Stratigraphic and Geochemical Evolution of the Glass Buttes Complex, Oregon
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Geologic Map of the Simcoe Mountains Volcanic Field, Main Central Segment, Yakama Nation, Washington by Wes Hildreth and Judy Fierstein
Prepared in Cooperation with the Water Resources Program of the Yakama Nation Geologic Map of the Simcoe Mountains Volcanic Field, Main Central Segment, Yakama Nation, Washington By Wes Hildreth and Judy Fierstein Pamphlet to accompany Scientific Investigations Map 3315 Photograph showing Mount Adams andesitic stratovolcano and Signal Peak mafic shield volcano viewed westward from near Mill Creek Guard Station. Low-relief rocky meadows and modest forested ridges marked by scattered cinder cones and shields are common landforms in Simcoe Mountains volcanic field. Mount Adams (elevation: 12,276 ft; 3,742 m) is centered 50 km west and 2.8 km higher than foreground meadow (elevation: 2,950 ft.; 900 m); its eruptions began ~520 ka, its upper cone was built in late Pleistocene, and several eruptions have taken place in the Holocene. Signal Peak (elevation: 5,100 ft; 1,555 m), 20 km west of camera, is one of largest and highest eruptive centers in Simcoe Mountains volcanic field; short-lived shield, built around 3.7 Ma, is seven times older than Mount Adams. 2015 U.S. Department of the Interior U.S. Geological Survey Contents Introductory Overview for Non-Geologists ...............................................................................................1 Introduction.....................................................................................................................................................2 Physiography, Environment, Boundary Surveys, and Access ......................................................6 Previous Geologic -
(2000), Voluminous Lava-Like Precursor to a Major Ash-Flow
Journal of Volcanology and Geothermal Research 98 (2000) 153–171 www.elsevier.nl/locate/jvolgeores Voluminous lava-like precursor to a major ash-flow tuff: low-column pyroclastic eruption of the Pagosa Peak Dacite, San Juan volcanic field, Colorado O. Bachmanna,*, M.A. Dungana, P.W. Lipmanb aSection des Sciences de la Terre de l’Universite´ de Gene`ve, 13, Rue des Maraıˆchers, 1211 Geneva 4, Switzerland bUS Geological Survey, 345 Middlefield Rd, Menlo Park, CA, USA Received 26 May 1999; received in revised form 8 November 1999; accepted 8 November 1999 Abstract The Pagosa Peak Dacite is an unusual pyroclastic deposit that immediately predated eruption of the enormous Fish Canyon Tuff (ϳ5000 km3) from the La Garita caldera at 28 Ma. The Pagosa Peak Dacite is thick (to 1 km), voluminous (Ͼ200 km3), and has a high aspect ratio (1:50) similar to those of silicic lava flows. It contains a high proportion (40–60%) of juvenile clasts (to 3–4 m) emplaced as viscous magma that was less vesiculated than typical pumice. Accidental lithic fragments are absent above the basal 5–10% of the unit. Thick densely welded proximal deposits flowed rheomorphically due to gravitational spreading, despite the very high viscosity of the crystal-rich magma, resulting in a macroscopic appearance similar to flow- layered silicic lava. Although it is a separate depositional unit, the Pagosa Peak Dacite is indistinguishable from the overlying Fish Canyon Tuff in bulk-rock chemistry, phenocryst compositions, and 40Ar/39Ar age. The unusual characteristics of this deposit are interpreted as consequences of eruption by low-column pyroclastic fountaining and lateral transport as dense, poorly inflated pyroclastic flows. -
Hazard Annex Earthquake
