DOCSLIB.ORG

Non-Pegmatitic Beryllium Occurrences In

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Non-Pegmatitic Beryllium Occurrences In I NONPEGMATITIC BERYLLIUM OCCURRENCES IN ARIZONA, COLORADO, NEW MEXICO, I UTAH, AND FOUR ADJACENT STATES I By Henxy C. Meeves I I I I I I I I I UNITED STATES DEPARTMENT OF THE INTERIOR I Stewart L. Udall, Secretary I BUREAU OF MINES Walter R. Hibbard, Jr., Director I I This publication has been cataloged as follows: Meeves, Henry C Nonpegmatitic beryllium occurrences in Arizona, Colorado, New Mexico, Utah, and four adjacent states, by Henry C. Meeves. [Washington] U. S. Dept. of the interior, Bureau of Mines [I9661 68 p. illus., tables. (U. S. Bureau of Mines. Repon of invesrip- rims 6828) Inclvdes bibliography. 1. BeryhUm oms-U. S. I. Title. (Series) TN23.U7 no. 6828 622.06173 I U. S. Dept. of the Inr. Library CONTENTS Abstract ................................................................. Introduction ............................................................. Acknarledgments .......................................................... Methods used for detecting beryllium ..................................... Nuclear beryllium detection .............................................. Principles .......................................................... Design of instruments ............................................... Interpretation of nuclear measurements .............................. Operating procedures for beryllium detectors ........................ Radiation safety .................................................... Equipment used by Bureau of Mines ................................... Nonpegmatitic beryllium minerals ......................................... New uses and production of beryllium ..................................... Work by the Bureau of Mines .............................................. Bureau of Mines beneficiation studies .................................... Significant occurrences .................................................. Arizona ............................................................. Beryl Hill prospect ............................................ Tungsten King mine ............................................. Breadpan beryllium deposits .................................... Colorado ............................................................ Hount Antero area .............................................. mc group ................................................ Atlas group ............................................... California mine ............................................. Badger Plats (Lake George) area ................................ Description of the deposits ............................... Other Boomer area occurrences ............................. Tarryall occurrences ...................................... sunrmary ................................................... St. Peters Dome area ........................................... C-=she clsh gcq...................................... New Mexico .......................................................... Cornudas Mountains deposit ..................................... Warm Springs beryllium deposit ................................. Iron Mountain district......................................... Utah ................................................................ Miller mine .................................................... Apex Tungsten property ......................................... Spor Mountain deposits ......................................... Honeycomb Hills................................................ Sheeprock Mountains claims ..................................... Vanguard Research property ..................................... Other states ........................................................ Bibliography ............................................................. Appendix A . - Properties investigated for nonpegmatitic beryllium mcurences ............................................... CONTENTS--Continued Appendix B. - Analyses of drill hole cuttings, Breadpan area, Gila County, Ariz................... ..................... 67 Appendix C. - Analyses of surface samples on Bread Pan 1, Gila County, Ariz........................................ 68 ILLUSTRATIONS Scanning beryllium-bearing stringer (white) in Alder schist with portable beryllium detector, Breadpan area, Gila County, Ariz.... Laboratory beryllium detector...................................... Arrangement of beryllium detector and other equipment in a four- wheel-drive vehicle................................ .............. Sketch showing placing of beryllium detection equipment for transportation in a four-wheel-drive vehicle..................... Method of carrying a portable beryllium detector, Spor Mountain area, Juab County, Utah.......................................... Location of properties examined for beryllium in Arizona ........... Location of Breadpan area, Gila County, Ariz....................... View of Breadpan project area, Gila County, Ariz................... Map of Breadpan beryllium area showing Bread Pan claims and Alder formation of outcrops, T 9 N, R 12 E, Gila County, Ariz.......... Outcrop of beryllium-bearing stringers in Alder schist formation in stripped area of the Breadpan area, Gila County, Ariz......... Feldspar stringer in schist, Bread Pan 2 claim, Gila County, Ariz.. Exploration sites, Bread Pan claims 1 and 2, sec 23, T 9 N, R 12 E, Gila County, Ariz........................................ Location of properties examined for beryllium in Colorado.......... CYAC pit on ridge near crest of Mount Antero, Chaffee County, Colo. Geological features, major workings, and Bureau of Mines trenches, Tarryall (Badger Flats) berylliummining area, Park County, Colo. Scanning bedrock in Sureau of Nines trench iisiiig portable beryiiium &rector, Boouer area, Brit County, Coio............... Scanning granite in excavation wail pit with portable beryllium detector, St. Peters Dome area................................... Location of properties examined for beryllium in New Mexico........ Surface workings, Warm Springs beryllium deposit, Socorro County, N. Mex................................................... Drill hole logs, Warm Springs beryllium deposit, Socorro County, N. Mex................................................... Location of properties examined for beryllium in Utah.............. Sketch map of Miller mine, Beaver County, Utah..................... Workings, Apex Tungsten property, Juab County. Utah................ Typical beryllium-bearing tuff bed in walls and floor of bulldozer trench................................................. Geologic sketch map of part of the Vanguard Research Co. property, Tooele County, Utah.................................... iii TABLES 1. Partial list of beryllium-bearing minerals identified in analyses of nonpegmatitic rocks............................................. 12 2. Salient statistics of beryllium, 1960-63............................. 12 NONPEGMATITIC BERYLLIUM OCCURRENCES IN ARIZONA, COLORADO, NEW MEXICO, UTAH, AND FOUR ADJACENT STATES by Henry C. Meeves ' ABSTRACT The nonpegmatitic sources of beryllium in Arizona, Colorado, New Mexico, Utah, and four adjacent states investigated by the Bureau of Mines are described. The investigations included 155 properties from which over 6,200 rock samples were collected; more than 5,500 samples were analyzed by the nuclear beryllium-detection technique. Twenty-four of the properties examined had rock containing more than 0.10 percent BeO. Many of the beryllium deter- minations were made in the field with portable detection instruments by direct scanning oc uui.ii-op kji ..-LSDCIL16-..;-.. D~Y~~AS~--- 1 -- of rock brought to the instrument. The large domestic resources of low-grade nonpeptitic beryllium ore in Utah, which were discovered by private enterprise and which respond favorably to -11-scale treatment processes, may come into conrmercial use and thus reduce the dependence of the United States on imported beryl. The light, metallic element, beryllium, was identified in 1838, !xt its biggest use, as a hardener of copper, did not develop until the 1930's. Uses for beryllium allnyn; onnacially beryllium-cnnner, increased rapidly during World War 11. Shortly after the war, beryllium attracted appreciable interest as a moderator and reflector material for reactors. Since the late 19501s, the focus has been on numerous potential uses of beryllium in high-speed air- craft, missiles, and spacecraft. As a result of these new applications for beryllium, the metal has undergone extensive research and development and some of the work is still in progress. From 1954 to 1962, the Government bought domestically produced beryl at premium prices and under the Domestic Beryl Purchasing Program, although the purchase program ended in 1962, the Office of Minerals Exploration (W) of the U.S. Department of the Interior continues to offer