Entry_ID: (required)
Entry_Title: Digital Geologic Map Database of the Nevada Test Site Area, Nevada
Group: Data_Set_Citation
  Originator(s): Wahl, Ronald R.; Sawyer, David A.; Minor, Scott A.; Carr, Michael D.; Cole, James C.; Swadley, W.C.; Laczniak, Randell J.; Warren, Richard G.; Green, Katryn S.; Engle, Colin M.
  Title: Digital Geologic Map Database of the Nevada Test Site Area, Nevada
  Publication: U.S. Geological Survey Open-File Report
  Publication_Date: 19970411
  Publication_Place: Denver, CO
  Publisher: U.S. Geological Survey
  Edition: 1
  Data_Presentation_Form: map
  URL: http://pubs.usgs.gov/of/1997/ofr-97-0140/
End_Group
Keyword: geology
Keyword: volcanism
Keyword: nuclear testing
Keyword: Basin and Range tectonics
Keyword: None
Keyword: Cenozoic
Keyword: Tertiary
Keyword: Neogene
Keyword: pre Cenozoic
Keyword: Paleozoic
Keyword: pre Cambrian
Group: Temporal_Coverage
  Start_date: cc2500000000
  Stop_date: Present
End_Group
Data_Set_Progress: In work
Group: Spatial_Coverage
  Southernmost_Latitude: 36.5
  Northernmost_Latitude: 37.5
  Westernmost_Longitude: -117.0
  Easternmost_Longitude: -115.875
End_Group
Location: western United States
Location: Basin and Range
Location: Nevada
Location: NV
Location: Nevada Test Site
Location: Southwest Nevada Volcanic Field
Location: SWNV Field
Group: Data_Resolution
  Latitude_Resolution: 1.0
  Longitude_Resolution: 1.0
End_Group
  Access_Constraints: None
  Use_Constraints: None
Originating_Center: (required)
Group: Data_Center
  Data_Center_Name: USGS Information Services
  Dataset_ID: U.S. Geological Survey Open-File Report 97-140
Group: Data_Center_Contact
  Last_name: USGS Information Services
  First_name: N/A
  Phone: (303) 202-4210
  Group: Address
    Mail Stop 517
    U.S. Geological Survey
    Box 25286, Building 810
    Denver Federal Center
    Denver, Colorado 80225-0286
  End_Group
End_Group
End_Group
  Storage_Medium: SunOS, 5.3, sun4m UNIX, ARC/INFO version 7.0.3
Group: Reference
End_Group
Group: Summary
  These data were collected in support of the Department of Energy (DOE)
  activities at the NTS. The data were collected to provide both detailed
  information and a regional synthesis of geologic knowledge of the NTS.
  
  Forty years of geologic investigations at the Nevada Test Site (NTS)
  have been digitized.  These data include all geologic information that:
  (1) has been collected, and
  (2) can be represented on a map within the map borders at the map
  scale is included in the map digital coverages.
  
  
  The following coverages are included with this dataset:
  >Coverage   Type     Description
  >------------------------------------------
  >geolpoly   Polygon  Geologic outcrops
  >geolflts   line     Fault traces
  >geolatts   Point    Bedding attitudes, etc.
  >geolcald   line     Caldera boundaries
  >geollins   line     Interpreted lineaments
  >geolmeta   line     Metamorphic gradients
  These coverages are attributed with numeric values and interpreted
  information. The entity files documented below show the data associated
  with each coverage.
  
  /* Procedures_Used
  
  The original digital data came from the SCITEX scan used to print the
  first NTS geologic map. More detailed information was compiled from
  unpublished digital geologic data at a scale of 1:24,000 and generalized
  for presentation at 1:100,000. Digital data was compiled from aerial
  photography annotated with field geologic data. Further data was
  supplied from unpublished geologic map information in many forms.
  
  /* Revisions
  
  This is Revision 3 of this data set. See references for previous revisions.
  
  /* Reviews_Applied_to_Data:
  
  The geologic data content has been reviewed by geologists of the
  National Cooperative Geologic Mapping Program and the data structures
  by GIS specialists also of the National Cooperative Geologic Mapping
  Program.
  
