Identification_Information: Citation: Citation_Information: Originator: Christopher J. Potter Originator: Donald S. Sweetkind Originator: Robert P. Dickerson Originator: Michele L. Killgore Publication_Date: 2002 Title: Hydrostructural Maps of the Death Valley Regional Flow System, Nevada and California--Map A: Structural Framework, Neogene Basins, and Potentiometric Surface; Map B: Structural Framework, Earthquake Epicenters, and Potential Zones of Enhanced Hydraulic Conductivity Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Issue_Identification: MF-2372 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://geology.cr.usgs.gov/pub/mf-maps/mf-2372/ Description: Abstract: The locations of principal faults and structural zones that may influence ground-water flow were compiled in support of a three-dimensional ground-water model for the Death Valley regional flow system (DVRFS), which covers 80,000 square km in southwestern Nevada and southeastern California. Faults include Neogene extensional and strike-slip faults and pre-Tertiary thrust faults. Emphasis was given to characteristics of faults and deformed zones that may have a high potential for influencing hydraulic conductivity. These include: (1) faulting that results in the juxtaposition of stratigraphic units with contrasting hydrologic properties, which may cause ground-water discharge and other perturbations in the flow system; (2) special physical characteristics of the fault zones, such as brecciation and fracturing, that may cause specific parts of the zone to act either as conduits or as barriers to fluid flow; (3) the presence of a variety of lithologies whose physical and deformational characteristics may serve to impede or enhance flow in fault zones; (4) orientation of a fault with respect to the present-day stress field, possibly influencing hydraulic conductivity along the fault zone; and (5) faults that have been active in late Pleistocene or Holocene time and areas of contemporary seismicity, which may be associated with enhanced permeabilities. The faults shown on maps A and B are largely from Workman and others (in press), and fit one or more of the following criteria: (1) faults that are more than 10 km in map length; (2) faults with more than 500 m of displacement; and (3) faults in sets that define a significant structural fabric that characterizes a particular domain of the DVRFS. The following fault types are shown: Neogene normal, Neogene strike-slip, Neogene low-angle normal, pre-Tertiary thrust, and structural boundaries of Miocene calderas. We have highlighted faults that have late Pleistocene to Holocene displacement (Piety, 1996). Areas of thick Neogene basin-fill deposits (thicknesses 1-2 km, 2-3 km, and >3 km) are shown on map A, based on gravity anomalies and depth-to-basement modeling by Blakely and others (1999). We have interpreted the positions of faults in the subsurface, generally following the interpretations of Blakely and others (1999). Where geophysical constraints are not present, the faults beneath late Tertiary and Quaternary cover have been extended based on geologic reasoning. Nearly all of these concealed faults are shown with continuous solid lines on maps A and B, in order to provide continuous structures for incorporation into the hydrogeologic framework model (HFM). Map A also shows the potentiometric surface, regional springs (25-35 degrees Celsius, D'Agnese and others, 1997), and cold springs (Turner and others, 1996). Purpose: These maps (maps A and B) were prepared in support of a regional three-dimensional ground-water model currently being constructed by the U.S. Geological Survey (USGS) for the DVRFS. The maps identify regional geologic structures whose possible hydrologic significance merits their inclusion in the HFM for the DVRFS. Supplemental_Information: A composite base map is included based upon published 83-m DEM data from USGS 1:250,000-scale quadrangles, as well as road lines and political boundaries from published USGS 1:100,000-scale DLG data. The 1:100,000-scale data were generalized to 1:250,000 scale for inclusion with the 1:250,000-scale database. Additional coverages include a ground-water model area coverage, and text labels for structural features. These files are all explained in the included README.txt file. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -118.000 East_Bounding_Coordinate: -115.000 North_Bounding_Coordinate: 38.250 South_Bounding_Coordinate: 35.000 Keywords: Theme: Theme_Keyword_Thesaurus: Glossary of Geology, American Geological Institute. Theme_Keyword: Death Valley regional flow system Theme_Keyword: ground-water model Theme_Keyword: Neogene extenstional faults Theme_Keyword: Neogene strike-slip faults Theme_Keyword: pre-Tertiary thrust faults Theme_Keyword: fault zones Theme_Keyword: seismicity Theme_Keyword: hydrogeologic framework model Theme_Keyword: hydrostratigraphy Theme_Keyword: hydrostructural map Theme_Keyword: hydrogeologic map Theme_Keyword: hydraulic properties Theme_Keyword: flow barriers Theme_Keyword: hydrogeology Theme_Keyword: hydrogeologic units Theme_Keyword: Miocene calderas Theme_Keyword: central Death Valley volcanic field Theme_Keyword: southwest Nevada volcanic field Theme_Keyword: nonmarine sedimentary basins Theme_Keyword: Tertiary and Quaternary basins