Hazard Annex Earthquake Northeast Oregon Multi-Jurisdictional Natural Hazard Mitigation Plan Page P-1 ISSN 0270-952X STATE OF OREGON OPEN-FILE REPORT 03-02 DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES Map of Selected Earthquakes for Oregon, VICKI S. McCONNELL, ACTING STATE GEOLOGIST Map of Selected Earthquakes for Oregon, 1841 through 2002 1841 through 2002 By Clark A. Niewendorp and Mark E. Neuhaus 2003 Astoria WASHINGTON IDAHO COLUMBIA 46° CLATSOP Saint Helens Pendleton Hood River WASHINGTON WALLOWA The Dalles UMATILLA TILLAMOOK Portland Hillsboro MULTNOMAH Moro HOOD GILLIAM Enterprise Tillamook RIVER Oregon City Heppner La Grande YAMHILL SHERMAN MORROW UNION McMinnville CLACKAMAS Condon WASCO Fossil 45° Dallas Salem MARION POLK WHEELER Baker Newport Albany BAKER JEFFERSON Madras LINCOLN Corvallis GRANT LINN BENTON Canyon City Prineville CROOK Eugene Bend Vale 44° LANE DESCHUTES Burns Magnitude 7 and higher HARNEY Coquille Roseburg Magnitude 6.0 - 6.9 COOS DOUGLAS Magnitude 5.0 - 5.9 MALHEUR Magnitude 4.0 - 4.9 LAKE Magnitude 3.0 - 3.9 Magnitude 1.0 - 2.9 KLAMATH Magnitude 0.0 - 0.9 Fault - Holocene JACKSON CURRY Fault - Late quaternary Grants Pass Gold Beach State line Medford JOSEPHINE County line Klamath Falls County seat Lakeview IDAHO NEVADA 42° CALIFORNIA NEVADA 126° 125° 124° 123° 122° 121° 120° 119° 118° 117° 116° WHAT DOES THE MAP SHOW? faults are defined as those that moved in the last 780,000 years. Faults active in the last 1993, Scotts Mills (near Silverton and Woodburn in Marion County, Oregon) earthquake Dougherty, M.L., and Trehu, A.M., 2002, Neogene deformation of the Mt. -
Tectonic Alteration of a Major Neogene River Drainage of the Basin and Range
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 2016 TECTONIC ALTERATION OF A MAJOR NEOGENE RIVER DRAINAGE OF THE BASIN AND RANGE Stuart D. Parker Follow this and additional works at: https://scholarworks.umt.edu/etd Part of the Tectonics and Structure Commons Let us know how access to this document benefits ou.y Recommended Citation Parker, Stuart D., "TECTONIC ALTERATION OF A MAJOR NEOGENE RIVER DRAINAGE OF THE BASIN AND RANGE" (2016). Graduate Student Theses, Dissertations, & Professional Papers. 10637. https://scholarworks.umt.edu/etd/10637 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. TECTONIC ALTERATION OF A MAJOR NEOGENE RIVER DRAINAGE OF THE BASIN AND RANGE By STUART DOUGLAS PARKER Bachelor of Science, University of North Carolina-Asheville, Asheville, North Carolina, 2014 Thesis Presented in partial fulfillment of the requirements for the degree of Master of Science in Geology The University of Montana Missoula, MT May, 2016 Approved by: Scott Whittenburg, Dean of The Graduate School Graduate School James W. Sears, Committee Chair Department of Geosciences Rebecca Bendick Department of Geosciences Marc S. Hendrix Department of Geosciences Andrew Ware Department of Physics and Astronomy Parker, Stuart, M. S., May, 2016 Geology Tectonic alteration of a major Neogene river drainage of the Basin and Range Chairperson: James W. -
DOGAMI Open-File Report O-16-06, Metallic and Industrial Mineral Resource Potential of Southern and Eastern Oregon
Oregon Department of Geology and Mineral Industries Brad Avy, State Geologist OPEN-FILE REPORT O-16-06 METALLIC AND INDUSTRIAL MINERAL RESOURCE POTENTIAL OF SOUTHERN AND EASTERN OREGON: REPORT TO THE OREGON LEGISLATURE Mineral Resource Potential High Moderate Low Present Not Found Base Metals Bentonite Chromite Diatomite Limestone Lithium Nickel Perlite Platinum Group Precious Metals Pumice Silica Sunstones Uranium Zeolite G E O L O G Y F A N O D T N M I E N M E T R R A A L P I E N D D U N S O T G R E I R E S O 1937 Ian P. Madin1, Robert A. Houston1, Clark A. Niewendorp1, Jason D. McClaughry2, Thomas J. Wiley1, and Carlie J.M. Duda1 2016 1 Oregon Department of Geology and Mineral Industries, 800 NE Oregon St., Ste. 965 Portland, OR 97232 2 Oregon Department of Geology and Mineral Industries, Baker City Field Office, Baker County Courthouse, 1995 3rd St., Ste. 130, Baker City, OR 97814 Metallic and Industrial Mineral Resource Potential of Southern and Eastern Oregon: Report to the Oregon Legislature NOTICE This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or sur- veying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. Cover image: Maps show mineral resource potential by individual commodity. -
The Late Oligocene Cieneguilla Basanites, Santa Fe County