  /* Related_Spatial_and_Tabular_Data_Sets:
  
  The following coverages are related to the main database and are
  included with the database. Other than the descriptions below, these
  data are not attributed.
  
  >Coverage  Type Description
  >---------------------------------
  >pmtopo    line Vectorized scan of the Pahute Mesa 1:100,000 topographic sheet.
  >pahrtopo  line Vectorized scan of the west 7'30" of the Pahranagat Range 1:100,000 topographic sheet.
  >idnstopo  line Vectorized scan of the west 7'30" of the Indian Springs 1:100,000 topographic sheet.
  >btycult   line Vectorized scan of the cultural layer from the Beatty 1:100,000 topographic sheet.
  >btyhydro  line Vectorized scan of the hydrography layer from the Beatty 1:100,000 topographic sheet.
  >btyhyppr  line Vectorized scan of the index contours from the Beatty 1:100,000 topographic sheet.
  >btyhypsc  line Vectorized scan of the secondary contours from the Beatty 1:100,000 topographic sheet.
  >nts_bdy   line Boundary of the Nevada Test Site.
  
  /* Other_References_Cited
  
  Armstrong, R.L., 1970, Geochronology of Tertiary igneous rocks, eastern
  Basin and Range Province, western Utah, eastern Nevada, and vicinity,
  U.S.A.: Geochimica et Cosmochimica Acta, v. 34, p. 203-232.
  
  Barnes, Harley, and Christiansen, R.L., 1967, Cambrian and Precambrian
  rocks of the Groom district, Nevada, southern Great Basin:  U.S.
  Geological Survey Bulletin 1244-G, p. G1-G34.
  
  Barnes, Harley, Christiansen, R.L., and Byers, F.M., Jr., 1965, Geologic
  map of the Jangle Ridge quadrangle, Nye and Lincoln Counties, Nevada:
  U.S. Geological Survey Geologic Quadrangle Map GQ-363, scale 1:24,000.
  
  Barnes, Harley, Ekren, E.B., Cleaves, and Hedlund, D.C., 1982, Geologic
  and tectonic maps of the Mercury quadrangle, Nye and Clark Counties,
  Nevada:  U.S. Geological Survey Miscellaneous Investigations Map I-1327,
  scale 1:24,000
  
  Barnes, Harley, Houser, F.N., and Poole, F.G., 1963, Geologic map of
  the Oak Spring quadrangle, Nye County, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-214, scale 1:24,000.
  
  Bath, G.D., 1968, Aeromagnetic anomalies related to remnant magnetism
  in volcanic rock, Nevada Test Site, in Eckel, E.B., ed., Nevada Test
  Site:  Geological Society of America Memoir 110, p. 135-146.
  
  Berry, W.B.N., and Boucot, A.J., 1970, Correlation of the North
  American Silurian rocks: Geological Society of America Special Paper
  102, 289 p.
  
  Best, M.G., Christiansen, E.H., Denio, A.L., Gromme, C.S., McKee, E.H.,
  and Noble, D.C., 1989, Eocene through Miocene volcanism in the Great
  Basin of the western United States:  New Mexico Bureau of Mines and
  Mineral Resources Memoir 47, p. 91-133.
  
  Brogan, G.E., Kellogg, K.S., Slemmons, D.B., and Terhune, C.L., 1991,
  Late Quaternary faulting along the Death Valley-Furnace Creek fault
  system, California and Nevada: U.S. Geological Survey Bulletin 1991,23 p.
  
  Burchfiel, B.C., 1966 Reconnaissance geologic map of the Lathrop Wells
  15-minute quadrangle, Nye County, Nevada, U.S. Geological Survey Mis-
  cellaneous Geologic Investigations Map I-474, scale 1:62,500.
  
  Burchfiel, B.C., 1966, change to:Burchfiel, B.C. , 1964, Precambrian
  and Paleozoic stratigraphy of the Specter Range quadrangle, Nye County,
  Nevada, American Association of Petroleum Geologists Bulletin, v. 48,
  p. 40-56.
  
