37, b. 681-682.

Conway, C.M., and Wrucke, C.T., 1986, Proterozoic geology of the -Tonto Basin- area, road log and field guide: Arizona Geolo ical Society Digest, v. 16, p. 227-247.

Conway, C.M., Connelly, T.J., and Robison, L.C., 1986, An Early Proterozoic volcanic-hydrothennal- exhalative system at Bagdad, Arizona: Arizona Geological Society Digest, v. 16, p. 24-34. Glazner, A.F., Nielson, J.E., Howard, K.A., and Miller, D.Mk, 1986, Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California and yUizona, in Guidebook and Volume Trips 5 and 6- -Cenozoic stratigraphy, structure, and mineralization in the Mojave Desert, Geological Society of America Cordilleran Section 82nd Annual Meeting, Los Angeles, CA, March 25-28, 1986, p. 65-68. Glazner, A.F., Nielson, J.E., Howard, K.A., and Miller, D.M 1986, Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California and Arizona: Geology, v. 14, n. 10, p. 840-843.

Gusa, Sharon, 1986, Recognition of the Peach Springs Tuff, California and Arizona, using heavy-mineral suites: U.S. Geological Survey Open-File Report 86-522, 11 p. Haxel, G.B., and Tosdal, R.M., 1986, Significance of the Orocopia Schist and Chocolate Mountains thrust in the late Mesozoic tectonic evolution of the southeastern Gilifomia[-southwestern Arizona region: Extended abstract, in Beatty, Barbara, and Wilkinson, P.A.K., eds., Frontiers in geology and ore deposits of Arizona and the Southwest: Arizona Geological Society Digest 16 , p. 52-61.

26 Haxel, G.B., Tosdal, R.M., and Oillon, J.T., 1986,1;ield guide to the Chocolate Mountains thrust and Orocopia Schist, Gavilan Wash area, southeasternmost California, in Cenozoic stratigraphy, structure, and mineralization in the Mojave Desert, Guidebook and Volume, Trips 5 and 6, Geological Society of America, Cordilleran Section, Los Angeles, p. 127-138. Karlstrom, K.E., and Conway, C.M., 1986, Defonnational styles and contrasting lithostratigraphic sequences within an Early Proterozoic orogenic belt, central Arizona, in Nations, J.D., Conway, C.N., and Swann, G.A., eds., Geology of central and northern Arizona, Geological Society of America, Rocky Mountain Section, Field trip guidebook: Ragstaff: Northern Arizona University, p. 1-25. Karlstrom, K.E., and Conway, C.M., 1986, Symposium report: Early Proterozoic geology of Arizona: Geology, vol. 14, p. 625-626.

Lucchitta, Ivo, and Young, R.A., 1986, Structure and geomorphic character of western Colorado Plateau in the Grand Canyon-Lake Mead region, in Nations, J.D., Conway, C.M., and Swann, G.A., eds., 1986, Geology of Central and Northern Arizona: Geological Society of America, Roeky Mountain Section, Field Trip Guidebook, p. 159-176.

Lucchitta, Ivo, 1986, Heat and detachment in core-complex extension-Paper presented to the Conference on Heat and Detachment in Crustal Extension on Continents and Planets, Sedona, Arizona, October 10-12, 1985: Lunar and Planetary Institute, p. 64-68.

Nations, J.D., Conway, C.M., and Swann, G.A., eds., 1986, Geology of central and northern Arizona, Geological Society of America, Rocky Mountain Section, Field trip guidebook: Northern Arizona University, Flagstaff. Nielson, I.E., and Turner, R.D., 1986, Miocene rocks of the northern Turtle Mountains, San Bernardino County, California, in Cenozoic stratigraphy, structure and mineralization in the Mojave Desert: Geological Society of America, Cordilleran Section, 82nd Ann. Mtg., Los Angeles, CA, March 25-28, 1986, Guidebook and Volume, Field Trip numbers 5 and 6, p. 25-32. Nielson, I.E., 1986, Miocene stratigraphy of the Mojave Mountains, Arizona, and correlation with adjacent ranges, in Cenozoic stratigraphy, structure and mineralization in the Mojave Desert: Geological Society of America, Cordilleran Section, 82nd Ann. Mtg., Los Angeles, CA, March 25-28, 1986, Guidebook and Volume, Field Trip numbers 5 and 6, p. 15-24.

Stewart, J.H., Anderson, T.H., Haxel, G.B., Silver, L.T., and Wright, J.E., 1986, Late Triassic paleogeography of the southern Cordillera: The problem of a source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region: Geology, v. 14, p. 566-570.

Tosdal, R.M., 1986, Gneissic host rocks of gold mineralization in the Picacho Mine, southeastern Chocolate Mountains, southeastern California, in Cenozoic stratigraphy, structure, and mineralization in the Mojave Desert: Geological Society of America Cordilleran Section, 82nd Annual Mtg., Los Angeles, CA, March 25-28, 1986, Guidebook and volume, Trips 5 and 6, p. 143-144. Tosdal, R.M., 1986, Mesozoic ductile deformations in the southern , northern Trigo Mountains, Trigo Peaks, and Livingston Hills, south western Arizona, and Mule Mountains, southeastern California, in Beatty, Barbara, and Wilkinson, Pamela, eds., Frontiers in geology and ore deposits of Arizona and the Southwest: Arizona Geological Society Digest 16, p. 62-71.

Weir, G.W., Ulrich, G.E., and Nealey, L.D., 1986, Preliminary geologic map of the Sedona 30 x 60' quadrangle, Yavapai and Coconino Counties, Arizona: U.S. Geological Survey Open-File Report 86-164, scale 1:100,000.

Weir, G.W., Ulrich, G.E., and Nealey, L.D., 1986, Geologic map of the Sedona 30- x 60-minute quadrangle, Yavapai and Coconino Counties, Arizona: U.S. Geological Survey Miscellaneous Investigations Map I- 1896, scale 1:100,00.

27 1987

Conway, C.M., Karlstrom, K.E., Wrucke, C.T., and Silver L.T., 1987, Tectonic and magmatic contrasts across a two-province boundary in central Arizona, in Davis , G.H., and VandenDolder, E.M., eds., Geologic diversity of Arizona and its margins: Excursions to choice areas Arizona Bureau of Geology and Mineral Technology Special Paper 5, p. 158-175. Fitzgibbon, T.T., 1987, Technical Manual and Program Listing for REFORM: A rock-sample database program in FORTRAN-77: U.S. Geological Survey Open-File Report 87-141B, 81 p. Fitzgibbon, T.T., 1987, User's manual for REFORM: A reek-sample database program in FORTRAN-77: U.S. Geological Survey Open-File Report 87-141-A, 67 p. Frost, E.G., Okaya, D.A., McEvilly, T.V., Mauser, E.G., Galvan, G.S., McCarthy, L, Fuis, G.S., Conway, C.M., Blom, R.G., and Heidrick, T.L., 1987, Crustal transect Colorado Plateau-detachment terrane-Salton Trough, in Davis, G.H., and VandenDolder, E.M., eds.,j Geologic diversity of Arizona and its margins: Excursions to choice areas: Arizona Bureau of Geology &nd Mineral Technology Special Paper 5, p. 398- 422. I

Gusa, Sharon, Nielson, I.E., and Howard, K.A., 1987, Heavy -mineral suites confirm wide distribution of the Peach Springs Tuff, California and Arizona, USA: Journal of Volcanology and Geothermal Research, v. 33, p. 343-347.

Hamilton, W.B., 1987, Crustal extension in the Basin and Range province, southwestern United States, in Coward, M.P., Dewey, J.F., and Hancock, P.L., eds., Continental extensional tectonics: Geological Society of London Special Publication No. 28, p. 155-176.

Hamilton, W.B., 1987, Mesozoic geology and tectonics of the region, southeastern California: Arizona Geological Society Digest 18, p. 33-47. Hamilton, W.B., Tosdal, R.M., Stone, Paul, and Haxel, G.B., 1987, Mesozoic tectonics of southeastern California, in Davis, G.H., and VandenDolder, E.M., edsL, Geologic diversity of Arizona and its margins: Excursions to choice areas: Arizona Bureau of Geology 4nd Mineral Technology, Special Paper 5, p. 337- 350.

Hauser, E.G., Gephart, J., Latham, T., Oliver, J., Kaufman, S., Brown, L., and Lucchitta, Ivo, 1987, COCORP Arizona transect: strong crustal reflections and offset Moho beneath the Transition Zone: Geology, v. 15, p. 1,103-1,106.

Howard, K.A., John, B.E., and Miller, C.F., 1987, Metamorphic core complexes, Mesozoic ductile thrusts, and Cenozoic detachments: Old Woman Mountains - Chemet uevi Mountains transect, California and Arizona, in Davis, G.H., and Vandendolder, E.M., eds., Geologic diversity of Arizona and its margins: Excursions to choice areas: Arizona Bureau of Geology and Mineral Technology Special Paper 5, p. 365-382. Howard, K.A., and John, B.E., 1987, Crustal extension along a rooted system of imbricate low-angle faults: Colorado River extensional corridor, California and Arizona, in Coward, M.P., Dewey, J.F., and Hancock, P.L., eds, Continental extensional tectonics: Geological ociety of London Special Publication No. 28. p. 299-311.

John, B.E., 1987, Geologic map of the Chemehuevi Mountai is area, San Beraardino County, California, and Mohave County, Ari/ona: U.S. Geological Survey Open-File Report 87-666, scale 1:24,000.

John, B.E., 1987, Geometry and evolution of a mid-crustal extensional fault system: Chemehuevi Mountains, southeastern California, in Coward, M.P., Dewey, J.F., jind Hancock, P.L., eds, Continental extensional tectonics: Geological Society of London Special Paper. 23, p. 313-335. Karlstrom, K.E., Bowring, S.A.,.and Conway, C.M., 1987, Tectonic significance of an Early Proterozoic two- province boundary in central Ari/ona: Geological Society! of America Bulletin, v. 99, p. 529-538.

28 Lucchitta, Ivo, 1987, The inoulh of the Grand Canyon and edge of the Colorado Plateau in the upper Lake Mead area: Geological Society of America Centennial Field Guide-Rocky Mountain Section, p. 365-370. Mittiwede, S.K., Glazner, A.F., Nielson, J.E., Howard, K.A., and Miller, D.M., 1987, Comment and reply on "Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California and Arizona": Geology, v. 15, p. 375.

Nealey, L.D., Ward, A.W., Bartel, A.J., Vivit, D.V., and Knight, R.J., 1987, Petrochemistry of rocks from the Mohon Mountain volcanic field, Yavapai and Mohave Counties, Arizona: U.S. Geological Survey Open- file report 86-423, 20 p.

Sherrod, D.R., and Koch, R.D., 1987, Structure and stratigraphy of Mesozoic sedimentary and volcanic rocks in the , southwestern Arizona, in Dickinson, W.R. and Klute, M.A., eds., Mesozoic rocks of southern Arizona and adjacent parts: Arizona Geological Society Digest, v. 18, p. 81-90. Stone, Paul, 1987, Mesozoic tectonics of southeastern California, Day 2, morning: McCoy Mountains Formation, McCoy Mountains, in Davis, G.H., and VandenDolder, E.M., eds., Geologic diversity of Arizona and its margins: Excursions to choice areas: Arizona Bureau of Geology and Mineral Technology Special Paper 5, p. 342-344.

Stone, Paul, Page, V.M., Hamilton, W.B., and Howard, K.A., 1987, Cretaceous age of the upper part of the McCoy Mountains Formation, southeastern California and southwestern Arizona and its tectonic significance: Reconciliation of paleobotanical and paleomagnetic evidence: Geology, v. 15, p. 561-564.

1988

Billingsley, G.H., Conway, C.M., and Beard, L.S., 1988, Geologic map of the Prescott 30 by 60 minute quadrangle: U.S. Geological Survey Open-File Report 88-372, scale 1:100,000. Howard, K.A., and Alien, C.M., 1988, Geologic map of the southern part of the Dale Lake 15-minute quadrangle, San Bernardino and Riverside counties, California: U.S. Geological Survey Open-File Report 88-538 (with pamphlet), scale 1:62,500. John, B.E., 1988, Structural reconstruction and zonation of a tilted mid-crustal magma chamber: the felsic Chemehuevi Mountains plulonic suite: Geology, v. 16, p. 613-617.

Lucchitta, Ivo, and Suneson, N.H., 1988, Geologic Map of the Artillery Peak NW quadrangle, Mojave County, Arizona: U.S. Geological Survey Open-file Map 85-277, scale 1:24,000.

Lucchitta, Ivo, and Suneson, N.H., 1988, Geologic Map of the Planet 2 SW Quadrangle, Mojave County, Arizona: U.S. Geological Survey Open-file Map 88-547, scale 1:24,000.

Miller, J.M.G., and John, B.E., 1988, Detached strata in a Tertiary low-angle normal fault terrane, southeastern California: A sedimentary record of unroofing, breaching and continued slip: Geology, v. 16, p. 645-648. Reynolds, S.J., Richard, S.M., Haxel, G.B., Tosdal, R.M., and Laubach, S.E., 1988, Geologic setting of Mesozoic and Cenozoic metamorphism in Arizona, in Ernst, W.(j., ed., Metamorphism and crustal evolution of the western United States (Rubcy Volume 7): Englewood Cliffs, N.J., Prentice-Hall, p. 466- 501.

Sherrod, D.R., 1988, Preliminary geologic map of the Monkeys Head quadrangle, Mojave and La Paz Counties, Arizona: U.S. Geological Survey Open-File Report 88-597 (with pamphlet), scale 1:24,000.

Stone, Paul, and Kelly, M.M., 1988, Preliminary geologic map of the Palen Pass quadrangle, Riverside County, California: U.S. Geological Survey Open-File Report 88-503, scale 1:24,000.

29 Wilshire, H.G., 1988, Geology of the Cima volcanic field, San Bernardino County, California: Geological Society of America Field Trip Guidebook, This Extended Land: Geological Journeys in the Southern Basin and Range, p. 210-213. 1989

Bryant, Bruce, and Wooden, J.L., 1989, Lower plate rocks of the Buckskin Mountains, Arizona-A progress report, in Spencer, I.E., and Reynolds, S.J., eds., Geology of the Buckskin Mountains west-central Arizona: Arizona Geological Survey Bulletin 198, p. 47L50, 1 fig. Conway, C.M., and Silver, L.T., 1989, Early Proterozoic tacks (1710-1615-Ma) in central to southeastern Arizona, in Jenny, J.P., and Reynolds, S.J., eds., Geo|ogic evolution of Arizona: Arizona Geological Society Digest 17, p. 165-186. Horringa, E.D., 1989, Rocks and structural evolution of the northern Kilbeck Hills, San Bernardino County, California [M.S. thesis]: San Jose, California, San Jose State University, 180 p.

Howard, K.A., Horringa, E.D., Miller, D.M., and Stone, Paijl, 1989, Geologic map of the eastern parts of the Cadiz Lake and Cadiz Valley 15-minute quadrangles, San Bernardino and Riverside Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2086, scale 1:62,500. Howard, K.A., Stone, Paul, and Miller, C.F., 1989, Geologic map of the Milligan 15-minute quadrangle, San Bernardino County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2072, scale 1:62,500.

Lucchitta, Ivo, 1989, Overflight of the tectonic boundary between the Colorado Plateau and the Basin and Range provinces: American Geophysical Union Field Trip Guidebook Til6/389 for 28th International Geological Congress, 21 pp.

Stone, Paul, and Pelka, G.J., 1989, Geologic map of the Pa en -McCoy Wilderness Study Area and vicinity, Riverside County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2092, scale 1:62,500. Tosdal, R.M., Haxel, G.B., and Wriglu, J.E., 1989, Jurassic geology of the region, southern Arizona, southeastern California, and northernmost Sonora: Construction of a continental-margin magmatic arc, in Jenney, J.P. and Reynolds, S.J., eds., Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 397-434.

Ulrich, G.E., Condit, C.D., Wenricli, K.J., Wolfe, E.W., Hoim, R.F., Nealey, L.D., Conway, F.M., Aubele, J.C., and Grumpier, L.S., 1989, Miocene to Holocene volcanism and tectonism of the southern Colorado Plateau, Arizona: New Mexico Bureau of Mines and Mineral Resources Memoir 46, p. 1-41.

1990

Beratan, K.K., Blom, R.G., Nielson, J.E., and Crippen, R E., 1990, Use of Landsat thematic images in regional correlation of syntectonic strata, Colorado River extensional corridor, California and Arizona: Journal of Geophysical Research, v. 95, p. 615-624. Dillon, J.D., Haxel, G.B., and Tosdal, R.M., 1990, Structural evidence for northeastward movement on the Chocolate Mountains thrust, souiheasiemmost California: Journal of Geophysical Research, v. 95, p. 19,953-19,971.

Howard, K.A., Nielson, J.E., Wilshire, H.G., Nakaia, J.K., Goodge, J.W., Reneau, S.L., John, B.E., and Hansen, V.L., 1990, Preliminary geologic map of the Mojave Mountains area, Mojave County, western Arizona: U.S. Geological Survey Open-file report 90-684 scale 1:48,000. John, B.E., and Mukasa, S.B., 1990, Footwall rocks to the mid-Tertiary Chemehuevi detachment fault: window into the Late Cretaceous middle crust: Journal of Geophysical Research, vol. 95, p. 463-485.

30 John, B.E., and Wooden, J.L., 1990, Petrology and geochemistry of the metaluminous to peraluminous Chemehuevi Mountains plutonic suite, southeastern California, in Anderson, J.L., ed., The Nature and Origin of Cordilleran Magmatism, Geological Society of America Memoir 174, pages 71-98. Lucchitta, Ivo, and Suneson, N.H., 1990, Geologic Map of the Planet 2 NW quadrangle, Mojave County, Arizona: U.S. Geological Survey Open-File report"89-673, scale 1:24,000.

Lucchitta, Ivo, 1990, Role of heat and detachment in continental extension as viewed from the eastern Basin and Range Province in Arizona in Lucchitta, Ivo, and Morgan, Paul, eds., Heat and detachment in continental extension: Tectonophysics, v. 174, p. 77-114. Nielson, I.E., and Beratan, K.K., 1990, Tertiary basin development and tectonic implications, Whipple detachment system, Colorado River extensional corridor, California and Arizona: Journal of Geophysical Research, v. 95, p. 599-614.

Sherrod, D.R., Koch, R.D., and Grubensky, M.J., 1990, Geologic map of the Vicksburg quadrangle, La Paz County, Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ-1684, scale 1:62,500.

Sherrod, D.R., Smith, D.B., Kleinkopf, M.D., and Gese, D.D., 1990, Mineral resources of the Kofa Unit 4 Northern Addition Wilderness Study Area (AZ-050-033), Yuma County, Arizona: U.S. Geological Survey Bulletin 1702-K, 12 p. Stone, Paul, 1990, Preliminary geologic map of the Blyihe 30' by 60' quadrangle, California and Arizona: U.S. Geological Survey Open-File Report 90-497, scale 1:100,000. Tosdal, R.M., 1990, Tectonics of the Mule Mountains thrust system southeast California and southwest Arizona: Journal of Geophysical Research, v. 95, p. 20,035-20,048. Tosdal, R.M., Haxel, G.B., Anderson, T.H., Connors, C.D., May, D.J., and Wright, J.E., 1990, Highlights of Jurassic, Late Cretaceous to early Tertiary, and middle Tertiary tectonics, south-central Arizona and north- central Sonora, in Gehrels, G.E., and Spencer, I.E., eds., Geologic excursions through the Sonoran Desert region, Arizona and Sonora: Arizona Geological Survey Special Paper 7, p. 76-88.

Ward, A.W., and Nealey, L.D., 1990, Preliminary Geologic map of the Pilot Knob Quadrangle, Yavapai and Mojave Counties, Arizona: USGS Open-file report 90-26; scale 1:24,000.

Ward, A.W., and Nealey, L.D., 1990, Preliminary Geologic map of the Burro Mesa Quadrangle, Yavapai County, Arizona: USGS Open-file report 90-212; scale 1:24,000. 1991

Bryant, Bruce, Naeser, C.W., and Fryxell, I.E., 1991, Implications of low-temperature cooling history on a transect across the Colorado Plateau-Basin and Range Boundary, west central Arizona: Journal of Geophysical Research, v. 96, p. 12,375-12,388.

Howard, K.A., 1991, Intrusion of horizontal dikes: Tectonic significance of Middle Proterozoic diabase sheets widespread in the upper crust of the southwestern United States: Journal of Geophysical Research, v. 96, p. 12, 461-12, 478.

Lucchitta, Ivo, and Suneson, N.H., 1991, Geologic Map of the Planet 2 SE quadrangle, Mojave and La Paz Counties, Arizona: U.S. Geological Survey Open-File report 91-354, 1:24,000.

Sherrod, D.R., and Tosdal, R.M., 1991, Geologic setting and Tertiary structural evolution of southwestern Arizona and southeastern California: Journal of Geophysical Research, v. 96, p. 12,407-12,423.

31 Simpson, Carol, Schweitzer, Janet, and Howard, K.A., 1991, A reinterpretation of the timing, position, and significance of the Sacramento Mountains detachment fault, SE California: Geological Society of America Bulletin, v. 103, p. 751-761.

1992

Alien, CM, 1992, A nested diapir model of a reversely zoned pluton: The Turtle pluton, S.E. California, USA: Journal of the Royal Society of Edinburgh, in press.

Bryant, Bruce, 1992, Preliminary geologic map of the Alamo Lake 30' x 60' quadrangle, west-central Arizona: U.S. Geological Survey Open-File Report 92-311, 27 p., 1:100,000. Howard, K.A., and Miller, D.M., 1992, Lake Cenozoic faulting at the boundary between the Mojave and Sonoran blocks: Bristol Lake area, California, in Richard, S.M., ed., Deformation associated with the Neogene eastern California shear zone, southeastern California and southwestern Arizona: Redlands, California, San Bernardino County Museum Special Publication 92-1, p. 37-47. Jachens, R.C., and Howard, K.A., 1992, Bristol Lake basin--Aj deep sedimentary basin along the Bristol-Danby trough, Mojave Desert, in Reynolds, R.E., compiler, Old Routes to the Colorado: Redlands, CA, San Bernardino County Museum Special Publication.

Richard, S.M., Sherrod, D.R., and Tosdal, R.M., 1992, Cfbola Pass fault, southwestern Arizona, in Richard, S.M., ed., Deformation associated with the Neogene eastern California shear zone, southwestern Arizona and southeastern California: Redlands, Calif., San Beniardino County Museum Special Publication, p. 66- 70.