New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/62 The late Oligocene Cieneguilla basanites, Santa Fe County: Records of early Rio Grande rift magmatism Jennifer Lindline, Michael Petronis, Rachell Pitrucha, and Salvador Sena, 2011, pp. 235-250 in: Geology of the Tusas Mountains and Ojo Caliente, Author Koning, Daniel J.; Karlstrom, Karl E.; Kelley, Shari A.; Lueth, Virgil W.; Aby, Scott B., New Mexico Geological Society 62nd Annual Fall Field Conference Guidebook, 418 p. This is one of many related papers that were included in the 2011 NMGS Fall Field Conference Guidebook. Annual NMGS Fall Field Conference Guidebooks Every fall since 1950, the New Mexico Geological Society (NMGS) has held an annual Fall Field Conference that explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for geologic guidebooks and are an essential geologic reference for anyone working in or around New Mexico. Free Downloads NMGS has decided to make peer-reviewed papers from our Fall Field Conference guidebooks available for free download. Non-members will have access to guidebook papers two years after publication. Members have access to all papers. This is in keeping with our mission of promoting interest, research, and cooperation regarding geology in New Mexico. However, guidebook sales represent a significant proportion of our operating budget. Therefore, only research papers are available for download. Road logs, mini-papers, maps, stratigraphic charts, and other selected content are available only in the printed guidebooks. -
The Origin of the Columbia River Flood Basalt Province: Plume Versus Nonplume Models
The Origin of the Columbia River Flood Basalt Province: Plume versus Nonplume Models Peter R. Hooper1, Victor E. Camp2, Stephen P. Reidel3 and Martin E. Ross4 1 Dept of Geology, Washington State University, Pullman, WA 99164 and Open University, Milton Keynes, MK7 6AA, U.K. 2 Dept of Geological Sciences, San Diego State University, San Diego, CA 92182 3 Washington State University Tri-Cities, Richland, Washington 99352 4 Dept of Earth and Environmental Sciences, Northeastern University, 360 Huntington Av., Boston, MA 02115 ABSTRACT As a contribution to the plume-nonplume debate we review the tectonic setting in which huge volumes of monotonous tholeiite of the Columbia River flood basalt province of the Pacific Northwest, USA, were erupted. We record the time-scale and the locations of these eruptions, estimates of individual eruption volumes, and discuss the mechanisms of sheet- flow emplacement, all of which bear on the ultimate origin of the province. An exceptionally large chemical and isotopic data base is used to identify the various mantle sources of the basalt and their subsequent evolution in large lower crustal magma chambers. We conclude by discussing the available data in light of the various deep mantle plume and shallow mantle models recently advocated for the origin of this flood basalt province and we argue that the mantle plume model best explains such an exceptionally large volume of tholeiitic basalt erupted over an unusually short period and within such a restricted area. 1 INTRODUCTION Advocates of mantle plumes have long considered continental flood basalt provinces to be one of the most obvious expressions of plume activity (Campbell and Griffiths, 1990; Richards et al., 1989). -
Analogues for Radioactive Waste For~1S •
PNL-2776 UC-70 3 3679 00049 3611 ,. NATURALLY OCCURRING GLASSES: ANALOGUES FOR RADIOACTIVE WASTE FOR~1S • Rodney C. Ewing Richard F. Haaker Department of Geology University of New Mexico Albuquerque, ~ew Mexico 87131 April 1979 Prepared for the U.S. Department of Energy under Contract EY-76-C-06-1830 Pacifi c i'lorthwest Laboratory Richland, Washington 99352 TABLE OF CONTENTS List of Tables. i i List of Figures iii Acknowledgements. Introduction. 3 Natural Glasses 5 Volcanic Glasses 9 Physical Properties 10 Compos i ti on . 10 Age Distributions 10 Alteration. 27 Devitrification 29 Hydration 32 Tekti tes. 37 Physical Properties 38 Composition . 