The following ARC/INFO coverages are related to the main database and are included with the data set.
COVERAGE---------------TYPE-------------------DESCRIPTION
NTS-BASE---------------LINE-------------------Vectorized scan of the Beatty, Pahute Mesa, and western 7.5-minutes of the Pahranagat Range and Indian Springs 1:100,000-scale USGS topo maps.
NTS-BOUNDARY-----------LINE-------------------Boundary of the Nevada Test Site.
R4-FAULTS-SYM----------LINE-------------------Offset indicators for faults (bars-and-balls, strike slip arrows).
R4-FLT-TEXT------------POINT------------------Textpoint labels for fault names.
R4-GPFLTS-SYM----------LINE-------------------Offset indicators for geophysically located structures (bars-and-balls, strike slip arrows).
R4-FOLDS-SYM-----------LINE-------------------Fold sense indicators (anticline, syncline, and plunge arrows)
Slate, Janet L. , Berry, Margaret E. , Rowley, Peter D. , Fridrich, Christopher J. , Morgan, Karen S. , Workman, Jeremiah B. , Young, Owen D. , Dixon, Gary L. , Williams, Van S. , McKee, Edwin H. , Ponce, David A. , Hildenbrand, Thomas G. , Swadley, W C , Lundstrom, Scott C. , Ekren, E. Bartlett , Warren, Richard G. , Cole, James C. , Fleck, Robert J. , Lanphere, Marvin A. , Sawyer, David A. , Minor, Scott A. , Grunwald, Daniel J. , Laczniak, Randell J. , Menges, Christopher M. , Yount, James C. , and Jayko, Angela S. , 199912, Digital Geologic Map of the Nevada Test Site and Vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California: U. S. Geological Survey Open-File Report OFR 99-554-A, U. S. Geological Survey, Denver, Colorado.Online Links:
This is a vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 2.5
Ordinates (y-coordinates) are specified to the nearest 2.5
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------FNODE#---------------4----------5---------B---------\
5-------TNODE#---------------4----------5---------B---------\
9-------LPOLY#---------------4----------5---------B---------\
13------RPOLY#---------------4----------5---------B---------\
17------LENGTH---------------8---------18---------F---------5
25------<cover>#-------------4----------5---------B---------\
29------<cover>-ID-----------4----------5---------B---------\
For polygons these attributes are:
COLUMN--ITEM_NAME----------WIDTH-----OUTPUT-----TYPE---#_DECIMALS
1-------AREA-----------------8---------18---------F---------5
9-------PERIMETER------------8---------18---------F---------5
17------<cover>#-------------4----------5---------B---------\
21------<cover>-ID-----------4----------5---------B---------\
The database consists of eight main coverages (and six related coverages; see Related_Spacial_and_Tabular_Datasets) which contain the folowing data:
COVERAGE---------ENTITIES-----------DESCRIPTION
R4-GEOLOGY-------LINES/POLYGONS-----Contains geologic contacts and unit labeled polygons. Line entities attributed with standard ARC/INFO attributes only. Polygon entities attributed with UNIT (unit symbol from description of map units in text) and SYMBOL (unit color value from alc1.shd shadeset).
R4-META----------POLYGONS-----------Contains areal extent of metamorphism in bedrock. Attributed with INDEX (numerical code for polygons of metamorphism).
R4-FAULTS--------LINES--------------Contains mapped fault lines. Line entities attributed with FSYMBOL (unique numerical code for each fault type), FSRCCODE (numerical code for description of fault exposure/source), and FTYPCODE (numerical code for type of fault).
R4-GPFLTS--------LINES--------------Contains geologic structures identified by interpretation of gravity data. Line entities attributed with CODE (numerical code for structure type), LABEL (text item with structure name where appropriate), and INDEX (numerical code indicating whether structure has a value for LABEL).
R4-TZONE---------LINES--------------Contains line indicating axial trace of a transverse zone located based upon several lines of evidence (see text). Line entity attributed with LABEL (text item labeling the transverse zone).
R4-FOLDS---------LINES--------------Contains fold axes as line entities. Attributed with CODE (numerical code for fold exposure and type; anticline/syncline).
R4-CALDERAS------LINES--------------Contains caldera walls as line entities. Attributed with CODE (numerical code for exposure type) and LABEL (text item with abbreviated name of caldera and wall type).