financial assistance of up to 50 percent of approved costs to explore for all types of beryllium. IGeologist, Bureau of Mines, Mineral Resource Office, Area V, Denver, Colo. Work on manuscript completed June 1965. Beryllium, at present, is derived from hand-sorted beryl. In the United States, this mineral has occasionally been obtained alone but more frequently as a byproduct from the mining of feldspar, mica, and lithium. Elsewhere in the world, beryl is obtained from pegmatite deposits comparatively rich in this mineral. These foreign deposits can be worked profitably because the cost of the hand labor required by current mining practice is low. The grow- ing interest and demand for beryllium
Load more

Recommended publications
  • Geology and Mineral Deposits of Lake Valley Quadrangle, Grant, Luna, and Sierra Counties, New Mexico
    BULLETIN 37 Geology and Mineral Deposits of Lake Valley Quadrangle, Grant, Luna, and Sierra Counties, New Mexico BY HENRY L. JICHA, JR. Stratigraphy and structure of sedimentary and volcanic rocks and descriptions of mining districts 1954 STATE BUREAU OF MINES AND MINERAL RESOURCES NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY CAMPUS STATION SOCORRO, NEW MEXICO NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY E. J. Workman, President STATE BUREAU OF MINES AND MINERAL RESOURCES Eugene Callaghan, Director THE REGENTS MEMBERS Ex OFFICIO The Honorable Edwin L. Mechem ............ Governor of New Mexico Tom Wiley .......................... Superintendent of Public Instruction APPOINTED MEMBERS Robert W. Botts ........................................................... Albuquerque Holm O. Bursum, Jr. ................................................................... Socorro Thomas M. Cramer ............................................................ Carlsbad Frank C. DiLuzio ............................................................ Los Alamos A. A. Kemnitz .............................................................................. Hobbs FRONTISPIECE VIEW OF LAKE VALLEY (circa 1905). TOWN OF LAKE VALLEY IN THE LAST DAYS OF THE SILVER BOOM. COMPARE WITH PLATE 2-A. Picture by Henry Schmidt, from the collection of Ray- mond Schmidt. Contents Page ABSTRACT ........................................................... 1 INTRODUCTION ............................................................. 2 Geography and physiography ......................................................
    [Show full text]
  • Petrography and Stratigraphy of Seville-Trident Exploration Wells Near Deming, New Mexico
    Petrographyandstratigraphy 0fSeville-Trident exploration wells near Deming,New Mexico byBusse// E. Clemons,Professor of geology, New Mexico State University, Las Cruces, NM 88003 Abstract Methods Petrographicanalyses of cuttingsfrom four wildcatoil andgas exploration Well cuttings of varied intervalswere washed and scannedunder wellsdrilled by Seville-TridentCorp. near Deming, New Mexico,from 1981 a binocularmicroscope. The selectedintervals depended on the col- to 1983are reported. Thickness of upperTertiary-Quaternary basinfill south- lectionintervals available, types of lithologiespresent in the cuttings, eastof Demingis interpretedto be about4,000 ft. Basin-fillsediments overlie in lithologies.Eighty-five about5,000 ft of Miocene-Oligocenevolcaniclastic rocks and ash-flowtuffs. and bracketingdistinctive changes petro- TheMiocene-Oligocene rocks overlie up to 3,600ft of RubioPeak Formation (Eocene),which is intrudedby a fine-crystallinequartz monzonite The No. 2 City of Demingwell was drilled to a depth of 12,385ft and bottomedin o/ RubioPeak Formation. The o^ No. 1 McSherrywell wasdrilled to a depthof -1 tttl, 12,495ft, but cuttingsare available only to 12,430ft. About300 ft of probable 2r- PaleoceneLobo Formation is interpretedbeneath the RubioPeak Formation -A andabove about 570 ft of Precambrianmetamorphic rocks. The No. I Hurt z :: Hill Ranchwell, westof Deming,is reportedto have6een drilled to a totaldepth ,. t- of 7,723ft. About 2,300ft of basinfill, 4,800ft of Tertiaryvolcanic roiks intrudedby rhyolite of Red Mountain,and M0 ft of El Paio Dolomiteare \1, representedin the cuttings(deepest cuttings studied were from 7,640ft). Silve Introduction Seville-Trident Corp., of Carlsbad, California, drilled five wildcat oil and gas exploration wells in central Luna County from 198Lto 1983(Fig. 1.).All were completedas dry holes and no shows of oil Big Eurro j MrsMfs ,.='lr f+'$.X.{r,o.*'"""",-2/S.{fii| t,,i.