Theme_Keyword: lower carbonate aquifer Theme_Keyword: upper clastic confining unit Theme_Keyword: lower clastic confining unit Theme_Keyword: volcanic confining unit Theme_Keyword: metamorphic rocks Theme_Keyword: Miocene densely welded tuffs Theme_Keyword: fracture-controlled permeability Theme_Keyword: Proterozoic and Lower Cambrian clastic rocks Theme_Keyword: Mississippian clastic rocks Theme_Keyword: Miocene lavas Theme_Keyword: Paleozoic carbonates Theme_Keyword: Yucca Mountain Project Theme_Keyword: U.S. Department of Energy Theme_Keyword: U.S. Geological Survey Theme_Keyword: MODFLOW Theme_Keyword: basin-and-range Theme_Keyword: detachment faults Theme_Keyword: caldera boundaries Theme_Keyword: springs Theme_Keyword: ground-water discharge Theme_Keyword: aquifers Theme_Keyword: brittle faults Theme_Keyword: ductile faults Theme_Keyword: core zone Theme_Keyword: damage zones Theme_Keyword: zones with potentially large hydraulic conductivities Theme_Keyword: metamorphic core complexes Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Geographic Names Information System (GNIS). Place_Keyword: Death Valley Place_Keyword: southwestern Nevada Place_Keyword: southeastern California Place_Keyword: Amargosa Desert Place_Keyword: Oasis Valley Place_Keyword: Tecopa Place_Keyword: Nevada Test Site Place_Keyword: Yucca Mountain Place_Keyword: Greenwater Range Place_Keyword: Ash Meadows ground-water basin Place_Keyword: Oasis Valley Place_Keyword: Pahrump Valley Place_Keyword: Devils Hole Place_Keyword: Basin and Range province Place_Keyword: Las Vegas Place_Keyword: Bat Mountain Place_Keyword: Funeral Mountains Place_Keyword: Las Vegas Valley Place_Keyword: Bare Mountain Place_Keyword: Amargosa Desert Place_Keyword: Black Mountains Place_Keyword: Furnace Creek Place_Keyword: Stewart Valley Place_Keyword: Mine Mountain Place_Keyword: Spotted Range Place_Keyword: Mercury Place_Keyword: Specter Range Place_Keyword: Rock Valley Place_Keyword: Spring Mountains Place_Keyword: Montgomery Mountains Place_Keyword: Resting Spring Place_Keyword: Nopah Range Place_Keyword: Spring Mountains Place_Keyword: Thirsty Mountain Place_Keyword: Silent Mountain Place_Keyword: Timber Mountain Place_Keyword: Greenwater Range Place_Keyword: Black Mountains Place_Keyword: Beatty, Nevada Place_Keyword: Fortymile Canyon Place_Keyword: Furnace Creek Ranch Place_Keyword: Schwaub Peak Place_Keyword: Willow Spring Place_Keyword: Cold Creek Spring Place_Keyword: Indian Springs Place_Keyword: Wheeler Pass Place_Keyword: Resting Springs Range Place_Keyword: Big Dune Place_Keyword: Point of Rocks Place_Keyword: Devils Hole Place_Keyword: Owens Valley Place_Keyword: Slate Ridge Place_Keyword: Last Chance Range Place_Keyword: Gold Mountain Place_Keyword: Mercury Valley Place_Keyword: Pintwater Range Access_Constraints: None Use_Constraints: None. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher J. Potter Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Denver Federal Center, MS-939 Address: Box 25046 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-1735 Contact_Electronic_Mail_Address: cpotter@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Neogene and pre-Tertiary faults modified from Workman and others, 2002, by C.J. Potter. Late Pleistocene and Holocene faults from Piety, 1996. Modified faults digitized by M.L. Killgore. Native_Data_Set_Environment: Sun OS 5.7, sun4m, ARC/INFO version 7.0.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The database was compiled largely from pre-existing digital data and combined in ARC/INFO. Frequency tests were run on the arc and polygon labels to ensure that no features are unlabeled. The attributes have been checked by both the authors and the reviewers for agreement with published maps, unpublished field mapping, and preliminary drafted versions of the map. The attribute data in the data set should be taken as an accurate representation of the authors' geologic interpretations. Logical_Consistency_Report: All lines were visually inspected by the authors for proper intersections, repetition, overshoots, undershoots, and overall logical consistency. The geologic features in the map area are all described, in the view of the authors, at a consistent scale of 1:350,000. All coverages were cleaned and built in ARC/INFO (version 7.0.2) to ensure a logical consistency that is topologically clean. Completeness_Report: This dataset includes only the coverages pertaining to the hydrostructural map. Any margin material on the printed map (explanation of map symbols, and so forth) is not included. This map was produced to be used at 1:350,000 scale. 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 100 meters on a side. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The estimated horizontal positional accuracy of the data is 65 meters. All data used from published and unpublished digital sources are limited by the accuracy of that data. Attempts were made to verify the accuracy of these data by comparison to published tographic data and overlap with other digital data. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Piety, L.A. Publication_Date: 1996 Title: Compilation of known or suspected Quaternary faults within 100 km of Yucca Mountain, Nevada and California Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 94-112 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Piety, 1996 Source_Contribution: late Pleistocene and Holocene faults, Maps A and B Source_Information: Source_Citation: Citation_Information: Originator: Workman, J.B. Originator: Menges, C.M. Originator: Page, W.R. Originator: Ekren, E.B. Originator: Rowley, P.D. Originator: Dixon, G.L. Publication_Date: 2002 Title: Tectonic map of the Death Valley groundwater model, Nevada and California Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-2381-B Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Workman and others, 2002 Source_Contribution: fault locations, base map (Maps A and B) Source_Information: Source_Citation: Citation_Information: Originator: Blakely, R.J. Originator: Jachens, R.C. Originator: Calzia, J.P. Originator: Langenheim, V.E. Publication_Date: 1999 Title: Cenozoic basins of the Death Valley extended terrane as reflected in regional-gravity anomalies Series_Information: Series_Name: Geological Society of America Special Paper Issue_Identification: 333 Publication_Information: Publication_Place: Boulder, Colorado Publisher: Geological Society of America Other_Citation_Details: in Wright, L.A., and Troxel, B.W., eds., Cenozoic basins of the Death Valley region Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Blakely and others, 1999 Source_Contribution: gravity-modeled Cenozoic basin thicknesses (Map A) Source_Information: Source_Citation: Citation_Information: Originator: D'Agnese, F.A. Originator: Faunt, C.C. Originator: Turner, A.K. Publication_Date: 1998 Title: An estimated potentiometric surface of the Death Valley region, Nevada and California, developed using Geographic Information System and automated interpolation techniques Series_Information: Series_Name: U.S. Geological Survey Water-Resources Investigations Report Issue_Identification: 97-4052 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: D'Agnese and others, 1998 Source_Contribution: potentiometric surface (Map A) Source_Information: Source_Citation: Citation_Information: Originator: D'Agnese, F.A. Originator: Faunt, C.C. Originator: Turner, A.K. Originator: Hill, M.C. Publication_Date: 1997 Title: Hydrogeologic evaluation and numerical simulation of the Death Valley regional ground-water flow system, Nevada and California Series_Information: Series_Name: U.S. Geological Survey Water-Resources Investigations Report Issue_Identification: 96-4300 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: D'Agnese and others, 1997 Source_Contribution: regional springs Source_Information: Source_Citation: Citation_Information: Originator: Potter, C.J. Originator: Dickerson, R.P. Originator: Sweetkind, D.S. Originator: Drake, R.M. II Originator: Taylor, E.M. Originator: Fridrich, C.J. Originator: San Juan, C.A. Originator: Day, W.C. Publication_Date: 2002 Title: Geologic map of the Yucca Mountain region, Nye County, Nevada Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Map Issue_Identification: I-2755 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Potter and others, 2002 Source_Contribution: fault locations Source_Information: Source_Citation: Citation_Information: Originator: Rogers, A.M. Originator: Harmsen, S.C. Originator: Meremonte, M.E. Publication_Date: 1987 Title: Evaluation of the seismicity of the southern Great Basin and its relationship to the tectonic framework of the region Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 87-408 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Rogers and others, 1987 Source_Contribution: earthquake epicenter locations Source_Information: Source_Citation: Citation_Information: Originator: Turner, A.K. Originator: D'Agnese, F.A. Originator: Faunt, C.C. Publication_Date: 1996 Title: Digital hydrographic, land use/land cover, and hydrologic unit boundary files for the Death Valley region of southern Nevada and southeastern California processed from U.S. Geological Survey 1:100,000- and 1:250,000-scale digital data files Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 95-362 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Turner and others, 1996 Source_Contribution: cold springs Source_Information: Source_Citation: Citation_Information: Originator: Harmsen, S.C. Originator: Rogers, A.M. Publication_Date: 1988 Title: Earthquake location data for the southern Great Basin of Nevada and California--1984 through 1986 Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 87-596 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1988 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Harmsen and Rogers, 1988 Source_Contribution: earthquake epicenter locations Process_Step: Process_Description: Edits made in ARCEDIT to existing data include: linework digitized and attributed from more recent mapping, incorrectly attributed polygons relabeled, fault attributes and displacement symbols edited, geophysically located structures added, caldera boundaries edited, and global changes made to colors. Process_Date: 2000 to 2001 Process_Step: Process_Description: Compile selected faults and caldera boundaries from previous digital data; linework digitized and attributed; displacement symbols added in ARCEDIT. Process_Date: 2000 Process_Step: Process_Description: In ARCEDIT, complete inferred subsurface continuations of faults. Process_Date: 2000 Process_Step: Process_Description: In ARCEDIT, edit fault and caldera-boundaries and displacement symbols. Process_Date: 2000 Process_Step: Process_Description: Import gravity-modeled depths of Cenozoic basins, locations of earthquake epicenters, and potentiometric surface. Process_Date: 2000 Process_Step: Process_Description: Digitize and edit "Potential Zones of Enhanced Hydraulic Conductivity". Process_Date: 2000 Process_Step: Process_Description: Review of data by L.T. Grose. Process_Date: 2001 Process_Step: Process_Description: Review of data by C.C. Faunt. Process_Date: 2001 Process_Step: Process_Description: Final editing of map to address review comments. Process_Date: 2001 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .9996 Longitude_of_Central_Meridian: -117.