R4-ATTITUDES-----LINES--------------Contains lines to graphically display bedding attitude symbols and dip values. Line entities have only standard ARC/INFO attributes.
The attributes in the R4-GEOLOGY coverage are defined as: UNIT is a text string refering to the unit symbols used in the description of map units text provided with the map. SYMBOL is a number refering to author selected colors in the ARC/INFO shadeset alc1.shd available upon request.
The attributes in the R4-META coverage are defined as: CODE = 0 for internal polygons of no metamorphism CODE = 1 for polygons of metamorphism
The attributes in the R4-FAULTS coverage are defined as:
FSYMBOL-FSRCCODE-FTYPCODE--DESCRIPTION
1--------11-------70----solid fault; undifferentiated
2--------12-------70----dashed fault; undifferentiated
3--------13-------70----dotted fault; undifferentiated
7--------11-------12----solid normal fault
8--------12-------12----dashed normal fault
9--------13-------12----dotted normal fault
12-------11-------22----solid thrust fault
13-------13-------22----dotted thrust fault
14-------31-------70----solid fault; test reactivated
16-------33-------70----dashed fault; test reactivated
20-------31-------12----normal fault; test reactivated
23-------11-------62----solid landslide
28-------11-------32----solid low-angle normal fault
29-------12-------32----dashed low-angle normal fault
30-------13-------32----dotted low-angle normal fault
31-------11-------42----solid rt-lateral fault
33-------13-------42----dotted rt-lateral fault
34-------11-------41----solid lft-lateral fault
35-------12-------41----dashed lft-lateral fault
36-------13-------41----dotted lft-lateral fault
40-------11-------54----solid oblique rt-lateral flt
41-------12-------54----dashed oblique rt-lateral flt
42-------13-------54----dotted oblique rt-lateral flt
46-------11-------53----solid oblique lft-lateral flt
47-------12-------53----dashed oblique lft-lateral flt
48-------13-------53----dotted oblique lft-lateral flt
50-------21-------12----solid normal flt in Quaternary
51-------21-------70----solid flt in Quaternary; undiff
53-------41-------12----normal flt in Quaternary; test reactivated
56-------51-------12----normal flt; test caused
57-------51-------70----solid flt; undiff; test caused
FSRCCODE values:
11 -- well-located natural fault or slip-surface trace
12 -- approximately located or inferred natural fault or slip-surface trace
13 -- concealed natural fault or slip-surface trace
21 -- natural fault that offsets Quaternary deposits
31 -- well-located fault in bedrock that ruptured in response to nuclear testing; existence of fault known prior to nuclear test but reactivation occurred in response to testing
32 -- approximately located or inferred fault in bedrock that ruptured in response to nuclear testing; existence of fault known prior to nuclear test but reactivation occurred in response to testing.
41 -- fault in Quaternary deposits that ruptured in response to nuclear testing; existence of fault known prior to nuclear test but reactivation occurred in response to testing.
51 -- fault first recognized on the basis of surface rupture due to nuclear testing; includes new ruptures in bedrock or Quaternary deposits resulting from test-induced reactivation of subsurface faults.
FTYPCODE values:
12 -- normal fault; down-to-right apparent offset
22 -- thrust fault; upper plate on right side
32 -- low-angle fault; (< 30 deg. dip); upper plate on right side
41 -- strike-slip fault; left-lateral sense of movement
42 -- strike-slip fault; right-lateral sense of movement
53 -- oblique-slip fault; down-to-right; left-lateral sense of movement
54 -- oblique-slip fault; down-to-right; right-lateral sense of movement
62 -- landslide slip-surface trace; Tertiary(?) slide block on right side
70 -- fault; displacement unspecified
The attributes in the R4-GPFLTS coverage are defined as: CODE = 1 for well constrained buried structures/faults. CODE = 2 for poorly constrained buried structures/faults. CODE = 5 for geophysically defined lineament. INDEX = 0 for structures not to be labeled on the map. INDEX = 1 for structures to be labeled on the map. LABEL is a text string for the structure's name (if given).
The attributes in the R4-TZONE coverage are defined as: LABEL is a text string for the structure's name.