Simmons, A.M., and Ward, A.W., 1992, Preliminary geologic map of the Mohon Mountains Volcanic Field, west-central Arizona, U.S. Geological Survey Open-file map 92-198 (with pamphlet), scale 1:50,000.

In Press

Boundy-Sanders, S.Q., Vedder, J.G., Sanders, C.O., and Howell, D.G. , in press, Miocene geologic history of eastern Santa Catalina Island, California, in Hochberg, F.G. and Haaker, P.L., eds., Proceedings of the third California Islands symposium: Santa Barbara, California, Santa Barbara Museum of Natural History and Southern California Academy of Sciences, in press.

Bryant, Bruce, and Wooden, J.L., in press, Proterozoic geology of the and vicinity, west-central Arizona: Proterozoic Geology and Ore Deposits in Arizona, Karlstom, K. and DeWitt, Ed, eds., Arizona Geological Society Digest 19.

Bryant, Bruce, Conway, C.M., Spencer, J.E., Reynolds, S.J., Otton, J.O., and Blacet, P.M., in prep., Geologic map and cross section across the boundary between the Colorado Plateau transition zone and the Basin and Range southeast of Bagdad, Arizona: U.S. Geological Survey Open-File Report 92-.

Bryant, Bruce, in press, Geologic map of the Poachie Range, Mohave and Yavapai Counties, Arizona: U.S. Geological Survey Miscellaneous Investigations Map 1-21 i>8, scale 1:24,000.

Condie, K.C., Noll, P.D., Jr. and Conway, C.M., in press, Gsochemical and detrital mode evidence for two sources of Early Proterozoic sediments from the Tonto Basin Supergroup, central Arizona: Sedimentary Geology.

Conway, C.M., and Karlstrom, K.E., in press, Early Proterozoic geology of Arizona: Arizona Bureau of Geology and Mineral Technology Fieldnotes, v. 16. Conway, C.M., Gonzales, D.A., Ward, A.W., Nealey, L D., and Simmons, A.M., in prep., Reconnaissance geologic map of the Bagdad 30 by 60 minute qu;»i<"-idranglc: U.S. Geological Survey Miscellaneous Field Study Map.

32 Howard, K.A., in press, Cenozoic stratigraphy of the Lead Mountain and Valley Mountain areas, eastern Bullion Mountains, southeastern California, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

Howard, K.A., Bacheller, John, Fitzgibbon, T.T., Powcll, R.E., and Alien, C.M., in review, Geologic map of the Valley Mountain 15-minute quadrangle, San Bernardino and Riverside Counties, California: U.S. Geological Survey Miscellaneous Investigations Map, scale 1:62,500. --

Howard, K.A., Chrisliansen, P.P., and John, B.E., in press, Cenozoic stratigraphy of northern Chemehuevi Valley and flanking and Sawtooth Range, southeastern California, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

Howard, K.A., Nielson, J.E., Wilshire, H.G., Nakata, J.K., Goodge, J.W., Reneua, S.L., John, B.E., and Hansen, V.L., in press, Geologic map of the Mohave Mountains area, Mohave County, western Arizona: U.S. Geological Survey Miscellaneous Investigations Map 1-2308, scale 1:48,000.

John, B.E., and Foster, D.A., submitted, Structural and thermal constraints on the initiation angle of detachment faulting in die southern Basin Range: The Chemehuevi Mountains case study: Geological Society of America Bulletin.

Lucchitta, Ivo, and Suneson, N.H., in press, Castaneda-Signal area, Arizona, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

Lucchitta, Ivo, and Suneson, N.H., in press, Geologic Map of the Castaneda Hills Southwest quadrangle, Mojave and La Paz Counties, Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ- , scale 1:24,000.

Lucchitta, Ivo, and Suneson, N.H., in press, Geologic Map of the Castaneda Hills quadrangle, Mojave County, Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ-1720, scale 1:24,000.

Lucchitta, Ivo, and Suneson, N.H., in press, Geologic Map of the Centennial Wash quadrangle, Mojave and La Paz Counties, Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ-1718, scale 1:24,000.

Lucchitta, Ivo, and Suneson, N.H., in press, Geologic Map of the Signal quadrangle, Mojave County, Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ-1709, scale 1:24,000.

Lucchitta, Ivo, in press, Foreword ~ origin and motivation of the volume, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona and Nevada: U.S. Geological Survey Bulletin.

Miller, J.M.G., and John, B.E., in press, Tertiary stratigraphy of die Chemehuevi Mountains, southeastern California and western Arizona, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

Miller, D.M, Miller, R.J., Nielson, J.E., Wilshire, H.G., Howard, K.A., and Stone, Paul, in press, Preliminary geologic map of die East Mojave National Scenic Area: California: U.S. Geological Survey Open-File Report 91-435, scale 1:100,000.

Nealey, L.D., Ward, A.W., Knight, R.J., Vivit, Davidon, and Kink, B.W., in press, Geochemistry of the Mohon Mountains Volcanic Field, in Ward, A.W., and Hendricks, J.D., eds., Geology and Geophysics of the Mohon Mountains volcanic Held, west-central Arizona, U.S. Geological Survey Bulletin.

Nielson, J.E., Howard, K.A. and Glazner, A.F., in press, Introduction to Uie area south of 1-40 and north of I- 10, California and Arizona, in Shcrrod, D.R., and Nielson, J.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

33 Powell, R.E., in press, Balanced palinspastic reconstruction of pre-late Cenozoic paleogeology, southern California: Geologic and kinematic constraints on evolution of the San Andreas fault system, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Andreas fault system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178. Powell, R.E., in press, Foreword, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Andreas fault system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178.

Richard, S.M., and Sherrod, D.R., in press, Introduction t(j> Tertiary Stratigraphy of the area south of 1-10, Arizona and California, in Sherrod, D.R., and Nielsorj, I.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.Sj Geological Survey Bulletin. Sherrod, D.R., in press, New Water Mountains, Arizona, in Sherrod, D.R., and Nielson, I.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin. Sherrod, D.R., and Hughes, K.M., in press, Southern Trfgo Mountains, Arizona, and eastern Chocolate Mountains, California: Picacho State Park area, in Sherrod, D.R., and Nielson, I.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin.

Sherrod, D.R., and Nielson, J.E., in press, Introduction ano owner's manual, in Sherrod, D.R., and Nielson, I.E., eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin. Sherrod, D.R., and Nielson, J.E., eds., in press, Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin. Tosdal, R.M., and Stone, Paul, submitted, Stratigraphic irelations and U-Pb geochronology of the Late Cretaceous upper McCoy Mountains Formation, southwest Arizona: Geological Society of America Bulletin. i

Ward, A.W., Nealey, L.D., and Ward, S.J., in press, Geology and petrology of the southern part of the Mohon Mountains Volcanic field, in Ward, A.W., and Hendricks, J.D., eds., Geology and geophysics of the Mohon Mountains volcanic field, west-central Arizona: U.S. Geological Survey Bulletin.

Willis, G.F., and Tosdal, R.M., in press, Formation of gold veins and breccias during dextral strike-slip faulting in the Mesquite Mining District, Southeastern California: Economic Geology. Wilshire, H.G., in press, Geology of the Cow Cove 7.5' quadrangle, San Bernardino Co., California: U.S. Geological Survey Open-File Report. Wilshire, H.G., in press, Geology of the Granite Spring 7.5' quadrangle, San Bernardino Co., California: U.S. Geological Survey Open-File Report. Wilshire, H.G., in press, Geology of the Indian Spring 7.5' Quadrangle, San Bernardino Co., California: U.S. Geological Survey Open-File Report.

Wilshire, H.G., in press, Geology of the Marl Mountains 7.5' quadrangle, San Bernardino Co., California: U.S. Geological Survey Open-File Report.

34 Abstracts

1985

Hamilton, W.B., 1985, Mode of extension of continental crust: Geological Society of London, Continental Extension Tectonics Program with Abstracts, Abstract 1.

John, B.E., and Howard, K.A., 1985, Brittle extension of the continental crustal along a rooted system of low- angle normal faults: Colorado River extensional corridor: Conference on heat and detachment in crustal extension on continents and planets: Houston, Lunar and Planetary Institute, Contribution n. 575, p. 58.

1986

Brooks, W.E., and Nealey, L.D., 1986, Implications of regional K/2O metasomatism on geochronology and inferred subduction geometry, southwestern Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 6, p. 551.

Bryant, Bruce, and Wooden, J.L., 1986, Early and Middle Proterozoic crustal history of the Poachie Range, Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 3, p. 344.

Connelly, T.J., Con way, C.M., and Robison, L.C., 1986, An Early Proterozoic volcano-hydrothermal system, Bagdad, Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 348.

Conway, C.M., and Silver, L.T., 1986, Early Proterozoic metallogenic provinces in Arizona: Geological Society of American Abstracts with Programs, v. 18, n. 5, p. 348. Conway, C.M., and Silver, L.T., 1986, Implications of the juxtaposition of two Early Proterozoic terranes in central Arizona, in Van Schmus, W.R., ed., International Field Conference on Proterozoic geology and geochemistry: Lawrence, University of Kansas, p. 91-92.

Conway, C.M., Stewart, J.H., Wrucke, C.T., McKee, E.H., and Weir, G.W., 1986, Mesozoic and Cenozoic conglomerates and unconformities in northeastern and central Arizona: Implications for evolution of highlands to the southwest: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 348.

Hamilton, W.B., 1986, Crustal evolution of California during Cretaceous and Cenozoic time: Geological Society of America Abstracts with Programs, v. 18, p. 112.

Howard, K.A., 1986, Evolution of crustal layering in southeastern California: Geological Society of America of Abstracts with Programs, v. 18, n. 2, p. 119.

Lucchitta, Ivo, 1986, A structural profile along the PACE transect in Arizona: Geological Society of America Abstracts with Programs 1986, v. 18, n. 5, p. 392.

Lucchitta, Ivo, 1986, Tertiary structural domains along the western margin of the Colorado Plateau in Arizona: Geological Society of America Abstracts with Programs, 1986, v. 18, n. 5, p. 392.

Morion, D.M., 1986, Contrasting plutons in the Peninsular Ranges batholith: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 161.

Nealey, L.D., Ward, A.W., and Simmons, A.M., 1986, Bimodal volcanism in the Mohon Mountains volcanic field, west-central Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 398. Nielson, I.E., Miller, D.M., and Thompson, S.M., 1986, Source of Uie Peach Springs Tuff: North of Kingman, Arizona?: Geological Society of America Abstracts with Programs, v. 18, p. 164.

35 Powell, R.E., 1986, Mesozoic and early Cenozoic fan folding in the Transverse Ranges: A window into the evolution of crustal structure in southern California: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 172.

Powell, R.E., 1986, Palinspastic reconstruction of crystalline-rock assemblages in southern California: San Andreas fault as part of an evolving system of late Cenozoic conjugate strike-slip faults: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 172. -

Silver, L.T., Con way, C.M., and Ludwig, K.R., 1986, Implications of a precise chronology for Early Proterozoic crustal evolution and caldcra formation in the Tonto Basin-Mazatzal Mountains region, Arizona: Geological Society of America Abstracts with Programs, V. 18, p. 413.

Stone, Paul and Howard, K.A., 1986, Tectonic framework of the McCoy Mountains Formation Evidence from the Palen Mountains, southeast California: Geological Society of America Abstracts with Programs, v. 18, n. 2, p. 190.

Tosdal, R.M., Haxel, G.B., and Dillon, J.T., 1986, Eviden ce and tectonic implications for northeastward movement on the Chocolate Mountains thrust, southeast California: Geological Society of America Abstracts with Programs, v. 18, p. 193.

Ward, A.W., Nealey, L.D., and Simmuns, A.M., 1986, Petrology of the Mohon Mountains volcanic field, north-central Arizona: a preliminary report: Arizona Gee logical Society Digest 16, p. 501.

Wooden, J.L., Miller, D.M., and Elliott, G., 1986, Early Proterozoic geology of the northern New York Mountains, SE California: Geological Society of America Abstracts with Programs, v. 18, n. 3, p. 424.

1987

Boundy-Sanders, S.Q., Vedder, J.G., and Howell, D.G., 1987, Intrusive and structural relations of the Miocene pluton, Santa Catalina Island, California: Third California Islands Symposium, Santa Barbara Museum of Natural History and Southern California Academy of Sciences, Program and Abstracts, p. 14.

Bryant, Bruce, and Naeser, C.W., 1987, Fission-track dating across the transition between the Basin and Range province and the Colorado Plateau, west central Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 604.

Conway, C.M., Nealey, L.D., Thliveras, S., and Gonzales, D., 1987, Geologic and petrochemical affinities of some Early Proterozoic suites in central Arizona: Journal of the Arizona-Nevada Academy of Science, v. 22, p. 49.

Fitzgibbon, T.T., and Howard, K.A., 1987, Tectonic significance of Middle Proterozoic diabase sheets in southeastern California and Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 6, p. 377.

Haxel, G.B., Bagby, W.C., and Tosdal, R.M., 1987, Upper- crustal section through a Middle to Late Jurassic regional metamorphic and plulonic terrane, Kofa Mountai us, southwestern Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 697. John, B.E., 1987, Structural reconstruction of the Chemehuevfi Mountains plutonic suite: Geometry of a mid- crustal intermediate to silicic magma chamber: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 717-718.

John, B.E., Howard, K.A., and McCarthy, J., 1987, Geologic and geophysical evidence for the nature of upper and mid-cruslal continental extension in the Colorado FRiver area, California and Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 717.

36 Nealey, L.D., Ward, A.W., Bartcl, A.J., Vivit, D.V., and Knight, R.J., 1987, Evolution and composition of post-40-Ma volcanic rocks in Arizona: EOS, American Geophysical Union Transactions, v. 68, p. 1,532.

Sherrod, D.R., Pickthom, L.G., TosdaJ, R.M., Grubensky, M.J., and Koch, R.D., 1987, Major early Miocene extensional deformation in southwestern Arizona and southeastern California: Geological Society of America Abstracts with Programs, v. 19, p. 841. Tosdal, R.M., and Haxel, G.B., 1987, Late Jurassic regional metamorphism and deformation, southeastern California and southwestern Arizona: Geological Society of America Abstracts with Programs, v. 19, p. 870-871. Willis, G.F., Tosdal, R.M., and Manske, S.L., 1987, The Mesquite mine, southeastern California: Epithermal gold mineralization in a strike-slip fault system: Geological Society of America Abstracts with Programs, v. 19, p. 892.

1988

Boundy-Sanders, S.Q., and Vedder, J.B., 1988, A dike swarm and correlative San Onofre Breccia indicate a (trans)tensional environment for the quartz dioritic Santa Catalina Island pluton: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A381. Bryant, Bruce, and Naeser, C.W., 1988, Laramidc events in the Colorado Plateau transition zone and adjacent parts of the Basin and Range, west-central Arizona: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 146.

Fitzgibbon, T.T., 1988, Tectonic significance and characteristics of Middle Proterozoic diabase sheets, eastern Mojave Desert region, California and Arizona: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 160. Haxel, G.B., Jacobson, C.E., and Tosdal, R.M., 1988, Multiple low-angle faults atop the Orocopia Schist, southwestern Arizona and southeastern California: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A383. John, B.E., and Mukasa, S.B., 1988, Structural and geochronologic (U/Pb) evidence for the nature of Cretaceous plutonism and mylonitization in the Chemehuevi Mountains core complex, southeastern California: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A274.

Miller, J.M.G., and John, B.E., 1988, Tectonic and paleogeographic implications of Miocene sedimentation, Chemehuevi Mountains, eastern California: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 216.

Nielson, J.E., and Beratan, K.K., 1988, Time of detachment faulting from Miocene sequences, Colorado River extended terrane: Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A393.

Nielson, I.E., Glazner, A.F., and Lux, D.R., 1988, Problems of dating the Peach Springs Tuff: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 218.

Tosdal, R.M., 1988, Late Cretaceous tectonics of the Blythe-Quartzite region, SE California and SW Arizona: Deformation within a oblique-slip orogene: Butte, Montana, 8th International Basement Tectonics meeting, p. 34.

1989

Earth, A.P., Wooden, J.L., and Tosdal, R.M., 1989, Josephine Mountain Intrusive: a model for calcalkalic cratonal plutonism at mid-crustal depth: Geological Society of America Abstracts with Programs, v. 21, n. 5, p. 54.

37 Beratan, K.K., Blom, R.G., Crippen, R.E., and Nielson, J.E., 1989, Use of Landsat thematic mapper images in regional correlation of syn-tectonic strata, Colorado River extensional corridor, California and Arizona: Geological Society of America Abstracts with Programs, v. 21, n. 6, p. A108.

John, B.E., Foster, D.A., and Harrison, T.M., 1989, Ar/Ar thermal history of the footwall to a low-angle normal fault: constraints on fault initiation angles in the southerns Basin and Range: Geological Society of London Symposium on the Geometry of Normal Faults.

Lucchitta, Ivo, 1989, Extensional tectonism in the southwestern United States: LPI Contribution, in Shabner, G., convener, and others, Abstracts for the Venus geoscience tutorial and Venus geologic mapping workshop, 708, p. 31. Willis, G.F., Tosdal, R.M., and Manske, S.L., 1989, Structural control on epithermal gold veins, and breccias in the Mesquite District, southeastern California: U.S. Geological Survey Circular 1035, p. 78-79. 1990

Bender, E.E., Miller, C.F., and Wooden, J.L., 1990, The Fenner Gneiss and associated units: An Early Proterozoic composite batholith, Piuie and Old Woman Mountains, California: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 7. Bryant, Bruce, Mehneit, H.H., and Miller, R.J., 1990, Miocene deformation on the southwest margin of the Colorado Plateau transition zone, Poachic Range and vicinity, west-central Arizona: Geological Society of America Abstracts wilh Programs, v. 22, n. 3, p. 10.

Conway, C.M., 1990, Provenance of Mesozoic and Tertiary conglomerates in the and Little Colorado River region: Flagstaff, Museum of Northern Arizona, Abstracts of the Symposium on Southwestern Geology and Paleontology, p. 4. Haxel, G.B., Simmons, A.M., and McCarthy, J., 1990, Synextensional dioritic magmatism within and beneath metamorphic core complexes, southern Arizona and southeastern California: integration of structural, petrologic, and PACE seismic refraction data: Geologicaj Society of America Abstracts with Programs, v. 22, n. 3, p. 28-29. Howard, K.A., Nielson, J.E., Nakaia, J.K., and Wilshire, H.G., 1990, Upended crustal slabs and low-angle extensional faults in the Colorado River extensional corridbr: Geologic map of the Mojave Mountains area, western Arizona: Geological Society of America Abstracts with programs, v. 22, n. 3, p. 30.

John, B.E., 1990, Extensional slivering and detachment of a Late Cretaceous laccolith inflated ductile shear system: Geologic map of the Chemehuevi Mountains core complex: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 32.

Miller, J.M.G., and John, B.E., 1990, Sedimentation patterns near an undulating detachment fault during continental extension, Chemehuevi Mountains, easteriii California: Abstracts of 13th International Sedimentary Congress, Nottingham, U.K., p. 359. Simmons, A.M., Young, R.A., and Haxel, G.B., 1990, Middle Tertiary volcanism in the northern -upper Trout Creek area, wesi-central Arizona: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 84.

Tosdal, R.M., 1990, Jurassic low-angle ductile shear zones, |SE California and SW Arizona: Thrust faults, extensional faults, or rotated high-angle faults?: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 89.

38 1991

Alien, C.M., 1991, A nested two diapir model of a reversely zoned pluton: the Turtle pluton, SE California, USA: Abstracts from the Second Hullon Symposium on Granites and Related Rocks, Australian Bureau of Mineral Resources Record 1991/25, p. 1. Beratan, K.K., and Nielson, I.E., 1991, The Colorado River extensional corridor An analog for the early stages of passive margin formation: American Association of Petroleum Geologists Bulletin, v. 75, n. 5, p. 356. Beratan, K.K., and Nielson, I.E., 1991, Test of "hinge" models with synextensional deposits, Whipple detachment system, California and Arizona: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A131. Conway, C.M., 1991, Cratonization at 1.7 Ga in the southwestern United States: Geological Society of America Abstracts with Programs v. 23, n. 4, p. 13.

Conway, C.M., 1991, Tectonomagmatic sellings of Proterozoic metallogenic provinces in the southwestern United Slates, in Good, E.E., Slack, J.F., and Kotra, R.K., eds., USGS Research on Mineral Resources - 1991 Program and Abstracts, Seventh Annual V.E. McKelvey Forum on Mineral and Energy Resources: U.S. Geological Survey Circular 1062, p. 9-10. Hamilton, W.B., and Howard, K.A., 1991, Detachment faults-steep active sectors are bounded by migrating hinges at bolh tops and bottoms: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A189-A190.

Howard, K.A., and John, B.E., 1991, Dishannonic drape folds associated with upper-crustal extension in the southern Basin and Range: Geological Society Abstracts with Programs, v. 23, n. 2, p. 36. John, B.E., 1991, Tilted plutons in the southern Basin and Range: Where and how?: Geological Society of America Abstracts with Programs, v. 23, n. 2, p. 42.

McCaffrey, K.J.W., Howard, K.A., Bailey, C.M., and Foster, D.A., 1991, Jurassic syntectonic pluton emplacement in the Clipper Mountains, eastern Mojave Desert, California: Geological Society of America Abstracts witli Programs, v. 23, n. 5, p. 250.

McCaffrey, K.J.W., Miller, C.F., Howard, K.A., Karlstrom, K.E., and Simpson, C., 1991, Granitoid emplacement and deformation in the Old Woman Mountains, southeastern California: Second Hutton Symposium on Granites and Related Rocks, September, Abstracts, Bureau of Mineral Resources, Geology and Geophysics Record 1991/25, p. 63.

Richard, S.M., and Haxel, G.B., 1991, Progressive exhumation of the Orocopia and Pelona Schists along a composite normal fault system, southeastern California and southwestern Arizona: Geological Society of America Abstracts with Programs, v. 23, n. 2, p. 92. Simmons, A.M., and Haxcl, G.B., 1991, Synextensional mafic dikes in metamorphic core complexes, southern Arizona: Samples of primitive or parental magma for widespread middle Tertiary basaltic andesite volcanism in the Southwest: Geological Society of America Abstracts with Programs, v. 23, n. 4, p. 94. Todd, V.R., Giriy, G.H., Shaw, S.E., and Jachens, R.C, 1991, Geochemical, geochronologic, and structural characteristics of Jurassic plutonic rocks, Peninsular Ranges, California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A249.