  Burchfiel, B.C. , 1965, Structural geology of the Specter Range
  quadrangle, and its regional significance:  Geological Society of
  America Bulletin, v. 76, p. 175-192.
  
  Burchfiel, B.C., 1964 Precambrian and Paleozoic stratigraphy of the
  Specter Range quadrangle, Nye County, Nevada, American Association
  of Petroleum Geologists Bulletin, v. 48, p. 40-56.
  
  Byers, F.M., Jr., and Barnes, Harley, 1967, Geologic map of the Pahute
  Ridge quadrangle, Nye and Lincoln Counties, Nevada:  U.S. Geological
  Survey Geologic Quadrangle Map GQ-577, scale 1:24,000.
  
  Byers, F.M., Jr., Carr, W.J., Christiansen, R.L., Lipman, P.W., Orkild,
  P.P., and Quinlivan, W.D., 1976a, Geologic map of the Timber Mountain
  caldera area, Nye County, Nevada:  U.S. Geological Survey Miscellaneous
  Investigations Series Map I-891, scale 1:48,000.
  
  Byers, F.M., Jr., Carr, W.J., Orkild, P.P., 1989, Volcanic centers of
  southwestern Nevada: evolution of understanding, 1960-1988:  Journal
  of Geophysical Research, v. 94, no. B5, p. 5908-5924.
  
  Byers, F.M., Jr., Carr, W.J., Orkild, P.P., Quinlivan, W.D., and
  Sargent, K.A., 1976b, Volcanic suites and related cauldrons of Timber
  Mountain-Oasis Valley caldera complex, southern Nevada:  U.S.
  Geological Survey Professional Paper 919, 70 p.
  
  Byers, F.M., Jr., and Cummings, David, 1967, Geologic map of the
  Scrugham Peak quadrangle, Nye County, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-695, scale 1:24,000.
  
  Byers, F.M., Jr., Rogers, C.L., Carr, W.J., and Luft, S.J., 1966,
  Geologic map of the Buckboard Mesa quadrangle, Nye County, Nevada: U.S.
  Geological Survey Geologic Quadrangle Map GQ-552, scale 1:24,000.
  
  Carr, M.D., Sawyer, D.A., Nimz, K., Maldonado, F., and Swadley, WC,
  1995, Digital bedrock geologic map database of the Beatty 30 x 60
  minute quadrangle, Nevada and California, U.S. Geological Survey
  Open-File Report 96-0291, scale 1:100,000.
  
  Carr, M.D., Waddell, S.J., Vick, G.S., Stock, J.M., Monsen, S.A.,
  Harris, A.G., Cork, B.W., and Byers, F.M., Jr., 1986, Geology of
  drill hole UE25p#1: a test hole into pre- Tertiary rocks near Yucca
  Mountain, southern Nevada: U.S. Geological Survey Open-file Report
  86-175, 87 p.
  
  Carr, W.J., 1984, Regional structural setting of Yucca Mountain,
  southwestern Nevada, and late Cenozoic rates of tectonic activity in
  part of the southwestern Great Basin, Nevada and California:  U.S.
  Geological Survey Open-File Report 84-854, 109 p.
  
  Carr, W.J., Byers, F.M., Jr., and Orkild, P.P., 1986, Stratigraphic
  and volcano-tectonic relations of Crater Flat Tuff and some older
  volcanic units, Nye County, Nevada:  U.S. Geological Survey Profess-
  ional Paper 1323, 28 p.
  
  Carr, W.J., and Quinlivan, W.D., 1966, Geologic map of the Timber
  Mountain quadrangle, Nye County, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-503, scale 1:24,000.
  
  Carr, W.J., 1982, Volcano-tectonic history of Crater Flat, southwest-
  ern Nevada, as suggested by new evidence from drill-hole USW-VH-1 and
  vicinity: U.S. Geological Survey Open-file Report 82-457, 25 p.
  