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 65 Ordinate_Resolution: 65 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: All coverages contain the standardized attributes for arcs and polygons assigned by ARC/INFO. For arcs these attributes are: 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------#-------------4----------5---------B---------\ 29-------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------#-------------4----------5---------B---------\ 21-------ID-----------4----------5---------B---------\ ****The following coverages were used in both Map A and Map B**** COVERAGE--------ENTITIES---------DESCRIPTION dvrfspoly-------lines/polygons---base map halo_bd---------lines------------flow model boundary hstruc2---------lines------------faults; attributed with ITEM h_code as follows: ITEM: h_code DESCRIPTION SYMBOL 1 Normal fault 1 (color.lin) 2 Strike-slip fault 2 (color.lin) 3 Detachment fault 83 (geoscamp1.lin) 4 Caldera Boundary 83 (geoscamp1.lin) 5 Transverse fault 5 (color.lin) 6 Thrust fault 27 (geology.lin) 7 Thrust fault (inferred) 37 (geology.lin) hydrostruc_bb---lines------------displacement symbols on faults dvrfs_rd--------lines------------roads (minor and major) dvrfs_hptxt-----points-----------text labels for physiographic features, including town names. county_100k-----lines------------county boundaries nts_outline-----lines------------boundary of Nevada Test Site nvca------------lines------------State line boundary between California and Nevada. stipplebuffer---polygons---------stippled area on faults that have measurable late Pleistocene or younger displacement. townpts---------points-----------locations of towns pot_cont--------lines------------potentiometric contours with elevations posted on each contour line. cald_txt--------points-----------text lables for calderas flt_txt---------points-----------text lables for faults ****The following coverages are used on Map A only**** hueb, satb, valb-----------------color shaded-relief map, composited from 83-m DEM data from the following USGS 1:250,000-scale quadrangles: Tonapah, Lund, Las Vegas, Death Valley, Caliente, Goldfield, Kingman, and Trona and include depth to pre-Tertiary surface. coldsprgs-------points-----------locations of cold springs springreg-------points-----------locations of regional springs (24 degrees C to 35 degrees C). ****The following coverages are used on Map B only**** red, green, blue-----------------color shaded-relief map, composited from 83-m DEM data from the following USGS 1:250,000-scale quadrangles: Tonapah, Lund, Las Vegas, Death Valley, Caliente, Goldfield, Kingman, and Trona. polybuffer------polygons---------zones that have special geologic characteristics, as well as seismicity clusters, that may be consistent with relatively large hydraulic conductivities. polynums--------points-----------roman numeral values used to label the "polybuffer" cover. eq78to86--------points-----------earthquake epicenter locations. Four (4) ITEMS from this cover were used: magnitude, date, x-coord and y-coord. The date values that fell in the range of 1978 to 1986 were used for this map. Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U. S. Geological Survey, Central Publications Group Address: Box 25046 Address: Denver Federal Center, MS-902 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5486 Distribution_Liability: Although these digital spatial data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from their authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE and Shape File Format Format_Version_Number: ArcInfo version 7.0.2 File_Decompression_Technique: gzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: None Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S.Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: MF-2372 (Map-on-Demand) Distribution_Liability: none Standard_Order_Process: Non-digital_Form: Available as two printed sheets plus one pamphlet. Order from USGS at the address listed above or see http://rmmcweb.cr.usgs.gov/pub/mod/order.html for more ordering information. Fees: for current prices please see http://rmmcweb.cr.usgs.gov/public/mod/order.html Metadata_Reference_Information: Metadata_Date: 20020306 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher J. Potter Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046 Address: Denver Federal Center, MS-939 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-1735 Contact_Electronic_Mail_Address: cpotter@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None