Todd, V.R., Shaw, S.E., Jachens, R.C., Kimbrough, D.L., Girty, G.H., and Hammarstrom, J.M., 1991, The El Cajon 30' x 60' quadrangle, southern California: A geologic history from early Mesozoic continental growth to modern rift-transform tectonics: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A479.

39 Todd, V.R., Shaw, S.E., Girty, G.H., and Jachens, R.C., 199 , A probable Jurassic plutonic arc of continental affinity in Uie Peninsular Ranges batholith, southern ( California: Tectonic implications: Geological Society of America Abstracts wilh Programs, v. 23, n. 2, p. 104. Tosdal, R.M., and Willis, G.F., 1991, Formation and dismemberment of epithermal gold ore bodies during strike-slip faulting in the Mesquite mining district, souilieastern California, U.S.A.: Workshop on Ore Forming processes, Lima, Peru, July 9-12, 1991. -

Tosdal, R.M., and Wooden, J.L., 1991, Middle Jurassic pi utOns, SE California and SW Arizona: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A308. Willis, G.F., and Tosdal, R.M., 1991, Lale Cenozoic dismemberment of the late Cenozoic gold ore bodies in Uie Mesquite Mining District, SE California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A463.

1992

Earth, A.P., Tosdal, R.M., and Wooden, J.L., 1992, Initiation of the Mesozoic Cordilleran arc in southern California: Geological Society of America Abstracts withth Programs, v. 24, n. 5, p. 6.

Lucchitta, Ivo, 1992, Dips and extension: Geological Society of America Abstracts with Programs, v. 24, n. 5, p. 66.

PACE-related Reports and Abstracts

1985

Tosdal, R.M., Haxel, G.B., and Dillon, J.T., 1985, Litholog;ic associations of gold deposits, southeastern California and southwestern Arizona: Geological Society of America Abstracts with Programs, v. 17, p. 414.

1987

Bagby, W.C., Haxel, G.B., Smith, D.B., Koch, R.D., Grubensky, M.J., Sherrod, D.R., and Pickthorn, L.B.G., 1987, Mineral resource assessment of the Kofa , Arizona: U.S. Geological Survey Open-File Report 87-609, 45 p., 5 plates, scale 1:100,000.

Conway, C.M., Hanna, W.F., Hendricks, J.D., Hoover, D.B., Knepper, D.H., Jr., McCarthy, J.H., Jr., Mosier, D., Page, J.J., Pitkin, J.A., and Southworth, C.S., 1987 Planning document for the mineral resource assessment of the Prescott 1° x 2° quadrangle, Arizona Administrative report to the U.S. Geological Survey Office of Mineral Resources, 130 p., 3 appendices, 39 plates scale 1:250,000.

Gray, Floyd, Miller, R.J., Grubensky, M.J., Tosdal, R.M., Haxel, G.B., Peterson, D.W., May, D.J., and Silver, L.T., 1987, Geologic map of the Ajo and Lukeville 1° by 2° quadrangles, southwestern Arizona: U.S. Geological Survey Open-File Report 87-0347, scale 1:250,000, 23 p. Howard, K.A., Kilburn, J.E., Simpson, R.W., Filzgibbon, T.T'., Detra, D.E., and Raines, G.L., 1987, Mineral resources of the Bristol/Granite Mountains Wilderness ludy Area, San Bernardino County, California: U.S. Geological Survey Bulletin 1712-C, 18 p.

Smith, D.B., Berger, B.R., Tosdal, R.M., Sherrod, D.R., Raines , G.L., Griscom, A., Helferty, M.G., Rumsey, C.M., and McMahan, A.B., 1987, Mineral Resources ol the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California: U.S. Geological Survey Bulletin 1711,21 p.

40 Todd, V.R., Gather, E., Liplon, D.A., Kilburn, J.E., Deira, D.E., Griscom, A., Knepper, D.H., Jr., and Kruse, F.A., 1987, Mineral resources of the Sawtooth Mountains and Carrizo Gorge/Eastern McCain Valley Wilderness Study Areas, San Diego County, California: U.S. Geological Survey Bulletin 1711-B, 15 p.

Todd, V.R., Detra, D.E., Kilburn, J.E., and Cainpbell, H.W., 1987, Mineral resources of the Fish Creek Mountains Wilderness Study Area: Imperial County, California: U.S. Geological Survey Bulletin 1711- C, 14 p.

Todd, V.R., Kilburn, J.E., Detra, D.E., and McHugh, E.L., 1987, Mineral resources of the Jacumba/In-ko-pah Wilderness Study Area, Imperial County, California: U.S. Geological Survey Bulletin 1711-D, 18 p. Wells, R.E., and Simpson, R.W., 1987, More paleomagnetic results from the Miocene Columbia River Basalt Group, Oregon and Washington: Stratigraphic and tectonic implications: Geological Society of America Abstracts with Programs, v. 19, p. 463.

1988

Hamilton, W.B., 1988, Detachment faulting in the Death Valley region, California and Nevada: U.S. Geological Survey Bulletin 1790, p. 51-85.

Hamilton, W.B., 1988, Tectonic setting and variations with depth of some Cretaceous and Cenozoic structural and magmatic systems of the western United States, in Ernst, W.G., ed., Metamorphism and crustal evolution of the western United States (Rubey volume): Englewood Cliffs, N.J., Prentice-Hall, p. 1-40.

Hamilton, W.B., 1988, Laramide crustal shortening: Geological Society of America Memoir 171, p. 27-39.

Haxel, G.B., Anderson, T.H., Riggs, N.R., and Goodwin, L.G., 1988, The Papago terrane: A crustal anomaly in soutli-central Arizona and north-central Sonora: Geological Society of America with Programs, v. 20, n. 3, p. 168.

Haxel, G.B., Smith, D.B., Whittington, C.L., Griscom, A., Diveley-White, D.V., Powell, R.E., and Kreidler, T.J., 1988, Mineral resources of the Orocopia Mountains Wilderness Study Area, Riverside County, California: U.S. Geological Survey Bulletin 1710-E, 22 p.

Howard, K.A., Nielson, J.E., Simpson, R.W., Hazlett, R.W., Alminas, H.V., Nakata, J.K., and McDonnell, J.R., Jr., 1988, Mineral resources of the Turtle Mountains Wilderness Study Area, San Bernardino County, California: U.S. Geological Survey Bulletin 1713-B, 28 p.

John, B.E., Hanna, W.F., Hassemer, J.R., Pitkin, J.A., and Lane, M.E., 1988, Mineral resources of the Chemehuevi-Needles Wilderness Study area (AZ-050-004), San Bernardino County, California: U.S. Geological Survey Open-File Report 87-586, 17 p.

Wells, R.E., and England, P.C., 1988, Continuum model of rotations recorded in Miocene flows of the Columbia River Basalt Group, Oregon and Washington: EOS, American Geophysical Union Transactions, v. 69, p. 1,456.

1989

Hamilton, W.B., 1989, Crustal geologic processes in the United States: Geological Society of America Memoir 172, p. 743-781.

Sherrod, D.R., Smith, D.B., Koch, R.D., Hanna, W.F., Pitkin, J.A., and Lane, M.E., 1989, Mineral resources of the New Water Mountains Wilderness Study Area, La Paz County, Arizona: U.S. Geological Survey Bulletin 1702-B, 18 p.

Wells, R.E., Simpson, R.W., Bentley, R.D., Beeson, M.H., Mangan, M.T., and Wright, T.L., 1989, Con-elation of Miocene flows of the Columbia River Basalt Group from the central Columbia River

41 Plateau to the coast of Oregon and Washington, in Hooper, P., and Reidel, S., eds., Volcanism and tectonism in the Columbia River Hood basalt province, Geological Society of America Special Paper 239, p. 113-130.

Wells, R.E., 1989, Paleomagnetic rotations and the Cenoz.oic tectonics of the Cascade arc, Washington, Oregon, and California, in Muffler, L.P.J., Blackwei 1, D.D., and Weaver, C.A., eds., Geological, Geophysical and Tectonic setting of the Cascade Range: U.S. Geological Survey Open-File Report 89-178 (Red Book) p. 1-16.

1990

Blakely, R.J., and Wells, R.E., 1990, Cascade Range evolution: Constraints from gravity and magnetic anomalies: EOS, American Geophysical Union Transactions, v. 71, p. 1,607. Conway, C.M., Hassemer, J.R., Knepper, D.H., Jr., Pitkin, iJ.A., Jachens, R.C., and Chatman, M.L., 1990, Mineral resources of the Wabayuma Peak Wilderness! Study Area, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-E, 52 p., scale 1:36,0001 Goodwin, L.G., and Haxel, G.B., 1990, Structural evolution of the southern Baboquivari Mountains, south- central Arizona and north-central Sonora: Tectonics: v. ', p. 1,077-1,095.

Riggs, N.R., and Haxel, G.B., 1990, The Early to Middle Jurassic magmatic arc in southern Arizona: plutons to sand dunes, in Gehrels, G.E., and Spencer, J.E., eds., jeologic excursions through the Sonoran Desert region, Arizona and Sonora: Arizona Geological Survey pecial Paper 7, p. 90-103.

Riggs, N.R., Haxel, G.B., and Busby-Spera, C.J., 1990, Paleogeography and tectonic setting of the Jurassic magmatic arc in southern Arizona: progress and problems: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 78.

Sherrod, D.R., Tosdal, R.M., Vaughn, R.B., Smith, D.B., K einkopf, M.D., and Wood, Robert H., II, 1990, Mineral resources of the Trigo Mountains Wildernesi Study Area, La Paz County, Arizona: U.S. Geological Survey Bulletin 1702-J, 16 p.

Tosdal, R.M., Bryant, Bruce, Hill, R.H., Hanna, W.F., Knuppe r, D.H., Jr., Jones, S.L., Oliver, K.S., and Tuftin, S.E., 1990, Mineral resources of the Wilderness Study Area, Las Paz and Mohave Counties, Arizona: U.S. Geological Survey Bull tin 1701-G, 24 p. Weisman, M.K., and Weir, G.W., 1990, Geologic map of the Pine 7.5-minute quadrangle, Coconino and Gila Counties, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map 2123, scale 1: 24,000.

Wells, R.E., 1990, Paleomagnetic rotations and the Cenozoic tectonics of the Cascade Arc, Washington, Oregon, and California: Journal of Geophysical Research!, v. 95, p. 19,409-19,417.

1991

England, P.C., and Wells, R.E., 1991, Neogene rotations aid semi-continuous deformation of the Pacific Northwest continental margin: Geology, v. 19, p. 978-981

U.S. Geological Survey (contributors: K.R. Bishop, CM.1 Conway, J.C. Dohrenwend, J.S. Duval, G.B. Haxel, J.H. Hendricks, C.A. Hodges, R.C. Jachens, M J. Kingston, D.L. Mangan, R.J. Miller, D.M. Miller, G.A. Nowlan, M. Power, J.J. Rytuba, S.L. Simps :>n, T.G. Theodore (editor), R.M. Tosdal), 1991, Evaluation of metallic mineral resources and their geolo ;ic controls in the East Mojave National Scenic Area, San Bernardino County, California: U.S. Geological Survey Open-File Report 91-427, 278 p., 6 plates.

42 In Press

Beikman, H.M., Haxel, G.B., and Miller, R.J., in press, Geologic map of the Tohono O'Odham Indian Reservation, southern Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I- 2017, scale 1:125,000. Evans, J.G., Sherrod, D.R., Hill, R.H., Jachens, R.C., and McDonnell, J.R., Jr., in press, Mineral resources of the Mojave Wash Wilderness Study Area, Mojave County, Arizona: U.S. Geological Survey Bulletin 1704-A.

Gray, Floyd, Tosdal, R.M., Pcterson, J.A., Cox, D.P., Miller, R.J., Klein, D.P., Theobald, P.K., Haxel, G.B., Grubensky, M.J., Raines, G., Barton, H.N., Singer, D.A., and Eppinger, R.G., in press, The Conterminous United States Mineral Assessment Program: Background information to accompany folio of geologic, geochemical, geophysical, and mineral resource maps of the Ajo-Lukeville 1° by 2° quadrangle, Arizona: U.S. Geological Survey Circular 1082.

Grubensky, M.J., Haxel, G.B., and Koch, R.D., in press, Geologic map of the Mountains, southwestern Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-2138, scale 1:62,500.

Snavely, P.O., Jr., and Wells, R.E., in press, Cenozoic evolution of the continental margin of Oregon and Washington, in Rogers, A., and others, eds., Earthquake Hazards in the Pacific Northwest of the United States: U.S. Geological Survey Open-File Report 91-441B, 34 p., a chapter in U.S. Geological Survey Professional Paper 1560. Weir, G.W., Ulrich, G.E., and Nealey, L.D., in prep., Geologic map of the Long Valley quadrangle, Coconino County, Arizona: U.S. Geological Survey Geologic Quadrangle Map, scale 1:24,000.

43 ALPHABETIC LIST OF PUBLICATIONS

Alien, C.M., 1986, Liquidus phases in granile to quartz Anderson, J.L., Young, E.D., Barth, A.P., Wooden, J.L., diorite a natural example from magma mixing: Tosdal, R.M., and Morrison, Jean, 1991, Mesozoic Geological Society of America Abstracts with batholiths of the Mojave: Geological Society of Programs, v. 18, p. 525. America Abstracts with Programs, v. 23, n. 2, p. 3.

Alien, C.M., 1986, Rb-Sr pseudochron: the result of mixing Ba|gby, W.C., Haxel, G.B., Smith, D.B., Koch, R.D., in a reversely-zoned calcalkaline pluton, Turtle Grubensky, M.J., Sherrod, D.R., and Pickthorn, L.B.G., Mountains, S.E. California: Geological Society of 1987, Mineral resource assessment of the Kofa National America Abstracts with Programs, v. 18, p. 81. Wildlife Refuge, Arizona: U.S. Geological Survey Open-File Report 87-609, 45 p., 5 plates, scale Alien, C.M., 1987, Multiple sources of Cretaceous magmas, 1:100,000. southern Turtle Mountains , S.E. California: Geological Society of America Abstracts witli Programs, v. 9, p. Barth, A.P., Ginzel, B.M., Wooden, J.L., and Tosdal, R.M., 569. 1991, U-Pb zircon geochronology and geochemistry of Mendenhall gneiss, western San Gabriel Mountains, Alien, C.M., 1989, Petrogenesis of the reversely zoned southern California: Geological Society of America Turtle pluton, S.E. California [Ph.D. thesis]: Abstracts with Programs, v. 23, n. 5, p. A453. Blacksburg, Virginia Polytechnic Institute and Stale University, 374 p. Balrth, A.P., Tosdal, R.M., and Wooden, J.L., 1988, Characteristics and implications of Triassic and Jurassic Alien, C.M., 1991, A nested two diapir model of a reversely granitoids in the San Gabriel, Mule, and Trigo zoned pluton: the Turtle pluton, SE California, USA: Mountains, southern California and southwestern Abstracts from the Second Hullon Symposium on Arizona: Geological Society of America Abstracts with Granites and Related Rocks, Australian Bureau of Programs, v. 20, n. 3, p. 141. Mineral Resources Record 1991/25, p. 1. Barth, A.P., Tosdal, R.M., and Wooden, J.L., 1990, Alien, C.M., 1991, Local equilibrium of mafic enclaves and Pelrologic comparison of Triassic plutonism in the San granitoids of the Turtle pluton, S.E. California: mineral Gabriel and Mule Mountains in southern California: chemical and isotopic evidence: American Journal of Geophysical Research, v. 95, p. 20,075- Mineralogist, v. 76, p. 574-588. 20,096.

Alien, C.M., 1992, A nested diapir model of a reversely Barth, A.P., Tosdal, R.M., and Wooden, J.L., 1992, zoned pluton: The Turtle pluton, S.E. California, USA: Initiation of the Mesozoic Cordilleran arc in southern Journal of the Royal Society of Edinburgh. i« press. California: Geological Society of America Abstracts witli Programs, v. 24, n. 5, p. 6. Alien, CM., Foster, D.A., and Wooden, J.L., 1990, Sources of plutons and P-T-t path of southern Turtle Mountains, Barth, A.P., Wooden, J.L., and May, D.J., 1990, S.E. California: Geological Society of America Geochemistry of Cretaceous gneisses, SE San Gabriel Abstracts with Programs, v. 22, n. 3, p. 1. Mountains, southern California: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 5. American Geophysical Union, 1992, California-Arizona Crustal Transect-Interim Synthesis (CACT1S), Reprints Earth, A.P., Wooden, J.L., and May, D.J., in press, Small of papers published in the Journal of Geophysical scale heterogeneities of Phanerozoic lower crust: Research Solid Earth and Planets: Washington, D.C., Evidence from isotopic and geochemical systematics of American Geophysical Union. mid-crustal granulite gneisses, San Gabriel Mountains, southern California: Contributions to Mineralogy and Ammon, C.J., and Benz, H.M., 1991, A finite-difference Petrology. based inversion of Pg arrival times: EOS, American Geophysical Union Transactions, v. 72, p. 334-335. Barth, A.P., Wooden, J.L., and Tosdal, R.M., 1989, I Josephine Mountain Intrusive: a model for calcalkalic Anderson, J.L., Earth, A.P., Bender, E.E., Davis, M.J., cratonal plutonism at mid-crustal depth: Geological Farber, D.F., Hayes, E.M., Johnson, D.A., Young, Society of America Abstracts with Programs, v. 21, n. E.D., Wooden, J.L., and Tosdal, R.M.. 1990, San 5, p. 54. Gabriel (Tujunga) terrane - Coming home to Mojave: Geological Society of America Abstracts with Battis, J.C., 1990, Analysis of small aperture array data from Programs, v. 22, n. 7, p. A303. the 1989 PACE experiment: EOS, American Geophysical Union Transactions, v. 71, p. 1,563. Anderson, J.L., Wooden, J.L., and Bender, E.E., 1989, Early and Middle Proterozoic crustal evolution of the Beaudoin, B., Howie, J.M., Parsons, T., and Thompson, southwestern U.S.: Geological Society of America G.A., 1990, Integrated wide-angle and near-vertical Abstracts with Programs, v. 21, n. 6, p. A23. incidence three-component reflection profiling of the Colorado Plateau margin, Arizona, USA: EOS, Anderson, J.L., Wooden, J.L., and Bender, E.E., in press, American Geophysical Union Transactions, v. 71, p. Early and Middle Prolerozoic crusial evolution of the 1,593. western transitional zones: California, Nevada, Arizona, /// Chapter 4, Transcontinental Prolerozoic Beiikmaii, H.M., Haxel, G.B., and Miller, R.J., in press, Provinces: Geological Society of America DNAG Vol., Geologic map of the Tohono O'Odham Indian Precambrian-Conleriiiinnus U.S. Reservation, southern Arizona: U.S. Geological Survey

44 Miscellaneous Geologic Investigations Map 1-2017, K.M.F., and Durgin, D.C., eds., Southern extension of scale 1:125,000. die Carlin trend: influence of structure and stratigraphy on gold deposition: Geological Society of Nevada, p. Bender, E.E., Anderson, J.L., and Wooden, J.L., 1991, 30-38. Temporal variations in the chemistry of Early Proterozoic plutons from the southwest United States: Blakely, R.J., and Wells, R.E., 1990, Cascade Range Geological Society of America Abstracts with evolution: Constraints from gravity and magnetic Programs, v. 23, n. 5, p. A57. anomalies: EOS, American Geophysical Union Transactions, v. 71, p. 1,607. Bender, E.E., Anderson, J.L., Wooden, J.L., Howard, K.A., and Miller, C.F., 1988, Correlation of 1.7 Ga granitoid Borclierdt, R., Fuis, G.S., Mooney, W, 1986, Introduction, plutonism in the lower Colorado River region: in Wennerberg, L., ed., Three-component digital Geological Society of America Abstracts with velocity and acceleration recordings made in Programs, v. 20, n. 3, p. 142. conjunction with the PACE refraction experiment (November 1985): U.S. Geological Survey Open-File Bender, E.E., Miller, C.R, and Wooden, J.L., 1990, The Report 86-387, p. 1. Fenner Gneiss and associated units: An Early Proterozoic composite batholith, Piute and Old Woman Borclierdt, R., Fuis, G.S., Mooney, W., Wennerberg, L., Mountains, California: Geological Society of America Sembera, E., Gibbs, J. and Dietel, C., 1986, Site- Abstracts with Programs, v. 22, n. 3, p. 7. selection and instrumentation configurations, in Wennerberg, L., ed., Three-component digital velocity Benz, H.M., McCarthy, J., and Mooney, W.D., 1990, and acceleration recordings made in conjunction with Evidence for an upper mantle LVZ and an underlying 80- the PACE refraction experiment (November 1985): U.S. km-deep discontinuity from the 1987-1989 PACE Geological Survey Open-File Report 86-387, p. 5-8. seismic refraction/wide-angle reflection data: EOS, American Geophysical Union Transactions, v. 71, p. Boundy-Sanders, S.Q., and Vedder, J.B., 1988, A dike swarm 1,564. and correlative San Onofre Breccia indicate a (trans)tensional environment for the quartz dioritic Beratan, K.K., Blom, R.G., Crippen, R.E., and Nielsou. J.E., Santa Catalina Island pluton: Geological Society of 1989. Use of Landsat thematic mapper images in America Abstracts with Programs, v. 20, n. 7, p. A381. regional correlation of syn-tectonic strata, Colorado River extensional corridor,. California and Arizona: Boundy-Sanders, S.Q., Vedder, J.G., and Howell, D.G., 1987, Geological Society of America Abstracts with Intrusive and structural relations of the Miocene pluton, Programs, v. 21, n. 6, p. A108. Santa Catalina Island, California: Third California Islands Symposium, Santa Barbara Museum of Natural Beratan, K.K., Blom, R.G., Nielson, J.E., and Crippen, R.E., History and Southern California Academy of Sciences, 1990. Use of Landsat thematic images in regional Program and Abstracts, p. 14. correlation of syntectonic strata, Colorado River extensional corridor, California and Arizona: Journal of Boundy-Sanders, S.Q., Vedder, J.G., Sanders, C.O., and Geophysical Research, v. 95, p. 615-624. Howell, D.G., in press, Miocene geologic history of eastern Santa Catalina Island, California, in Hochberg, Beratan, K.K., and Nielson, J.E., 1991, Test of "hinge" F.G. and Haaker, P.L., eds., Proceedings of the third models with synexlensional deposits, Whipple California Islands symposium: Santa Barbara, detachment system, California and Arizona: Geological California, Santa Barbara Museum of Natural History Society of America Abstracts with Programs, v. 23, n. and Southern California Academy of Sciences, in press. 5, p. A131. Bouse, R.M., Ruiz, J., Titley, S.R., Lang, J.R., and Wooden, Beratan, K.K., and Nielson, J.E., 1991, The Colorado River J.L., 1990, Common Pb isotopic evidence from extensional corridor: An analog for the early stages of Laramide plutons and Phanerozoic mineralization in passive margin formation: American Association of Arizona for the inheritance of isotopic and metal ratios Petroleum Geologists Bulletin, v. 75, n. 5, p. 356. from Proterozoic basement: EOS, American Geophysical Union Transactions, v. 71, p. 1,681. Billingsley, G.H., Conway, C.M.. and Beard, L.S., 1988, Geologic map of the Prescott 30 by 60 minute Bouse, R.M., Wooden, J.L., Koski, R.A., and Pickthron, quadrangle: U.S. Geological Survey Open-File Report L.B., 1987, Pb isotopic compositions for stratiform 88-372, scale 1:100,000. manganese deposits and their Miocene host rocks,Nevada and Arizona: Geological Society of Blakely, R.J., and Jachens, R.C., 1990, Concealed mineral America Abstracts with Programs, v. 19, p. 360. deposits of Nevada: Insights from three-dimensional analysis of gravity and magnetic anomalies: Geology Brooks, W.E., and Nealey, L.D., 1986, Implications of and Ore Deposits of the Great Basin: Geological regional K.2O metasomatism on geochronology and Society of Nevada, Program with Abstracts; p. 52-53. inferred subduction geometry, southwestern Arizona: Geological Society of America Abstracts with Blakely, R.J., and Jachens, R.C., 1990, 1991, Regional Programs, v. 18, n. 6, p. 551. study of mineral resources in Nevada: Insights from three-dimensional analysis of gravity and magnetic Bryant, Bruce, 1992, Preliminary geologic map of the Alamo anomalies: Geological Society of America Bulletin, v. Lake 30' x 60' quadrangle, west-central Arizona: U.S. 103, p. 804-816. Geological Survey Open-File Report 92-311, 27 p., scale 1:100,000. Blakely, R.J., Jachens. R.C., and Sherlock. M.. 1990. Bulk mineable precious meiul deposits and crust a I structure: a statistical comparison, in Dean. D.A., Benedetto,