38 Age Distributions . 38 Alteration, Hydration 44 and Devitrification Lunar Glasses 44 Summary . 49 Applications to Radioactive Waste Disposal. 51 Recommenda ti ons 59 References 61 Glossary 65 i LIST OF TABLES 1. Petrographic Properties of Natural Glasses 6 2. Average Densities of Natural Glasses 11 3. Density of Crystalline Rock and Corresponding Glass 11 4. Glass and Glassy Rocks: Compressibility 12 5. Glass and Glassy Rocks: Elastic Constants 13 6. Glass: Effect of Temperature on Elastic Constants 13 7. Strength of Hollow Cylinders of Glass Under External 14 Hydrostatic Pressure 8. Shearing Strength Under High Confining Pressure 14 9. Conductivity of Glass 15 10. Viscosity of Miscellaneous Glasses 16 11. Typical Compositions for Volcanic Glasses 18 12. Selected Physical Properties of Tektites 39 13. Elastic Constants 40 14. Average Composition of Tektites 41 15. K-Ar and Fission-Track Ages of Tektite Strewn Fields 42 16. Microprobe Analyses of Various Apollo 11 Glasses 46 17. -
Archaeological Investigations at Site 35Ti90, Tillamook, Oregon
DRAFT ARCHAEOLOGICAL INVESTIGATIONS AT SITE 35TI90, TILLAMOOK, OREGON By: Bill R. Roulette, M.A., RPA, Thomas E. Becker, M.A., RPA, Lucille E. Harris, M.A., and Erica D. McCormick, M.Sc. With contributions by: Krey N. Easton and Frederick C. Anderson, M.A. February 3, 2012 APPLIED ARCHAEOLOGICAL RESEARCH, INC., REPORT NO. 686 Findings: + (35TI90) County: Tillamook T/R/S: Section 25, T1S, R10W, WM Quad/Date: Tillamook, OR (1985) Project Type: Site Damage Assessment, Testing, Data Recovery, Monitoring New Prehistoric 0 Historic 0 Isolate 0 Archaeological Permit Nos.: AP-964, -1055, -1191 Curation Location: Oregon State Museum of Natural and Cultural History under Accession Number 1739 DRAFT ARCHAEOLOGICAL INVESTIGATIONS AT SITE 35TI90, TILLAMOOK, OREGON By: Bill R. Roulette, M.A., RPA, Thomas E. Becker, M.A., RPA, Lucille E. Harris, M.A., and Erica D. McCormick, M.Sc. With contributions by: Krey N. Easton and Frederick C. Anderson, M.A. Prepared for Kennedy/Jenks Consultants Portland, OR 97201 February 3, 2012 APPLIED ARCHAEOLOGICAL RESEARCH, INC., REPORT NO. 686 Archaeological Investigations at Site 35TI90, Tillamook, Oregon ABSTRACT Between April 2007 and October 2009, Applied Archaeological Research, Inc. (AAR) conducted multiple phases of archaeological investigations at the part of site 35TI90 located in the area of potential effects related to the city of Tillamook’s upgrade and expansion of its wastewater treatment plant (TWTP) located along the Trask River at the western edge of the city. Archaeological investigations described in this report include evaluative test excavations, a site damage assessment, three rounds of data recovery, investigations related to an inadvertent discovery, and archaeological monitoring. -
Subsistence Variability in the Willamette Valley Redacted for Privacy
AN ABSTRACT OF THE THESIS OF Francine M. Havercroft for the degree of Master of Arts in Interdisciplinary Studies in Anthropology, History and Anthropology presented on June 16, 1986. Title: Subsistence Variability in the Willamette Valley Redacted for Privacy Abstract approved: V Richard E. Ross During the summer of 1981, Oregon State University archaeologically tested three prehistoric sites on the William L. Finley National Wildlife Refuge. Among the sites tested were typical Willamette Valley floodplain and adjacent upland sites. Most settlement-subsistence pattern models proposed for the Willamette Valley have been generated with data from the eastern valley floor, western Cascade Range foothills. The work at Wm. L. Finley National Wildlife Refuge provides one of the first opportunities to view similar settings along the western margins of the Willamette Valley. Valley Subsistence Variabilityin the Willamette by Francine M. Havercroft A THESIS submitted to Oregon StateUniversity in partial fulfillmentof the requirementsfor the degree of Master of Arts in InterdisciplinaryStudies Completed June 15, 