  Carroll, R.D., 1989, Density logging and density of rocks in Rainier
  Mesa area, Nevada Test Site: U.S. Geological Survey Open-File Report
  89-329, 72 p.
  
  Cashman, P.H., and Trexler, J.H., Jr., 1991, The Mississippian Antler
  foreland and continental margin in southern Nevada: the Eleana Forma-
  tion reinterpreted, in Cooper, J.D., and Stevens, C.H., eds., Paleozoic
  paleogeography of the western United States II:  Society of Economic
  Paleontologists and Mineralogists, Pacific Section, v. 67, p. 271- 280.
  
  Cashman. P.H., and Trexler, J.H., Jr., 1994, The case for two coeval
  Mississippian sections at the Nevada Test Site, in McGill, S.F. and
  Ross, T.M., eds., Geologic Investigations of  an Active Margin:
  Geological Society of America Cordilleran Section Guidebook, San
  Bernadino, California, p. 76-81.
  
  Cemen, Ibrahim, Wright, L.A., Drake, R.E., and Johnson, F.C., 1985,
  Cenozoic sedimentation and sequence of deformational events at the
  southeastern end of the Furnace Creek strike-slip fault zone, Death
  Valley region, California:  Society for Economic Mineralogists and
  Petrologists Special Publication 37, p. 127-141.
  
  Christiansen, R.L., and Lipman, P.W., 1965, Geologic map of the Topopah
  Spring NW quadrangle, Nye County, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-444, scale 1:24,000.
  
  Christiansen, R.L., and Noble, D.C., 1968, Geologic map of the Trail
  Ridge quadrangle, Nye County, Nevada:  U.S. Geological Survey Geologic
  Quadrangle Map GQ-774, scale 1:24,000.
  
  Christiansen, R.L., Lipman, P.W., Carr, W.J., Byers, F.M., Jr., Orkild,
  P.P., and Sargent, K.A., 1977, Timber Mountain-Oasis Valley caldera
  complex of southern Nevada: Geological Society of America Bulletin,
  v. 88, p. 943-959.
  
  Cole, J.C., 1991, Pre-drilling geologic summary for characterization
  well "E-Tunnel access" ER-12-1:  U.S. Geological Survey Administrative
  Report, 9 p.
  
  Cole, J.C., Wahl, R.R., and Hudson, M.R., 1989, Structural relations
  within the Paleozoic basement of the Mine Mountain block: implications
  for interpretation of gravity data in Yucca Flat, Nevada Test Site,
  in Olsen, C.W., and Carter, J.A., eds., Proceedings of the Fifth
  Symposium on the Containment of Underground Nuclear Explosions, Santa
  Barbara, California:  Lawrence Livermore National Laboratory Report
  CONF-8909163, v. 2, p. 431-455.
  
  Cole, J.C., Trexler, J.H., Jr., Cashman, P.H., and Hudson, M.R., 1994,
  Structural and stratigraphic relations of Mississippian rocks at the
  Nevada Test Site, in McGill, S.F. and Ross, T.M., eds., Geologic
  Investigations of  an Active Margin: Geological Society of
  America Cordilleran Section Guidebook, San Bernadino, California,
  p. 66-75.
  
  Colton, R.B., and McKay, E.J., 1966, Geologic map of the Yucca Flat
  quadrangle, Nye County, Nevada:  U.S. Geological Survey Geologic
  Quadrangle Map GQ-582, scale 1:24,000.
  
  Colton, R.B., and Noble, D.C., 1967, Geologic map of the Groom Mine SW
  quadrangle, Nye and Lincoln Counties, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-719, scale 1:24,000.
  
  Cornwall, H.R., 1972, Geology and mineral deposits of southern Nye
  County, Nevada: Nevada Bureau of Mines and Geology Bulletin 77, 49 p.
  
  Cornwall, H.R., and Kleinhampl, F.J., 1961, Geologic Map of the Bare
  Mountain quadrangle, Nevada: U.S. Geological Survey Geologic Quadrangle
  Map GQ- 157, scale 1:62,500.
  