45 Bryant, Bruce, in press, Geologic map of the Poachie Range, of Early Proterozoic sediments from the Tonto Basin Mohave and Yavapai Counties, Arizona: U.S. Supergroup, central Arizona: Sedimentary Geology. Geological Survey Miscellaneous Investigations Map I- 2198, scale 1:24,000. Connelly, T.J., Conway, C.M., and Robison, L.C., 1986, An Early Proterozoic volcano-hydrothermal system, Bryant, Bruce, Conway, C.M., Spencer, J.E., Reynolds, S.J., Bagdad, Arizona: Geological Society of America Otton, J.O., and Blacel, P.M., in prep., Geologic map Abstracts with Programs, v. 18, n. 5, p. 348. and cross section across (lie boundary between the Colorado Plateau transition zone and the Basin and Conrad, J.E., Hill, R.H., Jachens, R.C., and Neubert, J.T., Range southeast of Bagdad, Arizona: U.S. Geological 1990, Mineral resources of the Black Mountains North Survey Open-File Report 92-. and Burns Spring Wilderness Study Areas, Mohave County, Arizona: U.S. Geological Survey Bulletin Bryant, Bruce, Mehnert, H.H., and Miller, R.J., 1990, 1737-C, 22 p. Miocene deformation on (lie southwest margin of the Colorado Plateau transition zone, Poachie Range and Conway, C.M., 1986, Field guide to Early Proterozoic strata vicinity, west-central Arizona: Geological Society of that host massive sulfide deposits at Bagdad, Arizona, America Abstracts with Programs, v. 22, n. 3, p. 10. in Nations, J.D., Conway, C.M., and Swann, G.A., eds., Geology of central and northern Arizona, Geological Bryant, Bruce, and Naeser, C.W., 1987, Fission-track dating Society of America, Rocky Mountain Section, field trip across the transition between the Basin and Range guidebook: Flagstaff, Arizona, Northern Arizona province and the Colorado Plateau, west central University, p. 140-157. Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 604. Conway, C.M., 1990, Provenance of Mesozoic and Tertiary conglomerates in the Mogollon Rim and Little Bryant, Bruce, Naeser, C.W., and Fryxell, J.E., 1988, Colorado River region: Flagstaff, Museum of Northern Laramide events in the Colorado Plateau transition zone Arizona, Abstracts of the Symposium on Southwestern and adjacent parts of the Basin and Range, west-central Geology and Paleontology, p. 4. Arizona: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 146 Conway, C.M., 1991, Cratonization at 1.7 Ga in the southwestern United States: Geological Society of Bryant, Bruce, Naeser, C.W., and Fryxell, I.E., 1991, America Abstracts with Programs v. 23, n. 4, p. 13. Implications of low-temperature cooling history on a transect across the Colorado Plateau-Basin and Range Conway, C.M., 1991, Tectonomagmatic settings of Boundary, west central Arizona: Journal of Geophysical Proterozoic metallogenic provinces in the southwestern Research, v. 96, p. 12.375-12,388. United States, in Good, E.E., Slack, J.F., and Kotra, R.K., eds., USGS Research on Mineral Resources - 1991 Bryant, Bruce, and Wooden, J.L., 1986, Early and Middle Program and Abstracts, Seventh Annual V.E. McKelvey Proterozoic cruslal history of (lie Poachie Range, Forum on Mineral and Energy Resources: U.S. Arizona: Geological Society of America Abstracts with Geological Survey Circular 1062, p. 9-10. Programs, v. 18, n. 3, p. 344. Conway, CM., Connelly, T.J., and Robison, L.C., 1986, An Bryant, Bruce, and Wooden, J.L., 1989, Lower plate rocks of Early Proterozoic volcanic-hydrothermal-exhalative the Buckskin Mountains, Arizona-A progress report, in system at Bagdad, Arizona: Arizona Geological Society Spencer, J.E., and Reynolds, S.J., eds., Geology of the Digest, v. 16, p. 24-34. Buckskin Mountains west-central Arizona: Arizona Geological Survey Bulletin 198, p. 47-50, 1 fig. Conway, CM., Gonzales, D.A., Ward, A.W., Nealey, L.D., and S iinnions, A.M., in prep., Reconnaissance geologic Bryant, Bruce, and Wooden, J.L., in press, Proterozoic map of (he Bagdad 30 by 60 minute quadrangle: U.S. geology of the Poachie Range and vicinity, west-central Geological Survey Miscellaneous Field Study Map. Arizona: Proterozoic Geology and Ore Deposits in Arizona, Karlstorn, K. and DeWitt, Ed, eds., Arizona Conway, C.M., Hanna, W.F., Hendricks, J.D., Hoover, D.B., Geological Society Digest 19. Knepper, D.H., Jr., McCarthy, J.H., Jr., Mosier, D., Page, J.J., Pitkin, J.A., and Southworth, C.S., 1987, Calzia, J.P., Frisken, J.G., Jacliens, R.C., McMahan, A.B., Planning document for the mineral resource assessment and Rumsey, C.M., 1987, Mineral Resources of the of the Prescott 1° x 2° quadrangle, Arizona: Kingston Range Wilderness Study Area, San Bernardino Administrative report to the U.S. Geological Survey County, California: U.S. Geological Survey Bulletin Office of Mineral Resources, 130 p., 3 appendices, 39 1709-D, 21 p. plates scale 1:250,000.

Calzia, J.P., Verosub, K.L., and Jachens, R.C., 1986, Tilting Conway, C.M., Hassemer, J.R., Knepper, D.H., Jr., Pitkin, and faulting of the Late Miocene Kingston Peak Granite, J.A., Jachens, R.C., and Chatman, M.L., 1990, Mineral southern Death Valley, California: American resources of the Wabayuma Peak Wilderness Study Area, Geophysical Union Transactions, v. 67, p. 1,189. Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-E, 52 p., scale 1:36,000. Cipar, J., Mangino, S., and D'AnaoIfo, S., 1990, Preliminary interpretation of the 1989 PACE seismic Conway, C.M., and Karlstrom, K.E., 1986, Early Proterozoic refraction/wide-angle reflection data from the Colorado geology of Arizona A workshop report: EOS, Plateau, Arizona: Seismological Research Letters, v. American Geophysical Union Transactions, v. 67, n. 61, n. 1, p. 39. 37, p. 681-682. Condie, K.C., Noll, P.O., Jr. and Conway, CM., in press, Geochemical and detnlal mode evidence for two .sources

46 Conway, C.M., and Karlstrom, K.E., in press. Early Mountains thrust, southeasternmost California: Journal Proterozoic geology of Arizona: Arizona Bureau of of Geophysical Research, v. 95, p. 19,953-19,971. Geology and Mineral Technology Fieldnote.s, v. 16. Dohrenwend, J.C., Jachens, R.C., Blakely, R.J., and Conway, CM., Karlstrom, K.E., Wrucke, C.T., and Silver, Moring, B.C., 1990, Subsurface geometry and L.T., 1987, Tectonic and magmatic contrasts across a stratigraphy of basins in the western Great Basin: two-province boundary in central Arizona, in Davis, Implications for the analysis of concealed mineral G.H., and VandenDolder, E.M., eds., Geologic diversity resources in Nevada: Geology and Ore deposits of the of Arizona and its margins: Excursions to choice areas: Great Basin: Geological Society of Nevada, Programs Arizona Bureau of Geology and Mineral Technology with Abstracts, p. 50. Special Paper 5, p. 158-175. Dohrenwend, J.C., Jachens, R.C, Blakely, R.J., Moring, Conway, C.M., Nealey, L.D., Thliveras, S., and Gonzales, B.C., and Menges, CM., 1989, Geological and D., 1987, Geologic and petrochemical affinities of geophysical analysis of the subsurface geometry of some Early Proterozoic suites in central Arizona: basins in the central and western Great Basin: Journal of the Arizona-Nevada Academy of Science, v. Implications for the analysis of concealed mineral 22, p. 49. resources in Nevada, in Fifth Annual V.E. McKelvey Forum, Reno, Nevada, January 24-26, 1989: U.S. Conway, C.M., and Silver, L.T., 1986, Early Proterozoic Geological Survey Circular 1035, p. 14. metallogenic provinces in Arizona: Geological Society of American Abstracts with Programs, v. 18, n. 5, p. Durrani, B.A., Doser, D.I., Keller, G.R., Roberts, D.G., and 348. Montana, C.J., 1991, Results for the PACE 1989 seismic line in northern Arizona: Colorado Plateau Conway, C.M., and Silver, L.T., 1986, Implications of the crustal structure: EOS, American Geophysical Union juxtaposition of two Early Proterozoic terranes in Transactions, v. 72, p. 327. central Arizona, in Van Schinus, W.R., ed.. International Field Conference on Proterozoic geology Elliott, G., Wooden, J.L., Miller, D.M., and Miller, R., and geochemistry: Lawrence, University of Kansas, p. 1986, Lower-granulite grade Early Proterozoic 91-92. supracrustal rocks, New York Mountains, SE California: Geological Society of America Abstracts with Conway, C.M., and Silver, L.T., 1989, Early Proterozoic Programs, v. 18, n. 5, p. 352. rocks (1710-1615-Ma) in central to southeastern Arizona, in Jenny, J.P., and Reynolds, S.J., eds.. England, P.C., and Wells, R.E., 1991, Neogene rotations and Geologic evolution of Arizona: Arizona Geological semi-continuous deformation of the Pacific Northwest Society Digest 17, p. 165-186. continental margin: Geology, v. 19, p. 978-981.

Conway, CM., Stewart, J.H., Wrucke, C.T., McKee, E.H., Evans, J.G., Shenrod, D.R., Hill, R.H., Jachens, R.C, and and Weir, G.W., 1986, Mesozoic and Cenozoic McDonnell, J.R., Jr., in press, Mineral resources of the conglomerates and unconformities in northeastern and Mojave Wash Wilderness Study Area, Mojave County, central Arizona: Implications for evolution of Arizona: U.S. Geological Survey Bulletin 1704-A. highlands to the southwest: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 348. Farber, D.L., Davis, M.S., Johnson, K.A., Young, E.D., Wooden, J.L., and Tosdal, R.M., 1989, Late Jurassic Conway, CM., and Wrucke, C.T., 1986, Prolerozoic bimodal alkalic plutonism and magma mixing in the geology of the Sierra Ancha-Tonto Basin-Mazatzal Mojave Desert region, southeast California: Geological Mountains area, road log and field guide: Arizona Society of America Abstracts with Programs, v. 21, n. Geological Society Digest, v. 16, p. 227-247. 6, p. A325-326.

D'Annolfo, S., Cipar, J., and Wolf, L., 1990, Long-range Farmer, G.L., Glazner, A.F., Hughes, W.T., Wooden, J.L., observations of PACE shots on the Colorado Plateau and Pickthorn, W., 1990, Mixing of basaltic magma cross-line observations: EOS, American Geophysical with mafic crust at Amboy and Pisgah craters, Mojave Union Transactions, v. 71, p. 1,594. Desert, California: EOS, American Geophysical Union Transactions, v. 71, p. 1,682. Dawson, P.B., lyer, H.M, and Evans, J.R., 1992, PACE: Inversion of teleseismic residuals from the USGS Farmer, G.L., Wilshire, H.G., Wooden, J.L., Glazner, A.F., teleseisniic experiment, Arizona. Seismology Research and Katz, M., 1991, Temporal variations in the sources Letters, v. 63, p. 39. of alkali basalts at the Cima volcanic field, SE California: Geological Society of America Abstracts Dawson, P.B., lyer, H.M., Evans, J.R., and Hitchcock, T., with Programs, v. 23, n. 2, p. 23. 1990, PACE: Teleseismic tomography along the Pacific-Arizona Crustal Transect, EOS, American Fitzgibbon, T.T., 1987, Technical Manual and Program Geophysical Union Transactions, v. 71, p. 1,564- Listing for REFORM: A rock-sample database program 1,565. in FORTRAN-77: U.S. Geological Survey Open-File Report 87-14IB, 81 p. DeWitt, Ed, Anderson, J.L., Barton, H.N., Jachens, R.C., Podwysocki, M.H., Bricky, D.W,, and Close, T.J., Fitzgibbon, T.T., 1987, User's manual for REFORM: A rock- 1989, Mineral Resources of the South McCuIlough sample database program in FORTRAN-77: U.S. Mountains Wilderness Study Area, Clark County, Geological Survey Open-File Report 87-141-A, 67 p. Nevada: U.S. Geological Survey Bulletin 1730-C. Fitzgibbon, T.T., 1988, Tectonic significance and Dillon, J.D., Haxel, G.B., and Tosdal. R.M., 1990, Structural characteristics of Middle Proterozoic diabase sheets, evidence for northeastward movement on the Chocolate eastern Mojave Desert region, California and Arizona:

47 Geological Society of America Abstracts with Gtazner, A.F., Nielson, J.E., Howard, K.A., and Miller, Programs, v. 20, n. 3, p. 160. D.M., 1986, Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California Fitzgibbon, T.T., and Howard, K.A., 1987, Tectonic- and Arizona, in Guidebook and Volume Trips 5 and 6~ significance of Middle Proterozoic diabase sheets in Cenozoic stratigraphy, structure, and mineralization in southeastern California and Arizona: Geological the Mojave Desert, Geological Society of America Society of America Abstracts with Programs, v. 19, n. Cordilleran Section 82nd Annual Meeting, Los Angeles, 6, p. 377. CA, March 25-28, 1986, p. 65-68.

Fletcher,* J.M., Karlstrom, K.E., Ring, T.E., Wooden, J.L., Gllazner, A.F., Nielson, J.E., Howard, K.A., and Miller, and Foster, D.A., 1988, Tectonic style and timing of D.M., 1986, Correlation of the Peach Springs Tuff, a deep-seated Mesozoic crustal shortening: Piute large-volume Miocene ignimbrite sheet in California Mountains, eastern Mojave Desert: Geological Society and Arizona: Geology, v. 14, n. 10, p. 840-843. of America Abstracts with Programs, v. 20, n. 7, p. A272. Gleason, J.D., Miller, C.F., and Wooden, J.L., 1988, Barrel Spring alkalic complex: 1.4 Ga anorogenic plutonism Foster, D.A., Harrison, T.M., Miller, C.F., and Howard, in the Old Woman-Piute Range, eastern Mojave Desert, K.A., 1990, The 40Ar/39 Ar thermochronology of the California: Geological Society of America Abstracts eastern Mojave Desert, California, and adjacent Arizona with Programs, v. 20, n. 3, p. 164. with implications for the evolution of melamorphic core complexes: Journal of Geophysical Research, v. Goodwin, E.B., 1990, Composition of the lower crust in 95, p. 20,005-20,024. West-Central Arizona from three-component seismic data: Journal of Geophysical Research, v. 95, p. Foster, D.A., Harrison, T.M., Miller, C.F., Howard, K.A., 20,097-20,109. and John, B.E., 1988, Mesozoic and Cenozoic thermal history of the eastern Mojave Desert, California: Goodwin, E.B., and McCarthy, Jill, 1990, Composition of the lower crust in west central Arizona from three- Insights from Ar/ Ar geochronology: Geological component seismic data: Journal of Geophysical Society of America Abstracts with Programs, v. 20, n. 7, p. A71. Research, v. 95, p. 20,097-20,110. Grtodwin, E.B., Thompson, G.A., and Okaya, D.A., 1989, Frost, E.G., Okaya, D.A., McEvilly, T.V., Hauser, E.C., Seismic identification of basement reflectors: the Galvan, G.S., McCarthy, J., Fuis, G.S., Conway, C.M., ! Bagdad reflection sequence in the Basin and Range- Blom, R.G., and Heidrick, T.L., 1987, Crustal transect: Colorado Plateau-detachment terrane-Salton Trough, /"// Colorado Plateau Transition Zone: Tectonics, v. 8, p. Davis, G.H., and VandenDolder, E.M., eds., Geologic 821-831. diversity of Arizona and its margins: Excursions to Goodwin, L.G., and Haxel, G.B., 1990, Structural evolution choice areas: Arizona Bureau of Geology and Mineral of the southern Baboquivari Mountains, south-central Technology Special Paper 5, p. 398-422. Arizona and north-central Sonora: Tectonics: v. 9, p. Fryxell, J.E., Richard, S.M., Sutler, J.F., and Lucchitta, Ivo, 1,077-1,095. 1987, Contrasting 40Ar/39Ar thermochronology of Grjay, Floyd, Jachens, R.C., Miller, R.J., Knepper, D.H., minerals from lower plate rocks of the Buckskin- Pit kin, J.A., Keith, W.J., Mariano, John, and Korzeb, Bullard-Eagle Eye detachment fault system, west-central S.L., 1990, Mineral resources of the Warm Springs Arizona: Geological Society of America Abstracts with Programs, v. 19, p. 670. Wilderness Study Area, Mohave County, Arizona: U.S. Geological Survey Bulletin 1737-F, 53 p. Fuis, G.S., McCarthy, J., and Howard, K.A., 1986, A Gray, Floyd, Jachens, R.C., Miller, R.J., and Mariano, John, seismic-refraction survey of the Whipple Mountains 1987, An interpretation of the shallow crustal structure metamorphic core complex, southeastern California: A of the Black Mountains, northwest Arizona: computer progress report from PACE: Geological Society of generated modeling and structural compilation: America Abstracts with Programs, v. 18, n. 5, p. 356. Geological Society of America with Programs, v. 19, p. Fuis, G.S., Walter, A.W., Mooney, W.D., and McCarthy, J., 682. 1986, Crustal velocity of the Salton Trough, western Mojave Desert, and Colorado Desert, from seismic Gray, Floyd, Miller, R.J., Grubensky, M.J., Tosdal, R.M., refraction: Geological Society of America Abstracts Haxel, G.B., Peterson, D.W., May, D.J., and Silver, with Programs, v. 18, n. 2, p. 107. L.T., 1987, Geologic map of the Ajo and Lukeville 1° by 2° quadrangles, southwestern Arizona: U.S. Gerber, M.E., Miller, C.F., Wooden, J.L., and Foster, D.A., Geological Survey Open-File Report 87-0347, scale 1991, Plutonism at the eastern edge of the Cordilleran 1:250,000, 23 p. Jurassic magmatic belt, Mojave Desert, California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A249. Griay, Floyd, Tosdal, R.M., Peterson, J.A., Cox, D.P., Miller, R.J., Klein, D.P., Theobald, P.K., Haxel, G.B., Glazner, A.F., Farmer, G.L., Hughes, W.T., Wooden, J.L., Grubensky, M.J., Raines, G., Barton, H.N., Singer, and Pickthorn, W., 1991, Contamination of basaltic D.A., and Eppinger, R.G., in press, The Conterminous magmas by mafic crust at Amboy and Pi.sgah Craters, United States Mineral Assessment Program: Mojave Desert, California: Journal of Geophysical Background information to accompany folio of Research, v. 96, p. 13,673-13,691. geologic, geochemical, geophysical, and mineral resource maps of the Ajo-Lukeville 1° by 2° quadrangle, Arizona: U.S. Geological Survey Circular 1082.

48 Hamilton, W.B., 1988, Detachment faulting in the Death Valley region, California and Nevada: U.S. Geological Greene, R.C., Eppinger, R.G., Hasseiuer, J.R., Jachens, R.C., Lawson, W.A., and Ryan, G.S., 1989, Mineral Survey Bulletin 1790, p. 51-85. resources of die Mount Wilson Wilderness Study Area, Mohave County, Arizona: U.S. Geological Survey Hamilton, W.B., 1988, Laramide crustal shortening: Bulletin 1737-A, 18 p. Geological Society of America Memoir 171, p. 27-39.