The attributes in the R4-FOLDS coverage are defined as: CODE = 1 for well located anticline axis. CODE = 2 for approximately located anticline axis. CODE = 3 for concealed anticline axis. CODE = 4 for well located syncline axis. CODE = 5 for approximately located syncline axis. CODE = 6 for concealed syncline axis.
The attributes in the R4-CALDERAS coverage are defined as: CODE = 1 for well located caldera wall. CODE = 2 for approximately located caldera wall. CODE = 3 for concealed caldera wall. LABEL is a text string for the structure's name refering to the explanation of map symbols in the accompanying text.
The attributes in the R4-ATTITUDES coverage are standard.
Please refer to the ARC/INFO documentation for explanations of the standard attributes.
Jeremiah B. Workman
U. S. Geological Survey
Box 25046
Denver, CO 80225
U.S.A.
303-236-1257 (voice)
jworkman@usgs.gov
The primary purpose of the three maps is to provide an updated geologic framework to aid development of hydrologic models for the Death Valley regional ground-water flow system study in support of the Department of Energy (DOE) activities at the NTS.
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Byers, F.M., Jr., and Barnes, Harley, 1967, Geologic map of the Paiute Ridge quadrangle, Nye and Lincoln Counties, Nevada: U.S. Geological Survey Geologic Quadrangle Map GQ-577.
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.
Byers, F.M., Jr., Carr, W.J., Christiansen, R.L., Lipman, P.W., Orkild, P.P., and Quinlivan, W.D., 1976, Geologic map of the Timber Mountain caldera area, Nye County, Nevada: U.S. Geological Survey Miscellaneous Investigations Series Map I-891.
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.
Byers, F.M., Jr., Carr, W.J., Orkild, P.P., Quinlivan, W.D., and Sargent, K.A., 1976, Volcanic suites and related cauldrons of Timber Mountain-Oasis Valley caldera complex, southern Nevada: U.S. Geological Survey Professional Paper 919.
Carr, M.D., Sawyer, D.A., Nimz, Kathryn, Maldonado, Florian, and Swadley, W C, 1996, Digital bedrock geologic map database of the Beatty 30 x 60-minute quadrangle, Nevada and California: U.S. Geological Survey Open-File Report OFR 96-291.
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 OFR 86-175.
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Carr, W.J., 1990, Styles of extension in the Nevada Test Site region, southern Walker Lane belt, an integration of volcano-tectonic and detachment fault models, in Wernicke, B.P., ed., Basin and Range extensional tectonics near the latitude of Las Vegas, Nevada: Geological Society of America Memoir 176.
Carr, W.J., and Parrish, L.D., 1985, Geology of drill hole USW VH-2, and structure of Crater Flat, southwestern Nevada: U.S. Geological Survey Open-File Report OFR 85-475.
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.
Carr, W.J., Byers, F.J., Jr., and Orkild, P.P., 1984, Stratigraphic and volcano-tectonic relations of Crater Flat Tuff and some older volcanic units, Nye County, Nevada: U.S. Geological Survey Open-File Report OFR 84-114.
Carr, W.J., Byers, F.J., 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 Professional Paper 1323.
Carroll, R.D., 1989, Density logging and density of rocks in Rainier Mesa area, Nevada Test Site: U.S. Geological Survey Open-File Report OFR 89-329.
Cashman, P.H., and Trexler, J.H., Jr., 1991, The Mississippian Antler foreland and continental margin in southern Nevada-The Eleana Formation 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.
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 1994, Geological Society of America, San Bernadino, CA.
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 Paleontologists Special Publication 37.
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.
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.
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.
Christiansen, R.L., Lipman, P.W., Orkild, P.P., and Byers, F.M., Jr., 1965, Structure of the Timber Mountain caldera, southern Nevada, and its relation to basin-range structure: U.S. Geological Survey Professional Paper 525-B.
Cole, J.C., 1997, Major structural controls on the distribution of pre-Tertiary rocks, Nevada Test Site vicinity, southern Nevada: U.S. Geological Survey Open-File Report OFR 97-533.
Cole, J.C., and Cashman, P.H., 1997, Geologic map of the Mine Mountain area, Nevada Test Site, southern Nevada: U.S. Geological Survey Open-File Report OFR 97-697.