    [Show full text]
  • Southwest NM Publication List
    Southwest New Mexico Publication Inventory Draft Source of Document/Search Purchase Topic Category Keywords County Title Author Date Publication/Journal/Publisher Type of Document Method Price Geology 1 Geology geology, seismic Southwestern NM Six regionally extensive upper-crustal Ackermann, H.D., L.W. 1994 U.S. Geological Survey, Open-File Report 94- Electronic file USGS publication search refraction profiles, seismic refraction profiles in Southwest New Pankratz, D.P. Klein 695 (DJVU) http://pubs.er.usgs.gov/usgspubs/ southwestern New Mexico ofr/ofr94695 Mexico, 2 Geology Geology, Southwestern NM Magmatism and metamorphism at 1.46 Ga in Amato, J.M., A.O. 2008 In New Mexico Geological Society Fall Field Paper in Book http://nmgs.nmt.edu/publications/g $45.00 magmatism, the Burro Mountains, southwestern New Boullion, and A.E. Conference Guidebook - 59, Geology of the Gila uidebooks/59/ metamorphism, Mexico Sanders Wilderness-Silver City area, 107-116. Burro Mountains, southwestern New Mexico 3 Geology Geology, mineral Catron County Geology and mineral resources of York Anderson, O.J. 1986 New Mexico Bureau of Mines and Mineral Electronic file (PDF) NMBGMR search $10.00 for resources, York Ranch SE quadrangle, Cibola and Catron Resources Open File Report 220A, 22 pages. <http://geoinfo.nmt.edu/publicatio CD Ranch, Fence Counties, New Mexico ns/openfile/details.cfml?Volume=2 Lake, Catron, 20A> Cibola 4 Geology Geology, Zuni Salt Catron County Geology of the Zuni Salt Lake 7 1/2 Minute Anderson, O.J. 1994 New Mexico Bureau of Mines and
    [Show full text]
  • U.S. Department of the Interior U.S. Geological Survey
    U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Prepared in cooperation with New Mexico Bureau of Mines and Mineral Resources 1997 MINERAL AND ENERGY RESOURCES OF THE MIMBRES RESOURCE AREA IN SOUTHWESTERN NEW MEXICO 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 purposes only and does not imply endorsement by the U.S. Government. Cover: View looking south to the east side of the northeastern Organ Mountains near Augustin Pass, White Sands Missile Range, New Mexico. Town of White Sands in distance. (Photo by Susan Bartsch-Winkler, 1995.) MINERAL AND ENERGY RESOURCES OF THE MIMBRES RESOURCE AREA IN SOUTHWESTERN NEW MEXICO By SUSAN BARTSCH-WINKLER, Editor ____________________________________________________ U. S GEOLOGICAL SURVEY OPEN-FILE REPORT 97-521 U.S. Geological Survey Prepared in cooperation with New Mexico Bureau of Mines and Mineral Resources, Socorro U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Mark Shaefer, Interim Director For sale by U.S. Geological Survey, Information Service Center Box 25286, Federal Center Denver, CO 80225 Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government MINERAL AND ENERGY RESOURCES OF THE MIMBRES RESOURCE AREA IN SOUTHWESTERN NEW MEXICO Susan Bartsch-Winkler, Editor Summary Mimbres Resource Area is within the Basin and Range physiographic province of southwestern New Mexico that includes generally north- to northwest-trending mountain ranges composed of uplifted, faulted, and intruded strata ranging in age from Precambrian to Recent.
    [Show full text]
  • Compiled by Jane E. Jenness, Kurt Roggensack, and David A. Lopez
    DEPARTMENT OF INTERIOR TO ACCOMPANY UNITED STATES GEOLOGICAL SURVEY WRIR 83-4118-F MAP SHOWING OUTCROPS OF PRE-QUATERNARY ASH-FLOW TUFF AND LAHARIC BRECCIA, BASIN AND RANGE PROVINCE, NEW MEXICO Compiled by Jane E. Jenness, Kurt Roggensack, and David A. Lopez INTRODUCTION This map report is one of a series of geologic and hydrologic maps covering all or parts of States within the Basin and Range province of the' western United States. The map reports in this series contain detailed information on the geohydrology of the province, including the ground-water hydrology, ground-water quality, surface distribution of selected rock types, tectonic conditions, areal geophysics, Pleistocene lakes and marshes, and mineral and energy resources. This work is a part of the U.S. Geological Survey's program for geologic and hydrologic evaluation of the Basin and Range province to identify prospective regions for further study relative to isolation of high-level nuclear waste (Bedinger, Sargent, and Reed, 1984). This map report was prepared from published geologic maps and reports utilizing the project guidelines defined in Sargent and Bedinger (1984). The map shows the known occurrences of pre-Quaternary ash-flow tuff and laharic breccia and associated tuff breccia and agglomerate. The Description of Map Units includes the geologic age, radiometric age, if available, the lithology, thickness where available, and sources of data for the tuffs and laharic breccias in outlined and numbered areas in the counties of the study area. The radiometric ages do not necessarily represent the entire age range of the geologic units. Nomenclature of the geologic units in this map report is from published reports and does not necessarily conform to U.S.