Greene, R.C., Turner, R.L., Jadier.s, R.C., Lawson, W.A., Hamilton, W.B., 1988, Tectonic setting and variations with and Almquist, C.L., 1989, Mineral resources of the depth of some Cretaceous and Cenozoic structural and Mount Tipton Wilderness Study Area, Mohave County, magmatic systems of the western United States, in Arizona: U.S. Geological Survey Bulletin 1737-B, 18 Ernst, W.G., ed., Metamorphism and crustal evolution P- of the western United States (Rubey volume): Englewood Cliffs, N.J., Prentice-Hall, p. 1-40. Greenwood, R.B., Morion, D.M., Jacliens, R.C., and Hamilton, W.B., 1989, Crustal geologic processes in the Chapman, R.H., 1991, Geology and geophysics of the United States: Geological Society of America Memoir Santa Ana 1:100,000 quadrangle, southern California: A progress report: Geological Society of America 172, p. 743-781. Abstracts with Programs, v. 23, n. 5, p. A478. Hamilton, W.B., and Howard, K.A., 1991, Detachment faults- Griscom, Andrew, and Jachens, R.C., 1990, Crustal and -steep active sectors are bounded by migrating hinges at lithospheric structure from gravity and magnetic both tops and bottoms: Geological Society of America studies, /'/; Wallace, R.E., ed.. The San Andreas faull Abstracts with Programs, v. 23, n. 5, p. A189-A190. system, California: U.S. Geological Survey Professional Paper 1515, p. 238-259. Hamilton, W.B., Tosdal, R.M., Stone, Paul, and Haxel, G.B., 1987, Mesozoic tectonics of southeastern California, in Griscom, Andrew, Jachens, R.C., Oliver, Howard W., and Davis, G.H., and VandenDolder, E.M., eds., Geologic Kleinkopf, M. Dean, 1988, Sulure-relaied gravity and diversity of Arizona and its margins: Excursions to magnetic expression of the three major batholiths in choice areas: Arizona Bureau of Geology and Mineral western United States: Geological Society of America Technology, Special Paper 5, p. 337-350. Abstracts with Programs, v. 20, n. 7, p. A400. Hammarstrom, J.M., 1992, Mineral chemistry of Cretaceous plutons: Hornblende geobarometry in southern Grubensky, M.J., Haxel, G.B., and Koch, R.D.. in press, California and southeastern Alaska: Geological Society Geologic map of the Caslle Dome Mountains, of America Abstracts with Programs, v. 24, n. 5, p. 30. southwestern Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-2138, Hammond, J.G., and Wooden, J.L., 1990, Isotopic scale 1:62,500. constraints on the petrogenesis of Proterozoic diabase in the southwestern U.S.A., in Parker, A.J., Rickwood, Gusa, Sharon, 1986, Recognition of the Peach Springs Tuff, P.C., and Tucker.D.H., editors, Mafic dykes and California and Arizona, using heavy-mineral suites: emplacement mechanisms: Proceedings of the Second U.S. Geological Survey Open-File Report 86-522, 11 p. International Dyke Conference, Adelaide, Australia, p. 145-156. Gusa, Sharon, Nielson, J.E., and Howard, K.A., 1987, Heavy- mineral suites confirm wide distribution of the Peach Hammond, J.G., and Wooden, J.L., 1990, Pb isotopic Springs Tuff, California and Arizona, USA: Journal of constraints on the origin of Proterozoic diabases of Volcanology and Geothermal Research, v. 33, p. 343- California and Arizona: Geological Society of America 347. Abstracts with Programs, v. 22, n. 3, p. 28.

Hamilton, W.B., 1985, Mode of extension of continental Hartman, K.A., and Johnson, R.A., 1990, Constraints on crust: Geological Society of London, Continental crustal structure in the Colorado Plateau: Results from Extension Tectonics Program with Abstracts, Abstract the Arizona PACE Piggyback Lithospheric Experiment 1. (APPLE): Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 28. Hamilton, W.B., 1986, Crustal evolution of California during Cretaceous and Cenozoic time: Geological Hartman, K.A., and Johnson, R.A., 1990, P- and S-Wave Society of America Abstracts with Programs, v. 18, p. velocities and Poisson's ratios beneath the Colorado 112. Plateau from recording of wide-angle seismic data: EOS, American Geophysical Union Transactions, v. 71, p. Hamilton, W.B., 1987, Crustal extension in the Basin and 1,564. Range province, southwestern United Stales, in Coward. M.P., Dewey, J.F.. and Hancock. P.L.. eds., Hau.ser, E.C., Gephart, J., Latham, T., Oliver, J., Kaufman, Continental extensional tectonics: Geological Society S., Brown, L., and Lucchitta, Ivo, 1987, COCORP of London Special Publication No. 28, p. 155-176. Arizona transect: strong crustal reflections and offset Moho beneath the Transition Zone: Geology, v. 15, p. Hamilton, W.B., 1987, Mesozoic geology and tectonics of 1,103-1,106. the Big Maria Mountains region, southeastern California: Arizona Geological Society Di»est 18, p. Haxel, G.B., 1987, Trace-element systematics of 33-47. peralumioous leucogranites, Baboqufvari Mountains chain, south-central Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 6, p. 388.

49 Haxel, G.B., 1989, Geochemistry of peraluiiiinous abstract, in Beatty, Barbara, and Wilkinson, P.A.K., eds., Frontiers in geology and ore deposits of Arizona leucogranites, south-central Arizona, in Continental magmatism abstracts, International Association of and the Southwest: Arizona Geological Society Digest Volcanology and Chemistry of the Earth's Interior, 16, p. 52-61. General Assembly, Santa Fe: New Mexico Bureau of Mines and Mineral Resources Bulletin 131, p. 124. Haxel, G.B., Tosdal, R.M., and Dillon, J.T., 1985, Tectonic setting and lithology of the Winterhaven Formation, a ! new Mesozoic stratigraphic unit in southeasternmost Haxel, G.B., Anderson, T.H., Riggs, N.R., and Goodwin, I California and southwestern Arizona: U.S. Geological L.G., 1988, The Papago terrane: A crustal anomaly in ' Survey Bulletin 1599, 19 p. south-central Arizona and north-central Sonora: Geological Society of America with Programs, v. 20, n. Hijxel, G.B., Tosdal, R.M., and Dillon, J.T., 1986, Field 3, p. 168. guide to the Chocolate Mountains thrust and Orocopia Schist, Gavilan Wash area, southeasternmost California, in Cenozoic stratigraphy, structure, and Haxel, G.B., Bagby, W.C., and Tosdal, R.M., 1987, Upper- mineralization in the Mojave Desert, Guidebook and crustal section through a Middle to Late Jurassic Volume, Trips 5 and 6, Geological Society of America, regional metamorphic and plutonic terrane, Kofa Cordilleran Section, Los Angeles, p. 127-138. Mountains, southwestern Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. Hendricks, J.D., and Plescia, J.B., 1986, Gravity survey of 697. the Prescott 2-degree sheet: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 361. Haxel, G.B., Briskey, J.A., May, D.J., Tosdal, R.M., and Wright, J.E., 1985, Reconnaissance petrochemistry of Hendricks, J.D., and Plescia, J.B., and Malic, A.K., 1991, Jurassic igneous rocks, Babotjufvari and Comobabi Complete Bouguer gravity map of the Bagdad 1/2° by Mountains area, southern Arizona: Geological Society 1° quadrangle, Arizona: U.S. Geological Survey Open- of America Abstracts with Programs, v. 17, p. 361. File Report 91-640, scale 1:100,000.

Haxel, G.B., Budahn, J.R., Fries, T.L., King, B.W., Taggart, Hillhouse, J.W., and Wells, R.E., 1986, Assessment of J.E., and White, L.D., 1986, Protolith geochemistry of rotations in the eastern Mojave Desert, California and the Orocopia and Pelona Schist, southern California: Arizona, from paleomagnetism of the Peach Springs Preliminary report: Geological Society of America Tuff: EOS, American Geophysical Union Transactions, Abstracts will) Programs, v. 18, n. 2, p. 115. v. 67, n. 44, p. 922.

Haxel, G.B., Budahn, J.R., Fries, T.L., King, B.W., While, Hillhouse, J.W., and Wells, R.E., 1989, Magnetic fabric and L.D., and Aruscavage, P.J., 1987, Geochemistry of the source area of the lower Miocene Peach Springs Tuff in Orocopia Schist, southeastern California: Summary, J'H California, Nevada, and Arizona: EOS, American Dickinson, W.R., and Klute, M.A., eds., Mesozoic Geophysical Union Transactions, v. 70, p. 1,067. rocks of southern Arizona and adjacent areas: Arizona Geological Society Digest, v. 18, p. 49-64. Hillhouse, J.W., and Wells, R.E., 1991, Magnetic fabric, flow directions, and source area of the lower Miocene Haxel, G.B., Jacobson, C.E., and Tosdal, R.M., 1988, Peach Springs Tuff in Arizona, California, and Nevada: Multiple low-angle faults atop the Orocopia Schist, Journal of Geophysical Research, v. 96, p. 12,443- southwestern Arizona and southeastern California: 12,460. Geological Society of America Abstracts with Programs, v. 20, n. 7, p. A383. Hoisch, T.D., and Hamilton, W.B., 1988, Latest Cretaceous crustal metamorphism in southeastern California by Haxel, G.B., Sirnmons, A.M., and McCarthy, J., 1990, fluids from subducted schist: Geological Society of Synextensional dioritic magmatism within and beneath America Abstracts with Programs, v. 20, n. 3, p. 169. metamorphic core complexes, southern Arizona and southeastern California: integration of structural, Hcjisch, T.D., and Hamilton, W.B., 1990, Granite generation petrologic, and PACE seismic refraction data: of fluid-induced anatexis: EOS, American Geophysical Geological Society of America Abstracts witli Union Transactions, v. 71, p. 694-696. Programs, v. 22, n. 3, p. 28-29. Hcrringa, E.D., 1989, Rocks and structural evolution of the Haxel, G.B., Simpson, R.W., and Howard, K.A., 1990, northern Kilbeck Hills, San Bernardino County, Introduction to Special Section on the California- California [M.S. thesis]: San Jose, California, San Jose Arizona Crustal Transect--Part II: Journal of State University, 180 p. Geophysical Research, v. 95, p.. 19,949-19,951. Howard, K.A., 1986, Evolution of crustal layering in southeastern California: Geological Society of America Haxel, G.B., Smith, D.B., Wliittington, C.L., Griscom, A., of Abstracts with Programs, v. 18, n. 2, p. 119. Diveley-White, D.V., Powell, R.E., and Kreidler, T.J., 1988, Mineral resources of the Orocopia Mountains Hcjward, K.A., 1991, Intrusion of horizontal dikes: Tectonic Wilderness Study Area, Riverside County. California: significance of Middle Proterozoic diabase sheets U.S. Geological Survey Bulletin I7IO-E, 22 p. widespread in the upper crust of the southwestern United States: Journal of Geophysical Research, v. 96, p. 12, Haxel, G.B., and Tosdal, R.M., 1986, Significance of the 461-12, 478. Orocopia Schist and Chocolate Mountains thrust in the late Mesozoic tectonic evolution of the southeastern Howard, K.A., in press, Cenozoic stratigraphy of the Lead California-southwestern Ari/.ona region: Extended Mountain and Valley Mountain areas, eastern Bullion

50 Mountains, southeastern California, in Slierrod, D.K., California, San Bernardino County Museum Special and Nielson, J.E., eds., Tertiary stratigraphy of some Publication 92-1, p. 37-47. highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin. Howard, K.A., Nakata, J.K., Pernokas, M.A., Marvin, R.F., and Miller, D.M., 1987, Mesozoic and Cenozoic Howard, K.A., and Alien, C.M., 1988, Geologic map of the heating, cooling, and uplift in SE California and southern part of the Dale Lake 15-minute quadrangle. adjacent Arizona: Evidence from K-Ar dating of San Bernardino and Riverside counties, California: U.S. crystalline rocks: Geological Society of America Geological Survey Open-File Report 88-538 (with Abstracts with Programs, v. 19, n. 7, p. 708. pamphlet), scale 1:62,500. Howard, K.A., Nielson, J.E., Nakata, J.K., and Wilshire, Howard, K.A., Bacheller, John, Fitzgibbon, T.T., Powell, H.G., 1990, Upended crustal slabs and low-angle R.E., and Alien, C.M., in review, Geologic map of the extensional faults in the Colorado River extensional Valley Mountain 15-ininute quadrangle, San Bernardino corridor: Geologic map of the Mojave Mountains area, and Riverside Counties, California: U.S. Geological western Arizona: Geological Society of America Survey Miscellaneous Investigations Map, scale Abstracts with programs, v. 22, n. 3, p. 30. 1:62,500. Howard, K.A., Nielson, J.E., Simpson, R.W., Hazlett, R.W., Howard, K.A., Christiansen, P.P., and John, B.E., in press, Alminas, H.V., Nakata, J.K., and McDonnell, J.R., Jr., Cenozoic stratigraphy of northern Chemehuevi Valley 1988, Mineral resources of the Turtle Mountains and flanking Stepladder Mountains and Sawtooth Wilderness Study Area, San Bernardino County, Range, southeastern California, in Slierrod, D.R., and California: U.S. Geological Survey Bulletin 1713-B, Nielson, J.E., eds., Tertiary stratigraphy of some 28 p. highly extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bullelin. Howard, K.A., Nielson, J.E., Wilshire, H.G., Nakata, J.K., Goodge, J.W., Reneau, S.L., John, B.E., and Hansen, Howard, K.A., and Harper, R.M., 1992, Bibliography of the V.L., 1990, Preliminary geologic map of the Mojave Pacific to Arizona Crustal Experiment (PACE)-- Mountains area, Mojave County, western Arizona: U.S. Investigation of a transect of the crust and lilhosphere Geological Survey Open-file report 90-684, scale across the southwestern United States: U.S. Geological 1:48,000. Survey Open-File Report 92-551-A,63 p. Howard, K.A., Nielson, J.E., Wilshire, H.G., Nakata, J.K., Howard, K.A., Horringa, E.D., Miller. D.M., and Stone, Paul, Goodge, J.W., Reneau, S.L., John, B.E., and Hansen, 1989, Geologic map of the eastern parts of the Cadiz V.L., in press, Geologic map of the Mohave Mountains Lake and Cadiz Valley 15-minule quadrangles, San area, Mohave County, western Arizona: U.S. Geological Bernardino and Riverside Counties, California: U.S. Survey Miscellaneous Investigations Map 1-2308, scale Geological Survey Miscellaneous Field Studies Map 1:48,000. MF-2086, scale 1:62,500. Howard, K.A., and the PACE team, 1986, PACE-The Pacific Howard, K.A., and John, B.E., 1987, Crustal extension along to Arizona Crustal Experiment: Geological Society of a rooted system of imbricate low-angle faults: Colorado America Abstracts with Programs, v. 18, n. 2, p. 362. River extensional corridor, California and Arizona, in Coward, M.P., Dewey, J.F., and Hancock, P.L., eds, Howard, K.A., Simpson, R.W., and Haxel, G.B., 1990, Continental extensional tectonics: Geological Society Introduction to Special section on the California- of London Special Publication No. 28. p. 299-311. Arizona crustal transect-Part I: Journal of Geophysical Research, v. 95, p. 461-462. Howard, K.A., and John, B.E., 1991, Disharmonic drape folds associated with upper-crustal extension in the Howard, K.A., Stone, Paul, and Miller, C.F., 1989, Geologic southern Basin and Range: Geological Society map of the Milligan 15-minute quadrangle, San Abstracts with Programs, v. 23. n. 2, p. 36. Bernardino County, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2072, scale Howard, K.A., John, B.E., and Miller, C.F., 1987, 1:62,500. Metamorphic core complexes, Mesozoic ductile thrusts, and Cenozoic detachments: Old Woman Mountains - Howie, J.M., 1991, Seismic Studies of Crustal Structure and Chemehuevi Mountains transect, California and Tectonic Evolution Across the Central California Arizona, in Davis, G.H., and Vandemlolder, E.M., eds., Margin and the Colorado Plateau [Ph.D. thesis]: Geologic diversity of Arizona and its margins: Stanford, California, Stanford University, 256 p. Excursions to choice areas: Arizona Bureau of Geology and Mineral Technology Special Paper 5, p. 365-382. Howie, J.M., Parsons, T., and Crews, G., 1989, Deep-crustal high-resolution reflection profiling across the edge of Howard, K.A., Kilburn, J.E., Simpson, R.W., Fiizgibbon, the Colorado Plateau: EOS, American Geophysical T.T., Detra. D.E., and Raines, G.L., 1987, Mineral Union Transactions, v. 70, p. 1,361. resources of the BristoI/Graaile Mountains Wilderness Study Area, San Bernardino County, California: U.S. Howie, J.M., Parsons, T., and Thompson, G.A., 1990, Full- Geological Survey Bulletin 1712-C. 18 p. wavefield analysis of lower crustal reflectivity at the SW margin of the Colorado Plateau, Arizona: EOS, Howard, K.A., and Miller, D.M., 1992, Lake Ceiiozok- American Geophysical Union Transactions, v. 71, p. faulting at the boundary between the Mojave and 1,563. Sonoran blocks: Bristol Lake area, California, //; Richard, S.M., ed., Deformation associated willi (lie Howie, J.M., Parsons, T., and Thompson, G.A., 1990, High- Neogene easiern California shear zone, southeastern resolution reflection imaging across the edge of the California and southwestern Arizona: Redlands,

51 Colorado Plateau, Arizona. USA: TERRA Ahs., v. 2, p. 174. John, B.E., 1987, Geometry and evolution of a mid-cnistal extensional fault system: Chemehuevi Mountains, Howie, J.M., Parsons, T., and Thompson, G.A., 1991, High- southeastern California, in Coward, M.P., Dewey, J.F., resolution P-. and S-wave deep crusfal imaging across the and Hancock, P.L., eds, Continental extensional edge of the Colorado Plateau, USA: Increased tectonics: Geological Society of London Special Paper. reflectivity caused by initiating extension, in Meissner, 28, p. 313-335. R., Brown, L., Durbaum, H-J., Franke, W., Fuchs, K., and Seifert, F., eds., Continental Lithosphere: Deep ohn, B.E., 1987, Structural reconstruction of the Seismic Reflections: American Geophysical Union Chemehuevi Mountains plutonic suite: Geometry of a Geodynamics Series, v. 22, p. 21-29. mid-crustal intermediate to silicic magma chamber: Geological Society of America Abstracts with Howie, J.M., Parsons, T., and Thompson, G.A., in review, Programs, v. 19, n. 7, p. 717-718. Composition as a control on localization of reflectivity in the middle crust: Deep seismic reflection results ohn, B.E., 1988, Structural reconstruction and zonation of a across the southwestern margin of the Colorado Plateau: tilted mid-crustal magma chamber: the felsic Journal of Geophysical Research, submitted. Qiemehuevi Mountains plutonic suite: Geology, v. 16, p. 613-617. Hussey, V.K., 1988, A comparison of shear wave velocity structures of the Colorado Plateau and the Basin and ohn, B.E., 1990, Extensional slivering and detachment of a Range: EOS, American Geophysical Union Late Cretaceous laccolith inflated ductile shear system: Transactions, v. 69, p. 404. Geologic map of die Chemehuevi Mountains core complex: Geological Society of America Abstracts with Hussey, V.K., 1989, A three-component seismic refraction Programs, v. 22, n. 3, p. 32. survey in northwestern Arizona [M.S. thesis]: Boston, Mass., Boston College, 161 p. John, B.E., 1991, Tilted plutons in the southern Basin and Range: Where and how?: Geological Society of Jachens, R.C., Btakety, R.J., and Moring, B.C., 1989, America Abstracts with Programs, v. 23, n. 2, p. 42. Analysis of concealed mineral resources in Nevada: constraints from gravity and magnetic studies, in Fifth John, B.E., and Foster, D.A., submitted, Structural and Annual V.E. McKelvey Forum, Reno, Nevada, January thermal constraints on the initiation angle of 24-26, 1989: U.S. Geological Survey Circular 1035, p. detachment faulting in the southern Basin Range: The 35-36. Chemehuevi Mountains case study: Geological Society of America Bulletin. Jachens, R.C., and Dixon, E.T., 1991, Aeromagnetic map of the Santa Ana 1:100,000 quadrangle, California: U.S. John, B.E., Foster, D.A., and Harrison, T.M., 1989, Ar/Ar Geological Survey Open-File Report 90-404, 15 p., 1 thermal history of the footwall to a low-angle normal sheet, scale 1:100,000. fault: constraints on fault initiation angles in the southern Basin and Range: Geological Society of Jachens, R.C., and Howard, K.A., 1992, Bristol Lake basin- London Symposium on the Geometry of Normal Faults. A deep sedimentary basin along the Bristol-Danby trough, Mojave Desert, in Reynolds, R.E., compiler, ihn, B.E., Hanna, W.F., Hassemer, J.R., Pitkin, J.A., and Old Routes to the Colorado: Redlands, CA, San Lane, M.E., 1988, Mineral resources of the Bernardino County Museum Special Publication. Chetnehuevi-Needles Wilderness Study area (AZ-050- 004), San Bernardino County, California: U.S. Jachens, R.C., and Moring, B.C., 1990, Maps of the Geological Survey Open-File Report 87-586, 17 p. thickness of Cenozoic deposits and the isoslalic residual gravity over basement for Nevada: U.S. John, B.E., and Howard, K.A., 1985, Brittle extension of the Geological Survey Open-File Report 90-404, 15 p., 2 continental crustal along a rooted system of low-angle sheets, scale 1:1.000,000. normal faults: Colorado River extensional corridor: Conference on heat and detachment in crustal extension Jachens, R.C., and Morion, D.M., 1991, Geophysical studies on continents and planets: Houston, Lunar and in the Southern California Area! Mapping Project Planetary Institute, Contribution n. 575, p. 58. (SCAMP): Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A476. John, B.E., Howard, K.A., and McCarthy, J., 1987, Geologic and geophysical evidence for the nature of upper and Jachens, R.C., Simpson, R.W., Griscom, Andrew, and mid-crustal continental extension in the Colorado River Mariano, John, 1986, Plutonic belts in southern area, California and Arizona: Geological Society of California defined by gravity and magnetic anomalies: America Abstracts with Programs, v. 19, n. 7, p. 717. Geological Society of America Abstracts with Programs, v. 18, p. 120. , B.E., and Mukasa, S.B., 1988, Structural and geochronologic (U/Pb) evidence for the nature of Jachens, R.C., Todd, V.R., Morion, D.M., and Griscom, Cretaceous plutonism and mylonitization in the Andrew, 1991, Constraints on the structural evolution Chemehuevi Mounlains core complex, soulheastern of the Peninsular Ranges batholith, California, from a California: Geological Sociely of America Abstracts new aeromagnetic map: Geological Society of America wiih Programs, v. 20, n. 7, p. A274. Abstracts wiili Programs, v. 23, n. 2, p. 38. John, B.E., and Mukasa, S.B., 1990, Footwall rocks to the John, B.E., 1987, Geologic map of the Chomeluievi mid-Tertiary Chemehuevi detachment fault: a window Mountains area, San Bernardino County, California, and into the Late Cretaceous middle crust: Journal of Mohave County, Arizona: U.S. Geological Survey Geophysical Research, vol. 95, p. 463-485. Open-File Report 87-666, scale 1:24.000.