Cole, J.C., and Cashman, P.H., 1998, Geologic map of Paleozoic rocks in the Calico Hills, Nevada Test Site, southern Nevada: U.S. Geological Survey Open-File Report OFR 98-101.
Cole, J.C., and Cashman, P.H., 1999, Structural relationships of pre-Tertiary rocks in the Nevada Test Site region, southern Nevada: U.S. Geological Survey Professional Paper 1607.
Cole, J.C., Harris, A.G., Lanphere, M.A., Barker, C.E., and Warren, R.G., 1993, The case for pre-Middle Cretaceous extensional faulting in northern Yucca Flat, southwestern Nevada (abs.): Geological Society of America Abstracts with Programs v. 25, n. 5.
Colton, R.B., and McKay, E.J., 1966, Geologic map of the Yucca Flat quadrangle, Nye and Lincoln Counties, Nevada: U.S. Geological Survey Geologic Quadrangle Map GQ-582.
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.
Connors, K.A., Weiss, S.I., and Noble, D.C., 1998, Geologic map of the northeastern Bullfrog Hills and vicinity, southern Nye County, Nevada: Nevada Bureau of Mines and Geology Map 112.
Cordell, Lindrith, and McCafferty, A.E., 1989, A terracing operator for physical property mapping with potential-field data: Geophysics v. 54.
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.
Crowe, B.M., Perry, F.V., Geissman, J., McFadden, L.D., Wells, S.G., Murrell, M., Poths., J., Valentine, G.A., Bowker, L., and Finnegan, K., 1995, Status of volcanism studies for the Yucca Mountain site characterization project: Los Alamos National Laboratories Report LA-12908-MS, Los Alamos National Laboratory, Los Alamos, NM.
D'Agnese, F.A., and Faunt, C.C., 1999, The Death Valley regional ground-water flow system (DVRFS) model-Calibration versus hydrogeologic conceptual model testing, in Slate, J.L., ed., Proceedings of Conference on Status of Geologic Research and Mapping in Death Valley National Park, Las Vegas, Nevada, April 9-11, 1999: U.S. Geological Survey Open-File Report OFR 99-153.
Day, W.C., Dickerson, R.P., Potter, C.J., Sweetkind, D.S., San Juan, C.A., Drake, R.M., II, and Fridrich, and C.J., 1998, Bedrock geologic map of the Yucca Mountain area, Nye County, Nevada: U.S. Geological Survey Geologic Investigations Series I-2627.
Day, W.C., Potter, C.J., Sweetkind, Donald, Dickerson, R.P., and San Juan, C.A., 1998, Bedrock geologic map of the central block area, Yucca Mountain, Nye County, Nevada: U.S. Geological Survey Miscellaneous Investigations Series Map I-2601.
Deino, A.L., and Best, M.G., 1988, Use of high-precision single-crystal 40Ar/39Ar ages and TRM data in correlation of an ash-flow deposit in the Great Basin (abs.): Geological Society of America Abstracts with Programs v. 20, n. 7.
Dickerson, R.P., Drake, R.M., and Technologies, Pacific Western , 1997, Geologic map of the Paintbrush Canyon area, Yucca Mountain, Nevada: U.S. Geological Survey Open-File Report OFR 97-783.
Dickerson, R.P., Drake, R.M., and II, 1995, Source of the rhyolite of Comb Peak, southwest Nevada volcanic field: Geological Survey of America Abstracts with Programs v. 27, n. 4.
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.
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.
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.
Faulds, J.E., Bell, J.W., Feuerbach, D.L., and Ramelli, A.R., 1994, Geologic map of the Crater Flat area, Nevada: Nevada Bureau of Mines and Geology Map 101.
Faunt, C.C., Belcher, W.R., and D'Agnese, F.A., 1999, Using geologic data for a three-dimensional hydrogeologic framework model of the Death Valley region, in Slate, J.L., ed., Proceedings of Conference on Status of Geologic Research and Mapping in Death Valley National Park, Las Vegas, Nevada, April 9-11, 1999: U.S. Geological Survey Open-File Report OFR 99-153.
Ferguson, J.F., Cogbill, A.H., and Warren, R.G., 1994, A geophysical-geological transect of the Silent Canyon caldera complex, Pahute Mesa, Nevada: Journal of Geophysical Research v. 99, n. B3.
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.