    [Show full text]
  • Klondike Basin--Late Laramide Depocenter in Southern New Mexico
    KlondikeBasin-late Laramide depocenter insouthern New Mexico by TimothyF. Lawton and Busse// E. Clemons, Departmentof Earth Sciences, New Mexico State University, Las Cruces, NM 88003 Abstract It was deposited in alluvial-fan, fluvial, Basinis thusa memberof a groupof late and plava environments adiacent to the Laramidebasins developed in and ad- The Klondike Basindefined in this pa- Lund uftift. Conglomerates'inthe lower iacentto theforeland in Paleogenetime. per occurs mostly in the subsurfaceof part of the section were derived from southwestem New Mexico, north of the nearby sedimentary shata of the uplift; Introduction Cedar Mountain Range and southwest volcanic arenites in the middle and up- Mexico and of Deming. The basin is asymmetric, per part of the section were derived from In southwestern New thickening from a northern zero edge in older volcanic rocks, including the Hi- southeastern Arizona, the Laramide the vicinity of Interstate 10 to a maxi- dalgo Formation, lying to the west and orogeny created a broad belt of north- mum preservedthickness of2,750 ft (840 northwest, and possibly to the north as west-trending faults and folds during the m) of sedimentary strata about 3 mi (5 well. approximate time span of 75-55 Ma (Da- km) north of the sbuthembasin margin. The age of the Lobo Formation and vis, 1979;Drewes, 1988).In contrast with The southem basin margin is a reverse development of the Klondike Basin are Laramide deformation of the Rocky fault or fault complex that bounds the bracketedas early to middle Eocene.The Mountain region, extensivevolcanism ac- Laramide Luna uplift, alsodefined here. asdasts Hidalgo Formation, which occurs companied shortening in Arizona and New The uplift consists of Paleozoic strata in the Lobo, has an upper fission-track has been inter- overlain unconformably by mid-Tertiary ageof 54.9+2.7Ma (Marvinetal.,1978\.
    [Show full text]
  • Geology of the Hurley West Quadrangle Grant County New Mexico
    Geology of the Hurley West Quadrangle Grant County New Mexico By WALDEN P. PRATT CONTRIBUTIONS TO GENERAL GEOLOGY GEOLOGICAL SURVEY BULLETIN 1241-E A study of part of the Silver City mining region, with emphasis on Paleozoic stratigraphy and on early Tertiary intrusion and faulting UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1967 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 CONTENTS Page. Abstract ...___.___._._-_______._.___________._______._.._______ El Introduction. _____________________________________________________ 3 Location and geologic significance of area.-_-__---_______________ 3 Geography. ___ _ __-- _ 5 Purpose of investigation._______________________________________ 5 Previous work__-----------------_-__-_-____________________ 6 Fieldwork and acknowledgments________________________________ 8 Geologic formations-____-_-----__--_-__--__--____-_-_______________ 8 Precambrian rockl_____-----_---_-_____________________________ 9 Paleozoic rocks_______-------------_----_______________________ 10 Cambrian and Ordovician Systems, Bliss Sandstone__________ 10 Ordovician System________________________________________ 15 El Paso Dolomite____________________________________ 15 Montoya Group_______________________________________ 18 Distribution. _____________________________________ 19 Subdivision.______________________________________ 19 Second Value Dolomite___________________________
    [Show full text]
  • Geologic Map of the Truth Or Consequences 30' X 60' Minute