52 John, B.E., and Wooden, J.L., 1990, Petrology and Klein, D.P., and Sneddon, R.A., 1987, Magnetotelluric data geochemistry of the metaluniinous to peraluminous across west central Arizona: U.S. Geological Survey Chemehuevi Mountains plutonic suite, southeastern Open-File Report 87-492, 18 p. California, in Anderson, J.L., ed., Tlie Nature and Origin of Cordilleran Maginatism, Geological Society of Kohler, W., and McCarthy, J., 1990, PACE seismic America Memoir 174, pages 71-98. reflection and wide-angle reflection studies of the Colorado Plateau - Basin and Range transition, Arizona: Johnson, R.A., and Harjpian, K.A., 1989, The Arizona EOS, American Geophysical Union Transactions, v. 71, PACE-Piggyback Lithospheric Experiment (APPLE): p. 1,593. Vertical-incidence to wide-angle reflection data from the Colorado Plateau: EOS, American Geophysical Union Kozak, R.C., Nealey, L.D., and Knight, R.J., 1987, Transactions, v. 70, p. 1,205. Geochemistry of late Tertiary volcanic rocks, Kirkland- Yarnell area, Arizona: Museum of Northern Arizona, Johnson, R.A., and Hartman. K.A., 1990, Constraints on P- Abstracts, Symposium on Southwestern Geology and and S-wave velocity structure in the Transition Zone of Paleontology, p. 11. the Colorado Plateau from multicomponenl wide-angle seismic data: TERRA Abs., v. 2, p. 173. Lachenbruch, A.H., Sass, J.H., Galanis, S.P., Jr., and Priest, S.S., 1991, Thermal regime of the southern Basin and Johnson, R.A., and Hartman, K.A.. 1991, P- and S-Wave Range, U.S.A., and its metamorphic-core complexes: reflectivity and crustal structure of the southern Geophysical Institute, Czechoslovakia Academy of Colorado Plateau: EOS, American Geophysical Union Sciences: International Meeting on Terrestrial Heat Transactions, v. 72, p. 324. Flow and the Structure of Lithosphere, Abstract Program. Johnson, R.A., and Hart man, K.A., 1991, Upper crustal Poisson's ratios in the Colorado Plateau, northern Larkin, S.P., McCarthy, J., and Fuis, G.S., 1988, Crustal Arizona, from multi-component wide-angle seismic structure of the Basin and Range/Colorado Plateau recording, in Meissner, R., Brown, L., Durbaum, H-J., transition zone in central Arizona: Preliminary results Franke, W., Fuchs, K., and Seifert, F., eds., Continental from seismic refraction: Seismological Research Lithosphere: Deep Seismic Reflections: American Letters, v. 59, p. 50. Geophysical Union Geodyiiamics Series, p. 323-328. Larkin, S.P., McCarthy, J., and Fuis, G.S., 1988, Data report Karlstrom, K.E., Bowring, S.A., and Conway, CM., 1987, for the PACE 1987 seismic refraction survey, west- Tectonic significance of an Early Prolerozoic two- central Arizona: U.S. Geological Survey Open-File province boundary in central Arizona: Geological Report 88-694, 95 p. Society of America Bulletin, v. 99, p. 529-538. Lucchilla, Ivo, 1986, A structural profile along the PACE Karlstrom, K.E., and Conway, C.M., 1986, Deformalioiial transect in Arizona: Geological Society of America styles and contrasting lilhostraligraphic sequences Abstracts witli Programs 1986, v. 18, n. 5, p. 392. within an Early Proterozoic orogenic bell, central Arizona, in Nations, J.D., Conway, C.N., and Swaim, Lucchitta, Ivo, 1986, Heat and detachment in core-complex G.A., eds., Geology of central and northern Arizona, extension Paper presented to the Conference on Heat Geological Society of America, Rocky Mountain and Detachment in Crustal Extension on Continents and Section, Field trip guidebook: Flagstaff: Northern Planets, Sedona, Arizona, October 10-12, 1985: Lunar Arizona University, p. 1-25. and Planetary Institute, p. 64-68.

Karlstrom, K.E., and Conway, C.M., 1986, Symposium Lucchitta, Ivo, 1986, Tertiary structural domains along the report: Early Proterozoic geology of Arizona: western margin of the Colorado Plateau in Arizona: Geology, vol. 14, p. 625-626. Geological Society of America Abstracts with Programs, 1986, v. 18, n. 5, p. 392. Kirby, S.C., Nielson, J.E., Noller, J.S., and Thompson, G.A., 1987, Geophysics and petrology of the deep crust Lucchitta, Ivo, 1987, The mouth of the Grand Canyon and and upper mantle: Workshop overview and .summary, in edge of the Colorado Plateau in the upper Lake Mead Noller, J.S., Kirby, S.C., Nielson-Pike, I.E., and area: Geological Society of America Centennial Field Thompson, G.A., Geophysics and Petrology of the Guide Rocky Mountain Section, p. 365-370. Deep Crust and Upper Mantle, A Workshop sponsored by the US Geological Survey and Stanford University, Lucchitta, Ivo, 1988, Geologic Map of the Planet 2 SE Volume of Extended Abstracts: U.S. Geological Survey quadrangle, Mojave and La Paz Counties, Arizona: U.S. Circular 956, 88 p. Geological Survey Open-File Map 88-547, scale 1:24,000. Klein, D.P., 1986, Magnetotelluric observations across the Colorado Plateau-Basin and Range transition zone, Lucchitta, Ivo, 1989, Extensional tectonism in the western Arizona, Geological Society of America southwestern United States: LPI Contribution, in Abstracts with Programs, v. 118, n. 5, p. 367. Shabner, G., convener, and others, Abstracts for the Venus geoscience tutorial and Venus geologic mapping Klein, D.P., 1991, Cruslal resistivity structure from workshop, 708, p. 31. magnetotelluric soundings in the Colorado Plateau- Basin and Range Provinces, central and western Lucchitta, Ivo, 1989, Overflight of the tectonic boundary Arizona: Journal of Geophysical Research, v. 96. p. between the Colorado Plateau and the Basin and Range 12,313-12,331. provinces: American Geophysical Union Field Trip Guidebook Tl 16/389 for 28th International Geological Congress, 21 pp.

53 Lucchitta, Ivo, 1990, Geologic Map of the Planet 2 NW of America Abstracts with Programs, v. 18, n. 2, p. quadrangle, Mojave County, Arizona: U.S. Geological 153. Survey Open-File report 89-673, scale 1:24,000. Mariano, John, and Grauch, V.J.S., 1988, Aeromagnetic Lucchitta, Ivo, 1990, Role of heal and detachment in maps of the Colorado River region including the continental extension as viewed from the eastern Basin [ KJngman, Needles, Salton Sea, and El Centre 1° x 2° and Range Province in Arizona in Lucchitta, Ivo, and I quadrangles, California, Arizona, and Nevada: U.S. Morgan, Paul, eds., Heat and detachment in continental Geological Survey Miscellaneous Field Studies Map extension: Tectonophysics, v. 174, p. 77-114. MF-2023, 3 sheets, scale 1:250,000.

Lucchitta, Ivo, 1991, Geologic Map of the Planet 2 SE Mariano, John, Helferty, M.G., and Gage, T.B., 1986, quadrangle, Mojave and La Paz Counties, Arizona: U.S. Bouguer and isostatic residual gravity maps of the Geological Survey Open-File report 91-354, 1:24,000. Colorado River region, including the King man, Needles, Salton Se, and El Centre Quadrangles: U.S. Lucchitta, Ivo, 1992, Dips and extension: Geological Geological Survey Open-File Report 86-347, 6 sheets, Society of America Abstracts with Programs, v. 24, n. scale 1:250,000, 1 sheet, scale 1:750,000. 5, p. 66. Miriano, John, Jachens, R.C., Blakely, R.J., 1986, Depth Lucchitta, Ivo, in press, Castanedn-Signal area, Arizona, in extent of exposed basement rock in the eastern Sherrod, D.R., and Nielson, J.E., eds.. Tertiary Transverse Ranges and adjacent Mojave Desert, stratigraphy of some highly extended lerranes. California: EOS, American Geophysical Union California, Arizona, and Nevada: U.S. Geological Transactions, v. 67, p. 1,212. Survey Bulletin. MctCaffrey, K.J.W., Howard, K.A., Bailey, CM., and Foster, Lucchitta, Ivo, in press, Foreword origin and motivation of D.A., 1991, Jurassic syntectonic pluton emplacement the volume, I'M Sherrod, D.R., and Nielson, J.E., eds., in the Clipper Mountains, eastern Mojave Desert, Tertiary stratigraphy of some highly extended terranes, California: Geological Society of America Abstracts California, Arizona and Nevada: U.S. Geological with Programs, v. 23, n. 5, p. 250. Survey Bulletin.

Lucchitta, Ivo, in press. Geologic Map of the Castaneda Hills McCaffrey, K.J.W., Miller, C.F., Howard, K.A., Karlstrom, quadrangle, Mojave County, Arizona: U.S. Geological K.E., and Simpson, C., 1991, Granitoid emplacement Survey Geologic Quadrangle Map GQ-1720, scale and deformation in the Old Woman Mountains, 1:24,000. southeastern California: Second Hutton Symposium on Granites and Related Rocks, September, Abstracts, Lucchitta, Ivo, in press, Geologic Map of the Castaneda Hills Bureau of Mineral Resources, Geology and Geophysics Southwest quadrangle, Mojave and La Paz Counties, Record 1991/25, p. 63. Arizona: U.S. Geological Survey Geologic Quadrangle Map GQ- , scale 1:24,000. McCarthy, J., Criley, E., and Kohler, W., 1989, PACE seismic refraction and wide-angle reflection data Lucchitta, Ivo, in press, Geologic Map of the Centennial recorded across the Colorado Plateau: EOS, American Wash quadrangle, Mojave and La Paz Counties, Arizona: Geophysical Union Transactions, v. 70, p. 1,205. U.S. Geological Survey Geologic Quadrangle Map GQ- 1718, scale 1:24,000. McCarthy, J., Fuis, G.S., and Howard, K.A., 1986, A seismic-refraction survey of the Whipple Mountains Lucchitta, Ivo, in press. Geologic Map of the Signal metamorpliic core complex, southeastern California: A quadrangle, Mojave County, Arizona: U.S. Geological progress report from PACE: Geological Society of Survey Geologic Quadrangle Map GQ-1709, scale America Abstracts with Programs, v. 18, n. 2, p. 155. 1:24,000. McCarthy, J., Fuis, G.S., Larkin, S.P., and Wilson, J.M., Lucchitta, Ivo, and Morgan, Paul, 1990, Heat and detachment 1989, Evidence for magmatic inflation of the crust in continental extension: Introduction, in Lucchitta, beneath metamorpliic core complexes in western Ivo, and Morgan, Paul, eds., Heal and Detachment in Arizona and southeastern California: Geological Continental Extension: Tectonophysics, v. 174, p. 3- Society of America Abstracts with Programs, v. 21, n. 5. 5, p. 113-114.

Lucchitta, Ivo, and Suneson, N.IL, 1988, Geologic Map of McCarthy. J., Fuis, G.S., and Wilson, J.M., 1986, Crustal the Artillery Peak NW quadrangle, Mojave County, structure of the Whipple Mountains metamorphic core Arizona: U.S. Geological Survey Open-file Map 85- complex: 2nd International Symposium on Deep 277, scale 1:24,000. Seismic Reflection Profiling of the Continental Lithosphere, Cambridge, U.K.: Abstracts of lectures Lucchilta, Ivo, and Young, R.A., 1986, Structure and and posters, p. 15. geomorphic character of western Colorado Plateau in the Grand Canyon-Lake Mead region, in Nations, J.D., McCarthy, J., Fuis, G.S., and Wilson, J.M., 1987, Crustal Conway, C.M., and Swarm, G.A., eds., 1986, Geology structure in the region of the Whipple Mountains of Central and Northern Arizona: Geological Society of melamorphic core complex, from seismic refraction America, Rocky Mountain Section, Field Trip results: Geological Society of America Abstracts with Guidebook, p. 159-176. Programs, v. 19, n. 7, p. 763.

Malin, P.E., and McCarthy, J., 1986, CALCKUST-PACE McCarthy, J., Fuis, G.S., Wilson, J.M., McKissick, C, and cooperative refraction study in die Wliipplc Mountains Larkin, S., 1987, PACE Seismic refraction and wide- region of southeastern California: Geological Society an"le reflection data recorded across the central Arizona

54 transition zone: EOS, American Geophysical Union Miller, C.F., Hanchar, J.M., Harrison, T.M., Wark, D.A., Transactions, v. 68, p. 1,359. Wooden, J.L., and Bennett, V.C., 1991, The granite- source connection: Narrowing the gap through study of McCarthy, J., Hajnal, Z., Howel, J., Johnson, R.A., Keller, lower crustal xenoliths and accessory minerals: EOS, G.R., and Wolf, L.W., 1990, PACE lilhospheric American Geophysical Union Transactions, v. 72, p. investigations of the Colorado Plateau: EOS. American 302. Geophysical Union Transactions, v. 71, n. 3, p. 1,563. Miller, C.F., Wooden, J.L., Bennett, V.C., Wright, I.E., McCarthy, J., and Kohler, W., 1990. Preliminary two- "Solomon, G.C., and Hurst, R.W., 1990, Petrogenesis of dimensional modeling of the cruslal structure across tlte tlte composite peraluminous-metaluminous Old Woman- Colorado Plateau - Basin and Range transition, Arizona: Piute Range batholith, southeastern California: EOS, American Geophysical Union Transactions, v. 71, Isotopic constraints, in Anderson, J.L., ed., Nature and p. 1,564. Origin of Cordilleran Magmatism: Geological Society of America Memoir 174, p. 99-110. McCarthy, J., Larkin, S.P., and Fuis, G.S., 1988, Cruslal structure of the Basin and Range Province and adjacent Miller, D.M, Miller, R.J., Nielson, I.E., Wilshire, H.G., Transition Zone in central Arizona, U.S.A., from Howard, K.A., and Stone, Paul, in press, Preliminary seismic refraction and wide-angle reflection profiling: geologic map of the East Mojave National Scenic Area: Australian Bureau of Mineral Resources, Implications California: U.S. Geological Survey Open-File Report for continental extension: Seismic Probing of 91-435, scale 1:100,000. Continents and Their Margins, p. 92. Miller, D.M., and Wooden, J.L., 1988, An Early Proterozoic McCarthy, J., Okaya, D.A., and Goodwin, E.B., 1990, batholithic belt in the northern New York Mountains Geophysical character of the middle and lower crust in area, California and Nevada: Geological Society of the southwestern U.S.: Results from seismic profiling: America Abstracts with Programs, v. 20, n. 3, p. 215- Geological Society of America Abstracts with 216. Programs, v. 22, n. 3, p. 65-66. Miller, J.M.G., and John, B.E., 1988, Detached strata in a McCarthy, J., Okaya, D.A., and Goodwin, E.B., 1990, Tertiary low-angle normal fault terrane, southeastern Seismic character of the middle and lower crust in the California: A sedimentary record of unroofing, southwestern United Slates: TERRA Abs., v. 2, p. 187. breaching and continued slip: Geology, v. 16, p. 645- 648. McCarthy, J., and Thompson, G.A., 1988, Seismic imaging of extended crust with emphasis on the western U.S.: Miller, J.M.G., and John, B.E., 1988, Tectonic and Geological Survey of America Bulletin, v. 100, p. paleogeographic implications of Miocene 1361-1374. sedimentation, Chemehuevi Mountains, eastern California: Geological Society of America Abstracts McCarthy, J., and Thompson, G.A., 1990, Reply to will) Programs, v. 20, n. 3, p. 216. comment on: "Seismic imaging of extended crust with emphasis on the western U.S.": Geological Society of Miller, J.M.G., and John, B.E., 1990, Sedimentation America Bulletin, v. 102, p. 255. patterns near an undulating detachment fault during continental extension, Chemehuevi Mountains, eastern McCarthy, J., and Thompson, G.A., 1990, Seismic imaging California: Abstracts of 13th International Sedimentary of extended crust with emphasis on the western U.S., in Congress, Nottingham, U.K., p. 359. Thomas, W.A., and Hatcher, R.D., Jr., eds., Geological Society of America Centennial Articles, Special Paper Miller, J.M.G., and John, B.E., in press, Tertiary stratigraphy 253, p. 263-276. of the Chemehuevi Mountains, southeastern California and western Arizona, in Sherrod, D.R., and Nielson, I.E., McCarthy, J., and Thompson, G.A., 1991, Reply to eds., Tertiary stratigraphy of some highly extended Comment on: "Seismic imaging of extended crust with terranes, California, Arizona, and Nevada: U.S. emphasis on the western U.S.": Geological Society of Geological Survey Bulletin. America Bulletin, v. 103, p. 1539-1542. Milliwede, S.K., Glazner, A.F., Nielson, J.E., Howard, K.A., McCarthy, Jill, Fuis, G.S., and Wilson, Jeff, 1987, Cruslal and Miller, D.M., 1987, Comment and reply on structure of the Whipple Mountains, .southeastern "Correlation of the Peach Springs Tuff, a large-volume California: a refraction study across a region of large Miocene ignimbrile sheet in California and Arizona": continental extension: Geophysical Journal Royal Geology, v. 15, p. 375. Astronomical Society, v. 89, p. 119-124. Montana, C., Keller, G.R., Doser, D.I., Baker, M.R., and McCarthy, Jill, Larkin, S.P., Fuis. G.S., Simpson, R.W., and Harder, S., 1990, The PACE 1989 seismic experiment: Howard, K.A., 1991, Anatomy of a meiamorphic core Initial results from the cross profile: EOS, American complex: Seismic refraction/wide-angle reflection Geophysical Union Transactions, v. 71, p. 1,594. profiling in southeastern California and western Arizona: Journal of Geophysical Research, v. 96, p. Morgan, Paul, and Sass, J.H., 1991, Thermal structure and 12.259-12,292. crustal processes in contrasting tectonic provinces of Arizona: Geological Society of America Abstracts with McGuire, A.V., Dyar, D., and Nielson, J.li., 1991, Programs, v. 23, n. 5, p. A23. Melasomalic oxidation of upper mantle peridotite. Contributions to Mineralogy and Petrology, v. 109, p. Morin, R.L, Mariano, John, and Jachens, R.C., 1990, 252-264. I.sustaiic residual gravity map of Edwards Air Force Base and vicinity, Kern, Los Angeles, and San Bernardino

55 Counties, California: U.S. Geological Survey Open- of Northern Arizona, Abstracts, Symposium on File Report 90-664, 1 sheet, scale 1:62,500. South western Geology and Paleontology, p. 7.

Morton, D.M., 1986, Contrasting plutons in the Peninsular Nealey, L.D., and Sheridan, M.F., 1989, Post-Laramide Ranges batholith: Geological Society of America volcanic rocks of Arizona and northern Sonora, Abstracts with Programs, v. 18, n. 2, p. 161. Mexico, and their inclusions, in Jenney, J.P., and I Reynolds, S.J., 1989, Geologic evolution of Arizona: Moyer. T.C., and Nealey, L.D., 1987, Regional geochemical Tucson, Arizona Geological Society Digest 17, p. 609- variations in Neogene bimodal rhyoliies, west-central 647. Arizona: Geological Society of America Abstracts with Programs, v. 19, n. 7, p. 780. Nealey, L.D., and Unruh, D.M., in press, Geochemistry and isotopic characteristics of deep cmstal xenoliths from Moyer, T.C., and Nealey, L.D., 1989, Regional Tule Tank, San Francisco field, northern Arizona: compositional variations of late Tertiary bimodal Arizona Geological Society. rhyolite lavas across the Basin and Range/Colorado Plateau boundary in western Arizona: Journal of Ndaley, L.D., Unruh, D.M., Knight, R.J., and King, B.W., Geophysical Research, v. 94, p. 7,799-7,816. 1990, Geochemistry of deep crustal xenoliths from the southern Colorado Plateau, northern Arizona: Mukasa, S.B., Shervais, J.W., Wilshire, H.G., and Nielson, Geological Society of America Abstracts with I.E., 1987, Isotopic variations in the upper mantle: Programs, v. 22, n. 3, p. 72. The Lherz alpine peridotile massif as an example: EOS, American Geophysical Union Transactions, v. 68, p. Nealey, L.D., Ward, A.W., Bartel, A.J., Vivit, D.V., and 1,552. Knight, R.J., 1986, Petrochemistry of the Motion Mountains volcanic field, Arizona: U.S. Geological Mukasa, S.B., Shervais, J.W., Wilshire, H.G., and Nielson. Survey Open-File Report 86-423, 31 p. I.E., 1990, Upper mantle Nd-Pb- and Sr-isotopic heterogeneities exhibited by alpine peridotite massifs Nealey, L.D., Ward, A.W., Bartel, A.J., Vivit, D.V., and at Lherz and Balmuccia: International Workshop on Knight, R.J., 1987, Evolution and composition of post- Orogenic Lherzoliies and Mantle Processes. 40-Ma volcanic rocks in Arizona: EOS, American Geophysical Union Transactions, v. 68, p. 1,532. Mukasa, S.B., Wilshire, H.G., Nielson, I.E., and Shervais, J.W., in press. Intrinsic Nd, Pb and Sr isotopic Nealey, L.D., Ward, A.W., Bartel, A.J., Vivit, D.V., and heterogeneities exhibited by the Lherz alpine peridotite Knight, R.J., 1987, Petrochemistry of rocks from the massif, French Pyrenees: Journal of Petrology. Mohon Mountain volcanic field, Yavapai and Mohave Counties, Arizona: U.S. Geological Survey Open-file Murphy, G.P., Tosdal, R.M.. Wooden, J.L., Kent, J., report 86-423, 20 p. Vaughn, R.B., and Hayes, E.M., 1990, Chemical and isotopic character of Jurassic granitoids, Cargo Nqaley, L.D., Ward, A.W., Knight, R.J., Vivit, Davidon, and Muchcacho Mountains, SE California: Geological Kink, B.W., in press, Geochemistry of the Mohon Society of America Abstracts with Programs, v. 22, n. Mountains Volcanic Field, in Ward, A.W., and 3, p. 71. Hendricks, J.D., eds.. Geology and Geophysics of the Mohon Mountains volcanic field, west-central Arizona, Nakata, J.K., Pernokas, M.A., Howard, K.A., Nielson, J.E., U.S. Geological Survey Bulletin. and Shannon, J.R., 1990, K-Ar and fission-track ages (dates) of volcanic, intrusive, altered, and metamorphic Neialey, L.D., Ward, A.W., and Simmons, A.M., 1986, rocks in the Mojave Mountains area, west-central Bimodal volcanism in the Mohon Mountains volcanic Arizona: IsochronAVesl, n. 56, p. 8-20. field, west-central Arizona: Geological Society of America Abstracts with Programs, v. 18, n. 5, p. 398. Nations, J.D., Conway, C.M., and Swann, G.A., eds., 1986, Geology of central and northern Arizona, Geological Nielson, J.E., 1986, Chemical relationships between mantle Society of America, Rocky Mountain Section, Field trip hornblendite, pyroxenite, and high-pressure guidebook: Northern Arizona University, Flagstaff. megacrysts. Dish Hill, California: Geological Society of America Abstracts with Programs, v. 18, p. 164. Nealey, L.D., 1986, Chemical characlerislics of Tertiary volcanic rocks in central and west-central Arizona: Ni;lson, J.E., 1986, Mantle magmatic events indicated by Geological Society of America Abstracts with zoned olivine and pyroxene compositional variations Programs, v. 18, n. 5, p. 398. in a composite mantle xenolith from Lashaine Volcano, Tanzania: 4th International Kimberlite Conference, Nealey, L.D., Conway, C.M., and Thliveras, S., 1987, Trace Extended abstracts volume, p. 297-289. element affinities of some Early Proterozoic suites in I central Arizona: Journal of the Arizona-Nevada Nielson, J.E., 1986, Miocene stratigraphy of the Mojave Academy of Science, v. 22, p. 48. Mountains, Arizona, and correlation with adjacent ranges, in Cenozoic stratigraphy, structure and Nealey, L.D., Holm, R.F., and Conway, M.F., 1986, mineralization in the Mojave Desert: Geological Petrology of the Mormon Mountain volcanic field, Society of America, Cordilleran Section, 82nd Ann. Coconino and Yavapai Counties, Ari7,ona: Museum of Mtg., Los Angeles, CA, March 25-28, 1986, Guidebook Northern Arizona, Symposium on Southwestern and Volume, Field Trip numbers 5 and 6, p. 15-24. Geology. Nielson, J.E., 1987, Evolution of the lower lithosphere near Nealey, L.D., and Kniglit, R.J., 1987, Trace-element the CA-AZ cruslal transect: Evidence from xenoliths: geochemistry of obsidian in the Mount l;loyd volcanic Geological Society of America Abstracts with field, Arizona Archaeological implications: Museum Programs, v. 19, p. 789.