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Fridrich, C.J., 1999, Tectonic evolution of the Crater Flat basin, Yucca Mountain region, Nevada, in Wright, L.A., and Troxel, B.W., eds., Cenozoic basins of the Death Valley region: Geological Society of America Special Paper 333.
Fridrich, C.J., Orkild, P.P., Murray, M., and Scott, R.B., 1994, Preliminary geologic map of the East of Beatty Mountain quadrangle, Nye Co., Nevada: U.S. Geological Survey Open-File Report OFR 94-530.
Fridrich, C.J., Ryder, P.L., Hildenbrand, Thomas, Minor, S.A., Warren, R.G., Sawyer, D.A., and Orkild, P.P., 1999, Geologic map of the Oasis Valley basin and vicinity, Nye County, Nevada: U.S. Geological Survey Open-File Report OFR 99-???.
Fridrich, C.J., Whitney, J.W., Hudson, M.R., and Crowe, B.M., 1999, Late Cenozoic extension, vertical-axis rotation, and volcanism in the Crater Flat basin, southwest Nevada, in Wright, L.A., and Troxel, B.W., eds., Cenozoic basins of the Death Valley region: Geological Society of America Special Paper 333.
Frizzell, V.A., Jr., and Shulters, Jacqueline, 1990, Geologic map of the Nevada Test Site, southern Nevada: U.S. Geological Survey Miscellaneous Investigations Series Map I-2046.
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.
Gile, L.H., Peterson, F.F., and Grossman, R.B., 1966, Morphological and genetic sequences of carbonate accumulation in desert soils: Soil Science v. 101.
Gordon, M., Jr., and Poole, F.G., 1968, Mississippian-Pennsylvanian boundary in southwestern Nevada and southeastern California, p. 157-168, in Eckel, E.B., ed., Nevada Test Site: Geological Society of America Memoir 110.
Grauch, V.J.S., and Cordell, Lindrith, 1987, Limitations of determining density and magnetic boundaries from the horizontal gradient and pseudogravity data: Geophysics v. 52.
Grauch, V.J.S., Sawyer, D.A., Fridrich, C.J., and Hudson, M.R., 1997, Geophysical interpretations west of and within the northwestern part of the Nevada Test Site: U.S. Geological Survey Open-File Report OFR 97-476.
Hansen, W.R., Lemke, R.W., Cattermole, J.M., and Gibbons, A.B., 1963, Stratigraphy and structure of the Rainier and USGS tunnel areas: U.S. Geological Survey Professional Paper 382-A.
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 age determinations on sanidine: Isochron/West no. 56.
Hay, R.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.
Heizler, M.T., Perry, F.V., Crowe, B.M., Peters, Lisa, and Appelt, Robert, 1999, The age of Lathrop Wells volcanic center-An 40Ar/39Ar dating investigation: Journal of Geophysical Research v. 104, n. B1.
Hildenbrand, T.G., Langenheim, V.E., Mankinen, E.A., and McKee, E.H., 1999, Inversion of gravity data to define the pre-Tertiary surface and structures possibly influencing regional ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada: U.S. Geological Survey Open-File Report OFR 99-???.
Hinrichs, E.N., 1968, Geologic map of the Camp Desert Rock quadrangle, Nye County, Nevada: U.S. Geological Survey Geologic Quadrangle Map GQ-726.
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.
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.
Hoisch, T.D., and Simpson, Carol, 1993, Rise and tilt of metamorphic rocks in the lower plate of a detachment fault in the Funeral Mountains, Death Valley, California: Journal of Geophysical Research v. 98, n. B4.
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.
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Wright, L.A., and Troxel, B.W., 1993, Geologic map of the central and northern Funeral Mountains and adjacent areas, Death Valley region, southern California: U.S. Geological Survey Miscellaneous Investigations Series Map I-2305.