1986 Commencement June 1987 APPROVED: Redacted for Privacy Professor of Anthropology inAT6cg-tof major A Redacted for Privacy Professor of History in charge of co-field Redacted for Privacy Professor of Anthropology in charge of co-field Redacted for Privacy Chairman of department of Anthropology Dean of Graduate School Date thesis is presented June 16, 1986 Typed by Ellinor Curtis for Francine M. Havercroft ACKNOWLEDGEMENTS Throughout this project, several individuals have provided valuable contributions, and I extend a debt of gratitude to all those who have helped. The Oregon State university Archaeology field school, conducted atthe Wm. L. Finley Refuge, wasdirected by Dr. -
USGS Scientific Investigations Map 2832, Pamphlet
Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon By Charles R. Bacon Pamphlet to accompany Scientific Investigations Map 2832 View from the south-southwest rim of Crater Lake caldera showing the caldera wall from Hillman Peak on the west to Cleetwood Cove on the north. Crater Lake fills half of the 8- by 10-km-diameter caldera formed during the climactic eruption of Mount Mazama volcano approximately 7,700 years ago. Volcanic rocks exposed in the caldera walls and on the flanks record over 400,000 years of eruptive history. The exposed cinder cone and andesite lava flows on Wizard Island represent only 2 percent of the total volume of postcaldera volcanic rock that is largely covered by Crater Lake. Beyond Wizard Island, the great cliff of Llao Rock, rhyodacite lava emplaced 100–200 years before the caldera-forming eruption, dominates the northwest caldera wall where andesite lava flows at the lakeshore are approximately 150,000 years old. 2008 U.S. Department of the Interior U.S. Geological Survey This page intentionally left blank. CONTENTS Introduction . 1 Physiography and access . 1 Methods . 1 Geologic setting . 4 Eruptive history . 5 Regional volcanism . 6 Pre-Mazama silicic rocks . 6 Mount Mazama . 7 Preclimactic rhyodacites . 9 The climactic eruption . 10 Postcaldera volcanism . .11 Submerged caldera walls and floor . .11 Glaciation . .11 Geothermal phenomena . 12 Hazards . 13 Volcanic hazards . 13 Earthquake hazards . 14 Acknowledgments . 14 Description of map units . 14 Sedimentary deposits . 15 Volcanic rocks . 15 Regional volcanism, northwest . 15 Regional volcanism, southwest . 17 Mount Mazama . 20 Regional volcanism, east . 38 References cited . -
Rock and Mineral Identification for Engineers
Rock and Mineral Identification for Engineers November 1991 r~ u.s. Department of Transportation Federal Highway Administration acid bottle 8 granite ~~_k_nife _) v / muscovite 8 magnify~in_g . lens~ 0 09<2) Some common rocks, minerals, and identification aids (see text). Rock And Mineral Identification for Engineers TABLE OF CONTENTS Introduction ................................................................................ 1 Minerals ...................................................................................... 2 Rocks ........................................................................................... 6 Mineral Identification Procedure ............................................ 8 Rock Identification Procedure ............................................... 22 Engineering Properties of Rock Types ................................. 42 Summary ................................................................................... 49 Appendix: References ............................................................. 50 FIGURES 1. Moh's Hardness Scale ......................................................... 10 2. The Mineral Chert ............................................................... 16 3. The Mineral Quartz ............................................................. 16 4. The Mineral Plagioclase ...................................................... 17 5. The Minerals Orthoclase ..................................................... 17 6. The Mineral Hornblende ...................................................