  Cornwall, H.R., and Kleinhampl, F.J., 1964, Geology of Bullfrog
  quadrangle and ore deposits related to Bullfrog Hills Caldera, Nye
  County, Nevada and Inyo County, California:  U.S. Geological Survey
  Professional Paper 454-J, 25 p.
  
  Crowe, B.M., Vaniman, D.J., and Carr, W.J., 1983, Status of volcanic
  hazard studies for the Nevada Nuclear Waste Storage Investigations:
  Los Alamos National Laboratory Report LA-9325, Los Alamos, New Mexico.
  
  Dalrymple, G.B., 1979, Critical table for conversion of K-Ar ages from
  old to new constants: Geology, v. 7, p. 558-560.
  
  Dalrymple, G.B., Izett, G.A., Snee, L.W., and Obradovich, J.D., 1993,
  40Ar/39Ar  age spectra and total fusion ages of tektites from
  Cretaceous-Tertiary rocks in the Beloc Formation, Haiti: U.S.
  Geological Survey Bulletin 2065, 20 pp.
  
  Dalrymple, G.B., and Lanphere, M.A., 1969, Potassium-argon dating:
  Principles, Techniques, and Applications to Geochronology: W.H. Freeman,
  New York, 258 p.
  
  Ekren, E.B., Anderson, R.E., Orkild, P.P., and Hinrichs, E.N., 1966,
  Geologic map of the Silent Butte quadrangle, Nye County, Nevada:  U.S.
  Geological Survey Geologic Quadrangle Map GQ-493, scale 1:24,000.
  
  Ekren, E.B., Anderson, R.E., Rogers, C.L., and Noble, D.C., 1971,
  Geology of northern Nellis Air Force Base Bombing and Gunnery Range,
  Nye County, Nevada:  U.S. Geological Survey Professional Paper 651,
  91 p. (map scale 1:125,000).
  
  Ekren, E.B., Rogers, C.L., Anderson, R.E., and Botinelly, Theodore,
  1967, Geologic map of the Belted Peak quadrangle, Nye County, Nevada:
  U.S. Geological Survey Geologic Quadrangle Map GQ-606, scale 1:62,500.
  
  Ekren, E.B., and Sargent, K.A., 1965, Geologic map of the Skull
  Mountain quadrangle, Nye County, Nevada:  U.S. Geological Survey
  Geologic Quadrangle Map GQ-387, scale 1:62,500.
  
  Ferguson, J.F., Cogbill, A.H., and Warren, R.G., 1994, A geophysical-
  geological  transect of the Silent Canyon caldera complex: Journal of
  Geophysical Research, v. 99, p. 4323-4339.
  
  Fleck, R.J., 1970, Tectonic style, magnitude, and age of deformation
  in the Sevier orogenic belt in southern Nevada and southeastern
  California:  Geological Society of America Bulletin, v. 81, p. 1705-1720.
  
  Fleck, R.J., Lanphere, M.A., Turrin, Brent, and Sawyer, D.A., 1991,
  Chronology of late Miocene to Quaternary volcanism and tectonism in
  the southwest Nevada volcanic field [abs.]:  Geological Society of
  America Abstracts with Programs, v. 23, n. 2, p. 25.
  
  Fleck, R.J., Turrin, B.D., Sawyer, D.A.,Warren, R.G., Champion, D.E.,
  Hudson, M.R., Minor, S.A., 1996, Age and character of basaltic rocks
  of the Yucca Mountain region southern Nevada: Journal of Geophysical
  Research
  
  Faulds, J.E., Bell, J.W., Feuerbach, D.L., and Ramelli, A.R., 1994,
  Geologic map of the Crater Flat area: Nevada Bureau of Mines and
  Geology Map 101.
  
  Fridrich, C. J., Orkild, P.P., Murray, M., and  Scott, R. B. 1994,
  Preliminary geologic map of the East of Beatty Mountain: U.S. Geological
  Survey Open-file Report 94-530.
  
  Frizzell, V.A., Jr., and Shulters, Jacqueline, 1990, Geologic map of
  the Nevada Test Map, southern Nevada:  U.S. Geological Survey Miscell-
  aneous Investigations Series Map I-2046, scale 1:100,000.
  