56 Nielson-Pike, J.E., 1987, Character of the lower lithosphere: Nielson, J.E., 1989, Nature and sequence of mantle luagmatic Composition: U.S. Geological Survey Circular 956, p. events indicated by compositional variations in a 9-12. composite xenolitli from Lasliaine Volcano, Tanzania, in Ross, J., Jaques, A.L., Ferguson, J., Green, D.H., Noller J.S., 1986, Solid and fluid inclusions in mantle O'Reilly, S.Y., Dancliin, R.V., and Janse, A.J.A., eds., xenolilhs: An analytical dilemma: Geology, v. 14, p. Kimberlite and Related Rocks, v. 2, Geological Society 437-440. of Australia Special Publication 14, p. 700-708. Orell, S.E., Anderson, J.L., Wooden, J.L., and Wright, J.E., Nielson, J.E., and Beratan, K.K., 1988, Time of detachment 1987, Proterozoic crustal evolution of the lower faulting from Miocene sequences, Colorado River Colorado River region: Rear-arc orogenesis to extended terrane: Geological Society of America anorogenic crustal remobilization: Geological Society Abstracts with Programs, v. 20. n. 7, p. A393. of America Abstracts with Programs, v. 19, p. 795.

Nielson, J.E., and Beratan, K.K., 1990, Tertiary basin Parsons, T., Howie, J.M., and Thompson, G.A., 1990, Full- development and tectonic implications, Whipple wavefield imaging of the Colorado Plateau: Geological detachment system, Colorado River exlensiunal Society of America Abstracts with Programs, v. 22, n. corridor, California and Arizona: Journal of 7, p. A205. Geophysical Research, v. 95, p. 599-614. Parsons, T., Howie, J.M., and Thompson, G.A., 1990, Nielson, J.E., Budahn, J.R., and Wilshire, H.G., 1987, Fluid- Imaging the initial stages of extension at the edge of wallrock interactions in the mantle: Evidence from the Colorado Plateau, Chino Valley, Arizona: EOS, composite Iherzolite-hornblendite xenoliths, U.S. American Geophysical Union Transactions, v. 71, p. Geological Survey Circular 956, p. 86-88. 1,563.

Nielson, J.E., Frisken, J.G.. Jachens, R.C., and McDonnell, Parsons, T., Howie, J.M., and Thompson, G.A., in press, J.R., Jr., 1987, Mineral resources of the Forl Piule Seismic constraints on the nature of lower crustal Wilderness Study Area, San Bernardino County, reflectors beneath the extending southern Transition California: U.S. Geological Survey Bulletin I7I3-C, Zone of the Colorado Plateau, Arizona: Journal of 12 p. Geophysical Research.

Nielson, J.E., Glazner, A.F., and Lux, D.R., 1988, Problems Parsons, T., McCarthy, J., Howie, J.M., and Thompson, of dating the Peach Springs Tuff: Geological Society of G.A., 1990, Full-wavefield imaging of the Colorado America Abstract.1; willi Programs, v. 20, n. 3, p. 218. Plateau, Arizona, USA: TERRA Abs., p. 203.

Nielson, J.E., Howard, K.A. and Glazner, A.F.. in press, Plescia, J.B., and Hendricks, J.D., 1987, Gravity Introduction to the area south of 1-40 and north of 1-10, observations across the Colorado Plateau-Basin and California and Arizona, /'// Sherrod, D.R., and Nielson, Range transition zone of Arizona: Geological Society J.E., eds., Tertiary stratigraphy of some highly of America Abstracts with Programs, v. 19, p. 807. extended terranes, California, Arizona, and Nevada: U.S. Geological Survey Bulletin. Powell, R.E., 1986, Mesozoic and early Cenozoic fan folding in the Transverse Ranges: A window into the evolution Nielson, J.E., Lux, D.R., Dalrymple. G.B., and Glazner, of crustal structure in southern California: Geological 1990, A.F., Age of the Peach Springs Tuff, southeastern Society of America Abstracts with Programs, v. 18, n. California and western Arizona: Journal of Geophysical 2, p. 172. Research, v. 95, p. 571-580. Powell, R.E., 1986, Palinspastic reconstruction of Nielson, J.E., Miller, D.M., and Thompson, S.M., 1986, crystalline-rock assemblages in southern California: Source of the Peach Springs Tuff: North of Kinginan, San Andreas fault as part of an evolving system of late Arizona?: Geological Society of America Abstracts Cenozoic conjugate strike-slip faults: Geological with Programs, v. 18, p. 164. Society of America Abstracts with Programs, v. 18, n. 2, p. 172. Nielson, J.E., and Noller, J.S., 1987, Processes of mantle metasomatism, in Morris, E.M., and Pasleris, J.D.. Powell, R.E., in press, Balanced palinspastic reconstruction eds., Mantle Metasomatism ami alkaline magmatism: of pre-Iate Cenozoic paleogeology, southern Geological Society of America Special Paper 215, p. California: Geologic and kinematic constraints on 61-76. evolution of the San Andreas fault system, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Nielson, J.E., and Turner, R.D., 1986, Miocene rocks of the Andreas fault system: Displacement, palinspastic northern Turtle Mountains, San Bernardino County, reconstruction, and geologic evolution: Geological California, in Cenozoic stratigraphy, structure and Society of America Memoir 178. mineralization in Ihe Mojave Desert: Geological Society of America, Cordilleran Section, 82nd Ann. Powell, R.E., in press, Foreword, in Powell, R.E., Weldon, Mtg., Los Angeles, CA, March 25-28, 1986, Guidebook R.J., II, and Matti, J.C., eds., The San Andreas fault and Volume, Field Trip numbers 5 and 6, p. 25-32. system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Nielson, J.E., Wilslure, II.G., Meyer, C., Shervais, J., and Memoir 178. Mukasa, S., 1990, Fractionated dikes, Lherz massif, southern France: International Workshop on Orogenic Reynolds, S.J., Richard, S.M., Haxel, G.B., Tosdal, R.M., Lherzolites ami Mantle Processes. and Laubach, S.E., 1988, Geologic setting of Mesozoic and Cenozoic melamorphism in Arizona, in Ernst, W.G., ed., Melamoqilnsm and crustal evolution of the

57 western Uniled Slates (Rubey Volume 7): Englewood Cliffs, N.J., Prentice-Hall, p. 466-501. Sass, J.H., and Lachenbruch, A.H., 1987, Heat-flow field of the California-Arizona crustal experiment and adjacent Richard, S.M., and Haxel, G.B., 1991, Progressive areas: Geological Society of America Abstracts with exhumation of the Orocopia and Pelona Schists along a Programs, v. 19, n. 7, p. 829. composite normal fault system, southeastern California and southwestern Arizona: Geological Society of Serna. J., Warrick, R., Borcherdt, R., Dietel, C, Gibbs, J., America Abstracts with Programs, v. 23, n. 2, p. 92. and Maxwell, G., 1986, Instrumentation, in Wennerberg, L., ed.. Three-component digital velocity Richard, S.M., and Sherrod, D.R., in press. Introduction to and acceleration recordings made in conjunction with Tertiary Stratigraphy of the area south of 1-10, Arizona the PACE refraction experiment (November 1985): and California, in Sherrod, D.R., and Nielson, J.E., Open-File Report 86-387, p. 2-4. eds., Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Shaw, S.E., Cooper, J.A., O'Neil, J.R., Todd, V.R., and Geological Survey Bulletin. Wooden, J.L., 1986, Strontium, oxygen, and lead isotopic variations across a segment of the Peninsular Richard, S.M., Sherrod, D.R., and Tosdal, R.M., 1992, Ranges batholith, San Diego County, California: Cibola Pass fault, southwestern Arizona, in Richard, Geological Society of America Abstracts with S.M., ed., Deformation associated with the Neogene Programs, v. 18, p. 183. eastern California shear zone, southwestern Arizona and southeastern California: Redlands, Calif., San Sheridan, M.F., Nealey, L.D., and Dehn, J., 1986, Middle and Bernardino County Museum Special Publication, p. 66- Late Cenozoic volcanism in Arizona: Geological 70. Society of America Abstracts with Programs, v. 18, n. 5, p. 412. Ridley, W.I., Nielson, J.E., and Wilshire, H.G., 1988, Understanding lunar mantle metasomatism: The Shsrrod, D.R., 1988, Preliminary geologic map of the terrestrial mantle analogy: Workshop on Moon in Monkeys Head quadrangle, Mojave and La Paz Counties, transition: Apollo 14, KREEP, and evolved lunar rocks: Arizona: U.S. Geological Survey Open-File Report 88- Lunar and Planetary Institute, Nov. 14-16, 1988, 597 (with pamphlet), scale 1:24,000. Houston, Texas, p. 69-70. Slurrod, D.R., in press. New Water Mountains, Arizona, in Sherrod, D.R., and Nielson, J.E., eds., Tertiary Riggs, N.R., and Haxel, G.B., 1990, The Early to Middle stratigraphy of some highly extended terranes, Jurassic magmatic arc in southern Arizona: plutons to California, Arizona, and Nevada: U.S. Geological sand dunes, in Gehrels, G.E., and Spencer, J.E., eds., Survey Bulletin. Geologic excursions through the Sonoran Desert region, Arizona and Souora: Arizona Geological Survey Special Paper 7, p. 90-103. Sherrod, D.R., and Hughes, K.M., in press, Southern Trigo Mountains, Arizona, and eastern Chocolate Mountains, California: Picacho State Park area, in Sherrod, D.R., Riggs, N.R., Haxel, G.B., and Busby-Spera, C.J., 1990, and Nielson, J.E., eds., Tertiary stratigraphy of some Paleogeography and tectonic setting of the Jurassic highly extended terranes, California, Arizona, and magmatic arc in southern Arizona: progress and Nevada: U.S. Geological Survey Bulletin. problems: Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 78. Sherrod, D.R., and Koch, R.D., 1987, Structure and stratigraphy of Mesozoic sedimentary and volcanic Ruppert, S., 1990, Teleseismic shear-wave response of the rocks in the New Water Mountains, southwestern crust and upper mantle across the southwest margin of Arizona, in Dickinson, W.R. and Klute, M.A., eds., the Colorado Plateau, Arizona: EOS, American Mesozoic rocks of southern Arizona and adjacent parts: Geophysical Union Transactions, v. 71, p. 1,564. Arizona Geological Society Digest, v. 18, p. 81-90.

Ruppert, S., in prep.. Variations in shear-wave crustal Sherrod, D.R., Koch, R.D., and Grubensky, M.J., 1990, structure across the southern Basin & Range Colorado Geologic map of the Vicksburg quadrangle, La Paz Plateau transition zone: for Journal of Geophysical County, Arizona: U.S. Geological Survey Geologic Research. Quadrangle Map GQ-1684, scale 1:62,500.

Ruppert, S., in prep.. Variations in upper mantle anisotropy Sherrod. D.R., and Nielson, J.E., in press, Introduction and across the southern Basin A Range Colorado Plateau owner's manual, in Sherrod, D.R., and Nielson, J.E., transition zone: for Journal of Geophysical Research. eds.. Tertiary stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Saltus, R.W., Blakely, R.J.. Jachens, R.C., Siinpson, R.W., Geological Survey Bulletin. and Hildenbrand, T.G., 1991, Potential field constraints on Cordilleran tectonics: Geological Society of Sherrod, D.R., and Nielson, J.E., eds., in press, Tertiary America Abstracts with Programs, v. 23, n. 5, p. A22. stratigraphy of some highly extended terranes, California, Arizona, and Nevada: U.S. Geological Saltus, R.W., and Jachens, R.C., 1989, Basement gravity and Survey Bulletin. depth-to-basement maps of Arizona, Nevada, Utah, and SE California: EOS, American Geophysical Union Sherrod, D.R., Pickthorn, L.G., Tosdal, R.M., Grubensky, Transactions, v. 70, p. 1,361. M.J., and Koch, R.D., 1987, Major early Miocene extensional deformation in southwestern Arizona and Sass, J.H., Haxel, G.B., and Lucchitla, Ivo, 1988, CACTIS southeastern California: Geological Society of America meeting examines crustal transect: Arizona Geoloay, v. Abstracts with Programs, v. 19, p. 841. 18, p. 7.

58 Sherrod, D.R., Smith, D.B., Kleinkopf, M.D., and Gese, Smith, D.B., Berger, B.R., Tosdai, R.M., Sherrod, D.R., D.D., 1990, Mineral resources of the Kofa Unit 4 Raines, G.L., Griscom, A., Helferty, M.G., Rumsey, Northern Addition Wilderness Study Area (AZ-050-033), CM., and McMahan, A.B., 1987, Mineral Resources of Yuma County, Arizona: U.S. Geological Survey the Indian Pass and Picacho Peak Wilderness Study Bulletin 1702-K, 12 p. Areas, Imperial County, California: U.S. Geological Survey Bulletin 1711, 21 p. Sherrod, D.R., Smith, D.B., Koch, R.D., llanna. W.F., Pitkin, J.A., and Lane, M.E., 1989, Mineral resources Snavely, P.D., Jr., and Wells, R.E., in press, Cenozoic of the New Water Mountains Wilderness Study Area, La evolution of the continental margin of Oregon and Paz County, Arizona: U.S. Geological Survey Bulletin Washington, in Rogers, A., and others, eds., Earthquake 1702-B, 18 p. Hazards in the Pacific Northwest of the United States: U.S. Geological Survey Open-File Report 91-441B, 34 Sherrod, D.R., and Tosdai, R.M., 1991, Geologic setting and p., a chapter in U.S. Geological Survey Professional Tertiary structural evolution of southwestern Arizona Paper 1560. and southeastern California: Journal of Geophysical Research, v. 96, p. 12,407-12,423. Stewart, J.H., Anderson, T.H., Haxel, G.B., Silver, L.T., and Wright, J.E., 1986, Late Triassic paleogeography of the Sherrod, D.R., Tosdai, R.M., Vauglin, R.B., Smith, D.B., southern Cordillera: The problem of a source for Kleinkopf, M.D., and Wood, Robert H., II, 1990, voluminous volcanic detritus in the Chinle Formation Mineral resources of the Trigo Mountains Wilderness of the Colorado Plateau region: Geology, v. 14, p. 566- Study Area, La Paz County, Arizona: U.S. Geological 570. Survey Bulletin 1702-J, 16 p. Stone, Paul, 1987, Mesozoic tectonics of southeastern Silver, L.T., Conway, CM., and Ludwig, K.R., 1986, California, Day 2, morning: McCoy Mountains Implications of a precise chronology for Early Formation, McCoy Mountains, in Davis, G.H., and Proterozoic crustal evolution and caldera formation in VandenDolder, E.M., eds., Geologic diversity of the Tonlo Basin-Mazatzal Mountains region. Arizona: Arizona and its margins: Excursions to choice areas: Geological Society of America Abstracts with Arizona Bureau of Geology and Mineral Technology Programs, v. 18, p. 413. Special Paper 5, p. 342-344.

Simmons, A.M., and Haxel, G.B., 1991, Synexlensional Stone, Paul, 1990, Preliminary geologic map of the Blythe mafic dikes in nieiarnorpliic core complexes, southern 30' by 60' quadrangle, California and Arizona: U.S. Arizona: Samples of primitive or parental magma for Geological Survey Open-File Report 90-497, scale widespread middle Tertiary basaltic andesite volcanism 1:100,000. in the Southwest: Geological Society of America Abstracts with Programs, v. 23, n. 4, p. 94. Stone, Paul and Howard, K.A., 1986, Tectonic framework of the McCoy Mountains Formation Evidence from the Simmons, A.M., and Ward, A.W., 1992, Preliminary geologic Palen Mountains, southeast California: Geological map of the Mohon Mountains Volcanic Field, west- Society of America Abstracts with Programs, v. 18, n. central Arizona, U.S. Geological Survey Open-file map 2, p. 190. 92-198 (with pamphlet), scale 1:50,000. Stone, Paul, and Kelly, M.M., 1988, Preliminary geologic Simmons, A.M., Young, R.A., and Haxel, G.B., 1990, map of the Palen Pass quadrangle, Riverside County, Middle Tertiary volcanism in the northern Aquarius California: U.S. Geological Survey Open-File Report Mountains-upper Trout Creek area, west-central 88-503, scale 1:24,000. Arizona: Geological Society of America Abstracts witli Programs, v. 22, n. 3, p. 84. Stone, Paul, Page, V.M., Hamilton, W.B., and Howard, K.A., 1987, Cretaceous age of the upper part of the McCoy Simpson, Carol, Schweitzer, Janet, and Howard, K.A., 1991, Mountains Formation, southeastern California and A reinterpretaiion of the timing, position, and southwestern Arizona and its tectonic significance: significance of (he Sacramento Mountains detachment Reconciliation of paleobolanical and paleomagnetic fault, SE California: Geological Society of America evidence: Geology, v. 15, p. 561-564. Bulletin, v. 103, p. 751-761. Stone, Paul, and Pelka, G.J., 1989, Geologic map of the Simpson, R.W., Howard, K.A, and Haxel, G.B., 1991, Palen-McCoy Wilderness Study Area and vicinity, Introduction to Special Section on the California- Riverside County, California: U.S. Geological Survey Arizona Crustal Transect--Part III: Journal of Miscellaneous Field Studies Map MF-2092, scale Geophysical Research, v. 96. p. 12,257-12.258. 1:62,500.

Simpson, R.W., Howard, K.A., Jachens, R.C., and Mariano, Thompson, G.A., and McCarthy, J., 1986, A gravity J., 1990, A positive gravity anomaly along the constraint on the origin of highly extended terranes: Colorado River exlensional corridor: Evidence for new Geological Society of America Abstracts with crustal material: EOS, American Geophysical Union Programs, v. 18, p. 418. Transactions, v. 71, p. 1,594. Thompson, G.A., and McCarthy, J., 1990, A gravity Simpson, R.W., Jachens, R.C., Mariano, John, and Ilell'erly, constraint on the origin of highly extended terranes: M.G., 1986, Gravity and magnetic' studies of llie Tectonophysics, v. 174, p. 197-206. Colorado River region, California and Arizona: Geological Society of America Abstracts witli Todd. V.R., Gather, E., Lipton, D.A., Kilburn, J.E., Detra, Programs, v. 18. n. 5, p. 414. D.E., Gnscom, A., Knepper, D.H., Jr., and Kruse, F.A., 1987, Mineral resources of the Sawtooth Mountains and Carri/.o Gorge/Eastern McCain Valley Wilderness Study

59 Areas, San Diego County, California: U.S. Geological Mountains Wilderness Study Area, Las Paz and Mohave Survey Bulletin 1711-B, 15 p. Counties, Arizona: U.S. Geological Survey Bulletin 1701-G, 24 p. Todd, V.R., Detra, D.E., Kilburn, J.E., and Campbell, H.W., 1987, Mineral resources of the Fish Creek Mountains Tosdal, R.M., and Haxel, G.B., 1987, Late Jurassic regional Wilderness Study Area: Imperial County, California: metamorphism and deformation, southeastern U.S. Geological Survey Bulletin 1711-C, 14 p. California and southwestern Arizona: Geological Society of America Abstracts with Programs, v. 19, p. Todd, V.R., Girty, G.H., Shaw, S.E., and Jachens, R.C, 1991. 870-871. Geochemical, geochronologic, and structural characteristics of Jurassic plutonic rocks, Peninsular Tosdal, R.M., Haxel, G.B., Anderson, T.H., Connors, CD., Ranges, California: Geological Society of America May, D.J., and Wright, J.E., 1990, Highlights of Abstracts with Programs, v. 23, n. 5, p. A249. Jurassic, Late Cretaceous to early Tertiary, and middle Tertiary tectonics, south-central Arizona and north- Todd, V.R., Kilburn, J.E., Detra, D.E., and McHugh, E.L., central Sonora, in Gehrels, G.E., and Spencer, J.E., 1987, Mineral resources of the Jacumba/In-ko-pah eds., Geologic excursions through the Sonoran Desert Wilderness Study Area, Imperial County, California: region, Arizona and Sonora: Arizona Geological Survey U.S. Geological Survey Bulletin 1711-D, 18 p. Special Paper 7, p. 76-88.