Data sources used in this process:
Attributes were carried over from the older version (Revision 3) of the database (see Wahl and others, 1997) and converted to our attribution scheme. New data was attributed both by the geologists making the observations (field observations and/or air photo interpretation) and by GIS specialists using 1:24,000-scale and 1:60,000-scale maps annotated by the geologists. The database was thoroughly reviewed by the authors and other geologists familiar with the geology of the area on 1:24,000-scale and 1:60,000-scale printouts of the map. This database is an accurate representation of their interpretation of the geology. The database was also reviewed by selected authors (GIS specialists) and USGS GIS specialists. Frequency and label-error tests were run on all attributes of all coverages to assure against unattributed and improperly attributed entities. Errors found as a result of these tests were then corrected and tests run again until no errors were found. Within the fault coverage, faults of unkown, uncertain, or undifferentiated displacement are attributed with "FTYPCODE = 70". In many cases, the displacement on these faults is known and indicated by bar-and-ball (dip-slip) and/or arrow (strike-slip) symbols in the R4-FAULTS-SYM coverage included with the dataset but the fault lines were not attributed with a specific fault-type-code (FTYPCODE). All attributed linework follows the right-hand-rule such that all line decoration symbols (barbs, teeth, etc.) are to the right of the arc facing in the direction of the arc.
The reported horizontal positional accuracy for the source data (Wahl and others, 1997) is 15 meters for the linework which was vectorized from a raster scan of the source maps. The estimated horizontal positional accuracy of the new data is 15 to 20 meters. The accuracy of the geophysically defined structures (R4-GPFLTS) is less certain because their position is based upon interpretation of high gradients in the gravity data (published as a companion to this open-file report; Ponce and others, 1999). The horizontal position of these structures can be significantly affected by basin depth and the dip of the structure. The accuracy for these structures is highest where they have surface expressions (ie fault scarps, surface lineaments, and coincedence with previously mapped structures included in the coverage R4-FAULTS). The lowest accuracy is indicated by the line attribute "CODE = 2". Because the source data (Wahl and others, 1997) was vectorized from separate scans of the faults and geology polygons, the linework is not always exactly coincident where it should be (where faults act as unit polygon boundaries). We attempted to improve the accuracy of these lines between the fault (R4-FAULTS) and geology (R4-GEOLOGY) coverages but at scales greater than 1:100,000-scale, these inconsistancies may become more visible. This database was produced to be used at 1:100,000-scale and any problems arising from use at other scales are not the responsibilities of the authors. No vertical data is included in the database (basemap elevations are reproductions of published USGS topographic maps).
This dataset includes only the coverages pertaining to the geologic map. Any margin material on the printed map (correlation chart, explanation of map symbols) is not included. A basemap line coverage produced from scanned topographic maps is included (NTS-BASE). This map was produced to be used at 1:100,000-scale and has been generalized from more detailed mapping. Any geologic features too small to be shown at this scale have been omitted or generalized if they are of significant importance. The smallest objects are approximately 45 to 50 meters on a side.
New linework was digitized at 1:24,000-scale from stable base maps, at 1:80,000-scale from air photos, and at 1:100,000-scale from stable base maps. All new mapping was visually checked and reviewed by the authors at 1:24,000-scale and all of the database was checked and reviewed at 1:60,000-scale for improperly intersecting lines, double lines, overshoots, undershoots, and inconsistency in mapping coverage and detail. Data included from the 1:100,000-scale source database (Wahl and others, 1997) was also checked and reviewed at 1:60,000-scale and logical inconsistencies were corrected. Coverages were built and cleaned in ARC/INFO version 7.1.2 after completion of all edits. The logical consistency is topologically clean for all coverages.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: None
U. S. Geological Survey
U. S. Geological Survey, Central Publications Group
Denver, CO 80225
USA
303-236-1257 (voice)
jworkman@usgs.gov
USGS Open-File Report 99-554-A
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. Although this digital spacial data has been subjected to rigorous review and is substantially complete, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
| Data format: | ARCE and Shape File Format |
|---|---|
| Network links: |
<https://pubs.usgs.gov/of/1999/ofr-99-0554/> |
The data is available online for no fee through the USGS Central Publications Group anonymous ftp site (<http://greenwood.cr.usgs.gov>). The data may be downloaded as a single compressed TAR file in either ARCExport or ShapeFile formats. These files contain all relevent information including printable RTL files, ARC AML's for importing the data and plotting the map, all necessary symbol, line, text, and shade sets to plot the map in ARCPLOT, and all metadata and text documents associated with the map.
Jeremiah B. Workman
U. S. Geological Survey
Box 25046
Denver, CO 80225
USA
303-236-1257 (voice)
jworkman@usgs.gov