  Gibbons, A.B., Hinrichs, E.N., Hansen, W.R., and Lemke, R.W., 1963,
  Geology of the Rainier Mesa quadrangle, Nye County, Nevada:  U.S.
  Geological Survey Geologic Quadrangle Map GQ-215, scale 1:24,000.
  
  Guth, P.L., 1986, Bedrock geologic map of the Black Hills 1:24,000
  quadrangle, Nevada:  U.S. Geological Survey Open-File Report 86-438,
  scale 1:24,000.
  
  Guth, P.L., 1990, Superposed Mesozoic and Cenozoic deformation, Indian
  Springs quadrangle, southern Nevada, in Wernicke, B.P., ed., Basin and
  range extensional tectonics near the latitude of Las Vegas, Nevada:
  Geological Society of America Memoir 176, p. 237-249.
  
  Hausback, B.P., Deino, A.L., Turrin, B.T., McKee, E.H., Frizzell, V.A.,
  Jr., Noble, D.C., and Weiss, S.I., 1990, New 40Ar/39Ar ages for the
  Spearhead and Civet Cat Canyon Members of the Stonewall Flat Tuff,
  Nye County, Nevada--evidence for systematic errors in standard K-Ar
  determinations on sanidine:  Isochron/West, n. 56, p. 3-7.
  
  Hay, P.L., Pexton, R.E., Teague, T.T., and Kyser, T.K., 1986, Spring
  related carbonate rocks, Mg clays, and associated minerals in Pliocene
  deposits of the Amargosa Desert, Nevada and California:  Geological
  Society of America Bulletin, v. 97, p. 1488-1503.
  
  Hinrichs, E.N., 1968, Geologic map of the Camp Desert Rock quadrangle,
  Nye County, Nevada:  U.S. Geological Survey Geologic Quadrangle Map
  GQ-726, scale 1:24,000.
  
  Hinrichs, E.N., Krushensky, R.D., and Luft, S.J., 1967, Geologic map
  of the Ammonia Tanks quadrangle, Nye County, Nevada:  U.S. Geological
  Survey Geologic Quadrangle Map GQ-638, scale 1:24,000.
  
  Hinrichs, E.N., and McKay, E.J., 1965, Geologic map of the Plutonium
  Valley quadrangle, Nye and Lincoln Counties, Nevada:  U.S. Geological
  Survey Geologic Quadrangle Map GQ-384, scale 1:24,000.
  
  Hoisch, T. D., 1995, "Report on metamorphic petrology and uplift of
  Bare Mountain area: Report for Yucca Mountain Project Tectonics Project.
  DOE Adminstrative report" Hoisch, T.D., and Simpson, C., 1993, Rise
  and tilt of metamorphic rocks in the lower plate of a detachment fault
  in the Funeral Mountains, Death Valley, California: Journal of Geophys-
  ical Research, v. 98, p. 6805-6827.
  
  Hoover, D.L., Swadley, WC, and Gordon, A.J., 1981, Correlation charact-
  eristics of surficial deposits with a description of stratigraphy in
  the Nevada Test Site Region:  U.S. Geological Survey Open-File Report
  81-512, 27 p.
  
  Houser, F.N., and Poole, F.G., 1960, Preliminary geologic map of the
  Climax stock and vicinity, Nye County, Nevada:  U.S. Geological Survey
  Miscellaneous Investigations Series Map I-328, scale 1:5,000.
  
  Hudson, M.R., 1992, Paleomagnetic data bearing on the origin of arcuate
  structures in the French Peak-Massachusetts Mountain area of southern
  Nevada:  Geological Society of America Bulletin, v. 104, p. 581-594.
  
  Hudson M.R., Sawyer, D.A., and Warren, R.G., 1994, Paleomagnetism and
  rotation constraints for the middle Miocene southwestern Nevada
  volcanic field:  Tectonics, v. 13, p. 258-277.
  