Todd, V.R., Shaw, S.E., Girty, G.H., and Jachens, R.C., To&dal, R.M., Haxel, G.B., and Dillon, J.T., 1985, 1991, A probable Jurassic plutonic arc of continental Lithologic associations of gold deposits, southeastern affinity in the Peninsular Ranges batholith, southern California and southwestern Arizona: Geological California: Tectonic implications: Geological Society Society of America Abstracts with Programs, v. 17, p. of America Abstracts with Programs, v. 23, n. 2, p. 414. 104. Totdal, R.M., Haxel, G.B., and Dillon, J.T., 1986, Evidence Todd, V.R., Shaw, S.E., Jachens, R.C., Kimbrougli, D.L., and tectonic implications for northeastward movement Girty, G.H., and Hammarstrom, J.M., 1991, The El on the Chocolate Mountains thrust, southeast Cajon 30' x 60' quadrangle, southern California: A California: Geological Society of America Abstracts geologic history from early Mesozoic continental with Programs, v. 18, p. 193. growth to modern rift-transform tectonics: Geological Society of America Abstracts with Programs, v. 23, n. Tosdal, R.M., Haxel, G.B., and Wright, J.E., 1989, Jurassic 5, p. A479. geology of the Sonoran Desert region, southern Arizona, southeastern California, and northernmost Tosdal, R.M., 1986, Gneissic host rocks of gold Sonora: Construction of a continental-margin mineralization in the Picacho Mine, southeastern magmatic arc, in Jenney, J.P. and Reynolds, S.J., eds., Chocolate Mountains, southeastern California, in Geologic evolution of Arizona: Arizona Geological Cenozoic stratigraphy, structure, and mineralization in Society Digest 17, p. 397-434. the Mojave Desert: Geological Society of America Cordilleran Section, 82nd Annual Mtg., Los Angeles, Tosdal, R.M., and Stone, Paul, submitted, Stratigraphic CA, March 25-28, 1986, Guidebook and volume, Trips relations and U-Pb geochrpnology of the Late 5 and 6, p. 143-144. Cretaceous upper McCoy Mountains Formation, southwest Arizona: Geological Society of America Tosdal, R.M., 1986, Mesozoic ductile deformations in the Bulletin. southern Dome Rock Mountains, northern Trigo Mountains, Trigo Peaks, and Livingston Hills, Tosdal, R.M., and Willis, G.F., 1991, Formation and southwestern Arizona, and Mule Mountains, dismemberment of epithermal gold ore bodies during southeastern California, in Beatty, Barbara, and strike-slip faulting in the Mesquite mining district, Willcinson, Pamela, eds., Frontiers in geology and ore southeastern California, U.S.A.: Workshop on Ore deposits of Arizona and the Southwest: Arizona Forming processes, Lima, Peru, July 9-12, 1991. Geological Society Digest 16, p. 62-71. Tosdal, R.M., and Wooden, J.L., 1991, Middle Jurassic Tosdal, R.M., 1988, Late Cretaceous tectonics of the Blytlie- plutons, SE California and SW Arizona: Geological Quartzite region, SE California and SW Arizona: Society of America Abstracts with Programs, v. 23, n. Deformation within a oblique-slip orogene: Butte, 5, p. A308. Montana, 8th International Basement Tectonics meeting, p. 34. U.S. Geological Survey, 1990, Aeromagnetic map of parts of Tosdal, R.M., 1990, Jurassic low-angle ductile shear zones, the San Diego, Santa Ana, and adjacent 1° x 2° SE California and SW Arizona: Thrust faults, quadrangles, California: U.S. Geological Survey Open- extensional faults, or rotated high-angle faults?: File Report 90-206, 1 sheet, scale 1:250,00. Geological Society of America Abstracts with Programs, v. 22, n. 3, p. 89.

Tosdal, R.M., 1990, Tectonics of the Mule Mountains thrust system southeast California and southwest Arizona: Journal of Geophysical Research, v. 95, p. 20,035- 20,048.

Tosdal, R.M., Bryant, Brucc, Hill. R.H.. Haima, W.F., Knepper, D.H., Jr., Jones, S.I,.. Oliver, K.S., and Tuftin, S.E., 1990, Mineral resources of the Kawhide

60 U.S. Geological Survey (contributors: K.R. Bishop, CM. Miscellaneous Field Studies Map 2123, scale 1: Conway, J.C., Dolirenwend, J.S. Duval, G.B. Haxel, 24,000. J.H., Hendricks, C.A. Hodges, R.C. Jachens, M.J. Wells, R.E., 1989, Paleomagnetic rotations and the Kingston, D.L. Mangan, R.J. Miller, D.M. Miller, G.A. Cenozoic tectonics of the Cascade arc, Washington, Nowlan, M. Power, J.J. Rytuba, S.L. Sinipson, T.G. Oregon, and California, in Muffler, L.P.J., Blackwell, Tlieodore (editor), R.M. Tosdal), 1991, Evaluation of D.D., and Weaver, C.A., eds., Geological, Geophysical metallic mineral resources and their geologic controls and Tectonic setting of the Cascade Range: U.S. in the East Mojave National Scenic Area, San Bernardino County, California: U.S. Geological Survey Geological Survey Open-File Report 89-178 (Red Book) Open-File Report 91-427, 278 p., 6 plates. p. 1-16. Wells, R.E., 1990, Paleomagnetic rotations and the Ulrich, G.E., Condit, CD., Wenrich, K.J., Wolfe, E.W., Cenozoic tectonics of the Cascade Arc, Washington, Holm, R.F., Nealey, L.D., Conway, P.M., Aubele, J.C, Oregon, and California: Journal of Geophysical and Grumpier, L.S., 1989, Miocene to Holocene Research, v. 95, p. 19,409-19,417. volcanism and tectonism of the southern Colorado Plateau, Arizona: New Mexico Bureau of Mines and Wells, R.E., and England, P.C., 1988, Continuum model of Mineral Resources Memoir 46, p. 1-41. rotations recorded in Miocene flows of the Columbia River Basalt Group, Oregon and Washington: EOS, Unruh, D.M., Nealey, L.D., and Holm, R.F., 1988, Trace- American Geophysical Union Transactions, v. 69, p. element and isotopic constraints on the origin of the Mormon Mountain volcanic field, central Arizona: 1,456. Geological Society of America Abstracts with Wells, R.E., and Hillhouse, J.W., 1986, Paleomagnetism of Programs, v. 20, n. 3, p. 238. the Peach Springs Tuff and correlative outcrops from Barstow, California, to the Colorado Plateau: Unruh, D.M., Nealey, L.D., and Holm, R.F., in press. The Geological Society of America Abstracts with role of deep crust in the origin of upper Cenozoic volcanic rocks of northern Arizona chemical and Programs, v. 18, n. 5, p. 421. isotopic evidence from the Mormon Mountain volcanic field: Geology. Wells, R.E., and Hillhouse, J.W., 1987, Tectonic rotations in the Peach Springs Tuff, Colorado River extensional corridor, California and Arizona: Geological Society of Ward, A.W., and Nealey, L.D., 1990, Preliminary Geologic America Abstracts witli Programs, v. 29, p. 886. map of the Burro Mesa Quadrangle, Yavapai County, Arizona: USGS Open-file report 90-212; scale 1:24,000. Wells, R.E., and Hillhouse, J.W., 1989, Paleomagnetism and Ward, A.W., and Nealey, L.D., 1990, Preliminary Geologic tectonic rotation of the lower Miocene Peach Springs Tuff: Colorado Plateau to Barstow, California: map of the Pilot Knob Quadrangle, Yavapai and Mojave Geological Society of America Bulletin, v. 101, p. 846- Counties, Arizona: USGS Open-file report 90-26; scale 1:24,000. 863. Wells, R.E., and Simpson, R.W., 1987, More paleomagnetic Ward, A.W., Nealey, L.D., and Simmons, A.M., 1986, results from the Miocene Columbia River Basalt Group, Petrology of the Motion Mountains volcanic field, Oregon and Washington: Stratigraphic and tectonic north-central Arizona: a preliminary report: Arizona implications: Geological Society of America Abstracts Geological Society Digest 16. p. 501. with Programs, v. 19, p. 463. Ward, A.W., Nealey, L.D., and Ward, S.J., in press, Geology and petrology of the southern part of the Motion Wells, R.E., Simpson, R.W., Bentley, R.D., Beeson, M.H., Mountains Volcanic field, in Ward, A.W., and Hendricks, Mangan, M.T., and Wright, T.L., 1989, Correlation of J.D., eds., Geology and geophysics of the Motion Miocene flows of the Columbia River Basalt Group from Mountains volcanic field, west-central Arizona: U.S. the central Columbia River Plateau to the coast of Geological Survey Bulletin. Oregon and Washington, in Hooper, P., and Reidel, S., eds., Volcanism and tectonism in the Columbia River Weir, G.W., Ulrich, G.E., and Nealey, L.D., 1986, Geologic- flood basalt province, Geological Society of America map of the Sedona 30- x 60-minute quadrangle, Yavapai Special Paper 239, p. 113-130. and Coconino Counties, Arizona: U.S. Geological Survey Miscellaneous Investigations Map 1-1896, scale Wennerberg, L., 1986, ed., Three-component digital velocity 1:100,00. and acceleration recordings made in conjunction with the PACE refraction experiment (November 1985): U.S. Weir, G.W., Ulricli, G.E., and Nealey, L.D., 1986, Geological Survey Open-File Report 86-387. Preliminary geologic map of ilie Sedona 30 x 60' quadrangle, Yavapai and Coconino Counties, Arizona: Wennerberg, L., and Borcherdt, R., 1986, Calibration U.S. Geological Survey Open-File Report 86-164, scale spectra, in Wennerberg, L., ed., Three-component 1:100,000. digital velocity and acceleration recordings made in conjunction with the PACE refraction experiment Weir, G.W;, Ulrich, G.E.. and Nealey, L.D., in prep.. (November 1985): Open-File Report 86-387, p. 11. Geologic map of the Long Valley quadrangle, Coconiuo County, Arizona: U.S. Geological Survey Geologic- Wennerberg, L., Sembera, E., Borcherdt, R., Gibbs, J., Quadrangle Map, scale 1:24.000~ Dietel, C., Watson, J., and Cranswick, E., 1986, Velocity and acceleration time histories, in Weisman, M.K., and Weir, G.W., 1990, Geologic map of (lie Wennerberg, L., ed.. Three-component digital velocity Pine 7.5-miiuite quadrangle, Coconino and Gila and acceleration recordings made in conjunction with Counties, Ari/ona: U.S. Geological Survey ilie PACE refraction experiment (November 1985): U.S. Geological Survey Open-File Report 86-387, p. 9-10.

61 Wilshire, H.G., in press, Geology of the Marl Mountains 7.5' Willis, G.F., and Tosdal, R.M., 1991, Late Cenozoic quadrangle, San Bernardino Co., California: U.S. dismemberment of the late Cenozoic gold ore bodies in Geological Survey Open-File Report. the Mesquite Mining District, SE California: Geological Society of America Abstracts with Wilshire, H.G., Frisken, J.G., Jachens, R.C., Prose, D.V., Programs, v. 23, n. 5, p. A463. Rumsey, C.M., and McMahan, A.B., 1987, Mineral resources of the Cinder Cones Wilderness Study Area, Willis, G.F., and Tosdal, R.M., in press, Formation of gold San Bernardino, California: U.S. Geological Survey veins and breccias during dextral strike-slip faulting in Bulletin 1712-B, 13 p. the Mesquite Mining District, Southeastern California: Economic Geology. Wilshire, H.G., and Kirby, S.H., 1987, Brittle fracturing and related phenomena in the lower lithosphere: Geological Willis, G.F., Tosdal, R.M., and Manske, S.L., 1987, The Society of America Abstracts with Programs, v. 19, p. Mesquite mine, southeastern California: Epitliermal 464. gold mineralization in a strike-slip fault system: Geological Society of America Abstracts with W^ilsliire, H.G., and Kirby, S.H., 1988, Dikes, joints, and Programs, v. 19, p. 892. faults in the upper mantle: Tectonophysics, v. 161, p. 23-31. Willis, G.F., Tosdal, R.M., and Manske, S.L., 1989, Structural control on epithermal gold veins, and Wilshire, H.G., McGuire, A.V., Noller, J.S., and Turrin, breccias in the Mesquite District, southeastern B.D., 1991, Petrology of lower crustal and upper mantle California: U.S. Geological Survey Circular 1035, p. xenoliths from the Cima volcanic field, California: 78-79. Journal of Petrology, v. 32, p. 169-200.

Wilshire, H.G., 1987, A model of mantle metasomatism, in Wilshire, H.G., Meyer, C.E., Nakata, J.K., Calk, L.C., Morris, E.M. and Pasteris, J.D. (eds.), Mantle Shervais, J.W., Nielson, J.E., and Schwarzman, B.C., Metasomatism and Alkaline Magmaiism: Geological | 1988, Mafic and ultramafic xenoliths from volcanic Society of America Special Paper 215, p. 47-60. rocks of the western United States: U.S. Geological Survey Professional Paper 1443, 179 p. Wilshire, H.G., 1987, Character of the lower lilhosphere: Lithology, in Noller, J.S., Kirby, S.C., and Nielson, w|lshire, H.G., and Nielson, J.E., 1991, Differentiation of J.E., (eds.), Workshop: Geophysics and Petrology of basaltic intrusions in the mantle: Geological Society of the Deep Crust and Mantle: U.S. Geological Survey America Abstracts with Programs, v. 23, n. 5, p. A272. Circular 956, p. 6-8. , H.G., and Nielson-Pike, J.E., 1986, Upper-mantle Wilshire, H.G., 1987, Multistage generation of alkalic basalt xenoliths in alkaline basalt, Dish Hill, California: in the mantle: The Cima volcanic field, California: Geological Society of America Guidebook, Southern Geological Society of America Abstracts with California Field Trips, Mojave Desert Xenolith Suites, Programs, v. 19, p. 892. Malapai Hill and Dish Hill, p. 1-3.

Wilshire, H.G., 1988, Enrichment of lithospheric mantle in Wilshire, H.G., and Noller, J.S., 1986, Mantle/crust western United States extensional terranes: Geological xenoliths in hawaiite lavas: The Cima volcanic field, Society of America Abstracts with Programs, v. 20, n. California: Fourth International Kimberlite 7, p. A366. Conference, Extended Abstracts, Geological Society of Australia, Abstracts, n. 16, pt. 4, p. 355-357. Wilshire, H.G., 1988, Geology of the Cima volcanic field, San Bernardino County, California: Geological Society WJIson, J.M. and Fuis, G.S., 1987, Data report for the of America Field Trip Guidebook, This Extended Land: Chemehuevi, Vidal, and Dutch Flat lines, PACE, Geological Journeys in the Southern Basin and Range, I Seismic-Refraction Survey, southeastern California, and p. 210-213. western Arizona: U.S. Geological Survey Open-File Report 87-86, 75 p. Wilshire, H.G, 1988, Remelting of igneous and meta-igrieous rocks in the upper mantle: EOS, American Geophysical WJIson, J.M., Geist, E.L., Tosdal, R.M., Okaya, D., and Union Transactions, v. 69, p. 1,049. Frost, E., 1987, Crustal structure of the Chuckwalla Valley region, SE California, from industry seismic Wilshire, H.G., 1990, Lithology and evolution of the crust- profiles: EOS, American Geophysical Union mantle boundary region in the southwestern Basin and Transactions, v. 68, p. 1,360. Range Province: Journal of Geophysical Research, v. 95, p. 649-665. Wilson, J.M., McCarthy, J., and Johnson, R., 1988, Middle and lower crustal structure of the Whipple Mountain Wilshire, H.G., in press, Geology of the Cow Cove 7.5' metamorphic core complex: Geological Society of quadrangle, San Bernardino Co., California: U.S. America Abstracts with Programs, v. 20, n. 7, p. A355. Geological Survey Open-File Report. Wjlson, J.M., McCarthy, Jill, Johnson, R.A., and Howard, Wilshire, H.G., in press. Geology of the Granite Spring 7.5' K.A., 1991, An axial view of a metamorphic core quadrangle, San Bernardino Co., California: U.S. complex: Crustal structure of the Whipple and Geological Survey Open-File Report. Chemehuevi Mountains, southeastern California: Journal of Geophysical Research, v. 96, p. 12,293- Wilshire, H.G., in press, Geology of the Indian Spring 7.5' 12,312. quadrangle, San Bernanlino Co., California: U.S. Geological Survey Open-File Repori. If, L.W., and Cipar, J.J., 1991, A new crustal model of the Colorado Plateau: Results from the 1989 Pacific to

62 Arizona Crustal Experiment: EOS, American Geophysical Union Transact ions, v. 72, p. 327. Wooden, J.L., Stacey, J.S., Howard, K.A., Doe, B.R., and Miller, D.M., 1988, Pb isotopic evidence for the Wolf, L.W., and Cipar, J.J., in review, The Colorado Plateau: formation of Proterozoic crust in the southwestern Through thick and thin: Journal of Geophysical United States, in Ernst, W.G., ed., Metamorphism and Research. crustal evolution of the western United States (Rubey Volume 7) Englewood Cliffs, N.J., Prentice-Hall, p. 69- Wolf, L.W., Cipar, J.J.. and D'Annolfo, Susan, 1991, 86. Evaluation of cruslal models of the Colorado Plateau in view of 1989 PACE seismic refraction/wide-angle Wooden, J.L., Stacey, J.S.S., Howard, K.A., and Miller, reflection data: Geological Society of America D.M., 1986, Crustal evolution in southeastern Abstracts with Programs, v. 23, n. 4, p. 107. California: Constraints from Pb isotopic evidence: Geological Society of America Abstracts with Wolf, L., D'Annolfo, S., and Cipar, J., 1990, Crustal Programs, v. 18, n. 2, p. 200. structure across the Grand Canyon, Arizona, from PACE cross-line observations: EOS, American Geophysical Wooden, J.L., Stacey, S.S., Robinson, A.C., Kistler, R.A., Union Transactions, v. 71, p. 1,593. Tosdal, R.M., and Whitehouse, M.J., 1988, Pb isotope characteristics of Mesozoic intrusive magmatism along Wooden, J.L., and Aleinikoff, J.N., 1987, Pb isotopic the craton margin in the western U.S.: Butte, Montana, evidence for Early Proterozoic crustal evolution in the 8th International Conference on Basement Tectonics, p. southwestern U.S.: Geological Society of America 35. Abstracts with Programs, v. 19, p. 896. Wooden, J.L., and Tosdal, R.M., 1990, Common Pb isotopic Wooden, J.L., and Aleinikoff, J.N., 1991, Early Proterozoic evidence for sources of Mesozoic and Tertiary isotopic provinces in the southwestern U.S.: magmatism in SE California and SW Arizona: Geological Society of America Abstracts with Geological Society of America Abstracts with Programs, v. 23, n. 4, p. 107. Programs, v. 22, n. 3, p. 95.

Wooden, J.L., Bennetl, V.C., Hanchar, J.M., and Miller, Wright, J.E., Howard, K.A., and Anderson, J.L., 1987, C.F., 1990, Lower crustal xenoliths in Tertiary dikes. Isotopic systematics of zircons from Late Cretaceous Old Woman Mountains area, SE California: II. Pb, Nd, intrusive rocks, southeastern California: Implications and Sr isotopic data: Geological Society of America for a vertically stratified crustal column: Geological Abstracts with Programs, v. 22, 11. 3, p. 95. Society of America Abstracts with programs, v. 19, n. 7, p. 898. Wooden, J.L., Kistler, R.W., Robinson, A.C., Tosdal, R.M., and Wright, J.E., 1991, A comparison of isotopic Young, E.D., Farber, Daniel, Wooden, J.L., and Tosdal, signatures and Mesozoic and Tertiary plutonism in the R.M., 1991, Partial melting of subcontinental western U.S.: EOS, American Geophysical Union lithosphere as evidence for Jurassic intra-arc crustal Transactions, v. 72, n. 17, p. 302. extension, SE California: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A250. Wooden, J.L., and Miller, D.M., 1990, Chronologic and isotopic framework for Early Proterozoic crustal Young, E.D., and Wooden, J.L., 1988, Mid-crustal evolution in the eastern Mojave Desert Region, SE emplacement of Mesozoic granitoids, eastern Mojave California: Journal of Geophysical Research, v. 95, p. Desert: evidence from crystallization barometry: 20,133-20,146. Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 244. Wooden, J.L., and Miller, D.M., 1991, Early Prolerozoic geologic history of the Mojave crustal province: Young, E.D., and Wooden, J.L., 1989, Geochemical Geological Society of America Abstracts witli evolution of a middle crustal mafic plutonic complex, Programs, v. 23, n. 4, p. 108. southeastern California: EOS, American Geophysical Union Transactions, v. 70, p. 504. Wooden, J.L., Miller, D.M., and Elliott, G.. 1986, Early Proterozoic geology of the northern New York Young, E.D., Wooden, J.L., Shieh, Y-N, and Farber, D., in Mountains, SE California: Geological Society of press, Geochemical evolution of Jurassic diorites from America Abstracts with Programs, v. 18, n. 3, p. 424. the Bristol Lake region, California, U.S.A., and the role of assimilation: Contributions to Mineralogy and Wooden, J.L., Miller, D.M., and Howard, K.A., 1988. Early Petrology. Proterozoic chronology of the eastern Mojave Desert: Geological Society of America Abstracts with Programs, v. 20, n. 3, p. 243.

Wooden, J.L., Powell, R.E., Howard, K.A., and Tosdal, R.M., 1991, Eagle Mountains 30'x60' quadrangle, southern California: 11. Isotopic and chronologic studies: Geological Society of America Abstracts with Programs, v. 23, n. 5, p. A478.

Wooden, J.L., anil Slacey, J.S., 1987. Lead isolopic constraints on (lie origin of Cordilleran granitic niagmatism: Geological Society of America Abstracts with Programs, v. 19, p. 465.

63