    1 GeoloPic MaD of the Truth or Conseauences 30 x 60 Minute Ouadrande (1:lOO.OOO scale) Richard W. Harrison, Richard P. Lozinsky, Ted L. Eggleston, and William C. McIntosh INTRODUCTION The geologic map of the Truth or Consequences 30 x 60 minute quadrangle has grown out of the Ph.D. dissertations and related work of the authors in south-central New Mexico. Funding and support for this work was provided by New Mexico Bureau of Mines and Mineral Resources. And while the authors have mapped extensive portionsof the sheet in either detailed or reconnaissance fashion, large areas of the sheet have been compiled from existing maps (see attached diagram for sources). This is an in-progress status report. Many aspects of the complex geology found in this area are yet to be worked out. Descriptions of stratigraphy and swcture provided in this report are brief. For more details, reference is given to Eggleston (1986), McIntosh (1989), Harrison (1990), and Lozinsky and Hawley (1986). STRATIGRAPHY QC Quaternarycolluvium QcaQuaternary alluvium andcolluvium, undivided QPgQuaternary piedmont slopedeposits To basalts:Tertiary Pliocene, approximately 4.2-4.8 Ma (IUAr dates) in Winston-Las Animas grabens, approximately2.1 Ma (K/Ardate) in Cutter Sag area, the younger group upon a pediment surface in the Cutter Sag area. Tsf Santa Fe Group: Oligocene and younger basin fill of the Rio Grande drainage west of the Continental Divide: basal beds are intercalated with Oligocene volcanic rocks,are moderately well indurated, more voluminous, younger beds overlie basal beds with angular unconformity andare generally near horizontalin attitude. The Santa Fe Group is dominantly volcaniclastic and heterolithic.
    [Show full text]
  • Petrogenesis and Tectonic Setting of the Peralkaline Pine Canyon Caldera, Trans-Pecos Texas, USA
    Eastern Kentucky University Encompass EKU Faculty and Staff choS larship 10-2006 Petrogenesis and tectonic setting of the peralkaline Pine Canyon caldera, Trans-Pecos Texas, USA. John C. White Eastern Kentucky University, [email protected] Christian S. Benker Eastern Kentucky University Minghua Ren University of Texas at El Paso Kevin M. Urbanczyk Sul Ross State University Don W. Corrick Big Bend National Park Follow this and additional works at: http://encompass.eku.edu/fs_research Part of the Geology Commons, and the Tectonics and Structure Commons Recommended Citation White, J.C., Benker, S.C., Ren, M., Urbanczyk, K.M., and Corrick, D.W., 2006, Petrogenesis and tectonic setting of the peralkaline Pine Canyon caldera, Trans-Pecos Texas, USA. In: Peralkaline Rocks: A Special Issue Dedicated to Henning Sørensen, PERALK2005 Workshop (G. Markl, Ed.) Lithos, v. 91, p. 74-94. (doi: 10.1016.j.lithos.2006.03.015) This Article is brought to you for free and open access by Encompass. It has been accepted for inclusion in EKU Faculty and Staff choS larship by an authorized administrator of Encompass. For more information, please contact [email protected]. Lithos 91 (2006) 74–94 www.elsevier.com/locate/lithos Petrogenesis and tectonic setting of the peralkaline Pine Canyon caldera, Trans-Pecos Texas, USA ⁎ John Charles White a, , S. Christian Benker a, Minghua Ren b, Kevin M. Urbanczyk c, Donald W. Corrick d a Department of Earth Sciences, Eastern Kentucky University, Richmond, KY 40475, USA b Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, USA c Department of Earth and Physical Sciences, Sul Ross State University, Alpine, TX 79832, USA d National Park Service, Big Bend National Park, TX 79834, USA Received 4 July 2005; accepted 13 March 2006 Available online 19 May 2006 Abstract The Pine Canyon caldera is a small (6–7 km diameter) ash-flow caldera that erupted peralkaline quartz trachyte, rhyolite, and high-silica rhyolite lavas and ash-flow tuffs about 33–32 Ma.
    [Show full text]
  • Geology of Massacre Peak Quadrangle, Luna County, New
    A DIV ISI ON OF NEW MEXICO INS TITU T E OF MINING & TE CHNOL OGY GEOLOG IC MAP 5 I 107°37'30" CORRELATION OF MAP UNITS - •C •u l ~{ Qpy .e Qco - 0 ·:;: = Qpo :,: -~ I-----"""- ~ 8 ~ - w Om C I •u OTm 0 I I if •C •g ~' " ~ .9 • •C u . •0 • 0 .~ GJ 0 ...._____ Tgp " TERTIAAY s:._ Trf > Trt ,.___ -.._<____.. ~--,,,,,,--> - . - - ~ <.:----12 --> -':::,. .,-~ Trfi - •C T,s ,t 0 ----- w UP PER CRETACEOU S s LOWER BB CRETACEOUS LOWER G PERMIA N MID DLE 8 PENNSY LVANIAN LOWEfl G M ISSISS IPPI AN UPPER ~ DEVONIAN MIDDLE 0 SILURIAN MIDDLE Ii. UPPER G ORDOVICIAN LOWER ORDOVI CIAN b UPPER ~ CAMBRIAN ~ PJ:I ECAM BALAN DESCRIPTION e>F MAP UNITS Undifferentlaled colluvium-alluvlum- Th in talus-slope veneers and colluvlal and alluvial fil ls on arroyo valley sideslopes, in mountain can­ yons, and on piedmont slopes Younger piedmont-slope arroyo alluvium- Fills (silty to gravelly) of shallow drainages cul below older fan and erosion surfaces graded to closed basins Older piedmont-slope alluvium- Uncon­ solidated fan deposits, piedmont-valley fills, and erosion surface veneers; associated wilh sur­ faces graded to closed basins; uppermost beds often cemented with pedogenic oa.rbonale Mlmbres formalion (Ple istocene)-Piedmont­ slope facles; fan gravel and fanglomerale with interbedded sandy zones; includes thin erosion· surface veneers near mountain fronts; upper layers contain thick carbonate accumulations (callche); th ickness to 40 ft Mimbres formatlon (Pl iocene-Ple istocene)­ Similar to Om ex cept co ntains more intensely weathered boulders and th
    [Show full text]
  • Geology and Mineral Resources of Dwyer Quadrangle, Grant, Luna, and Sierra Counties, New Mexico
    BULLETIN 38 Geology and Mineral Resources of Dwyer Quadrangle, Grant, Luna, and Sierra Counties, New Mexico by WOLFGANG E. ELSTON 1957 STATE BUREAU OF MINES AND MINERAL RESOURCES NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY CAMPUS STATION SOCORRO, NEW MEXICO NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY E. J. Workman, President STATE BUREAU OF MINES AND MINERAL RESOURCES Alvin J. Thompson, Director THE REGENTS MEMBERS Ex OFFICIO The Honorable Edwin L. Mechem....................... Governor of New Mexico Mrs. Georgia L. Lusk .........................Superintendent of Public Instruction APPOINTED MEMBERS Robert W. Botts ...................................................................... Albuquerque Holm 0. Bursum, Jr. ........................................................................ Socorro Thomas M. Cramer ........................................................................ Carlsbad John N. Mathews, Jr. ...................................................................... Socorro Richard A. Matuszeski ............................................................ Albuquerque Contents Page ABSTRACT ........................................................................................................ i INTRODUCTION ......................................................................................... 1 Purpose and scope ....................................................................................... 1 Methods of investigation ............................................................................. 1 Previous work
    [Show full text]
  • The Baca Formation and the Eocene-Oligocene Boundary in New Mexico Spencer G
    New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/34 The Baca Formation and the Eocene-Oligocene boundary in New Mexico Spencer G. Lucas, 1983, pp. 187-192 in: Socorro Region II, Chapin, C. E.; Callender, J. F.; [eds.], New Mexico Geological Society 34th Annual Fall Field Conference Guidebook, 344 p. This is one of many related papers that were included in the 1983 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. Copyright Information Publications of the New Mexico Geological Society, printed and electronic, are protected by the copyright laws of the United States.
    [Show full text]