  Hunt, C.B., and Mabey, D.R., 1966, Stratigraphy and structure, Death
  Valley, California:  U.S. Geological Survey Professional Paper 494-A,
  162 p.
  
  Jayko, A.S., in press, Geologic Map of the Pahranagat Range 30' by 60'
  minute quadrangle, Nevada:  Nevada Bureau of Mines and Geology Map,
  scale 1:100,000.
  
  Kistler, R.W., 1968, Potassium-argon ages of volcanic rocks in Nye
  and Esmeralda Counties, Nevada, in Eckel, E.B., ed., Nevada Test Site:
  Geological Society of America Memoir 110, p. 251-273.
  
  Lanphere, M.A., Dalrymple, G.B., Fleck, R.J., and Pringle, M.S., 1990,
  Intercalibration of mineral standards for K-Ar and 40Ar/39Ar age
  measurements [abs.]:  Eos, American Geophysical Union Transactions,
  v. 71, p. 1658.
  
  Le Bas, M.J., Le Maitre, R.W., Streckeisen, A., and Zenettin, B., 1986,
  A chemical classification of volcanic rocks based on the total
  alkali-silica diagram:  Journal of Petrology, v. 27, p. 82-133.
  
  Lipman, P.W., Quinlivan, W.D., Carr, W.J., and Anderson, R.E., 1966,
  Geologic map of the Thirsty Canyon SE quadrangle, Nye County, Nevada:
  U.S. Geological Survey Geologic Quadrangle Map GQ-489, scale 1:24,000.
  
  Lipman, P.W. and McKay, E.J., 1965, Geologic map of the Topopah Spring
  NW quadrangle, Nye County, Nevada:  U.S. Geological Survey Geologic
  Quadrangle Map GQ-439, scale 1:24,000.
  
  Maldonado, Florian, 1985, Geologic map of the Jackass Flats area, Nye
  County, Nevada: U.S. Geological Survey Miscellaneous Investigations
  Map I-1519, scale 1:48,000.
  
  Maldonado, Florian, 1990, Geologic map of the northwest quarter of the
  Bullfrog 15- minute quadrangle, Nye County, Nevada:  U.S. Geological
  Survey Miscellaneous Investigations Series Map I-1985, scale 1:24,000.
  
  Maldonado, Florian, and Hausback, B. P., 1990, Geologic map of the
  northeast quarter of the Bullfrog 15-minute quadrangle, Nye County,
  Nevada:  U.S. Geological Survey Miscellaneous Investigations Series
  Map I-2049, scale 1:24,000.
  
  Marvin, R.F., Byers, F.M., Jr., Mehnert, H.H., Orkild, P.P., and Stern,
  T.W., 1970, Radiometric ages and stratigraphic sequence of volcanic
  and plutonic rocks, southern Nye and western Lincoln Counties, Nevada:
  Geological Society of America Bulletin, v. 81, p. 2657-2676.
  
  Marvin, R.F., and Cole, J.C., 1979, Radiometric ages--Compilation "A",
  U.S. Geological Survey: Isochron West no. 22, p. 3-14.
  
  Marvin, R.F., Mehnert, H.H., and McKee, E.H., 1973, A summary of
  radiometric ages of Tertiary volcanic rocks in Nevada and eastern
  California: Part III--southeastern Nevada: Isochron/West no. 6, p. 1-30.
  
  Marvin, R.F., Mehnert, H.H., and Naeser, C.W., 1989, U.S. Geological
  Survey radiometric ages--Compilation "C,"  Part three--California and
  Nevada: Isochron/West no. 52, p. 3-11.
  
  McAllister, J.F., 1970, Geology of the Furnace Creek borate area,
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End_Group
Group: DIF_Author
  Last_name: Wahl
  First_name: Ronald
  Middle_name: R.
  Email: rwahl@usgs.gov
  Phone: (303) 236-1320
  Group: Address
    P.O. Box 25046 Mail Stop 913
    U.S. Geological Survey
    Denver Federal Center
    Denver, CO 80225
  End_Group
End_Group
DIF_Revision_Date: 19970411
Science_Review_Date: