Metadata: Identification_Information: Citation: Citation_Information: Originator: Van S. Williams Publication_Date: 1996 Title: Preliminary geologic map of the Mesquite quadrangle, Clark and Lincoln Counties, Nevada and Mohave County, Arizona Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 96-676 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/1996/ofr-96-0676/ Description: Abstract: Original geologic data mapped by the author in 1995 and 1996 with emphasis on structures in Miocene basin-fill deposits of the Muddy Creek Formation that may control availability and quality of groundwater. Purpose: Provides geologic data to support the rapid development and population growth around the town of Mesquite, particularly the siting of municipal water supply wells Supplemental_Information: Compilation scale: 1:24000 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19961024 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -114.125 East_Bounding_Coordinate: -114.0 North_Bounding_Coordinate: 36.875 South_Bounding_Coordinate: 36.750 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geologic maps Theme_Keyword: bedrock geologic units Theme_Keyword: surficial geologic units Theme_Keyword: geologic structure Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology Theme_Keyword: Geologic map Theme_Keyword: Stratigraphy Theme_Keyword: Quaternary alluvium Theme_Keyword: Tertiary basin-fill sedimentary rocks Theme_Keyword: Tertiary volcanic rocks Theme_Keyword: Normal faults Place: Place_Keyword_Thesaurus: none Place_Keyword: Nevada Place_Keyword: Arizona Place_Keyword: Mohave County, Arizona Place_Keyword: Clark County, Nevada Place_Keyword: Lincoln County, Nevada Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 3100 - Vector Theme_Keyword: 3110 - ESRI Theme_Keyword: 3111 - coverage Theme_Keyword: 1100 - Geology Theme_Keyword: 1101 - General Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f32003 = Clark Place_Keyword: f32017 = Lincoln Access_Constraints: none Use_Constraints: none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/1996/ofr-96-0676/downloads/images/mapthumb.jpg Browse_Graphic_File_Description: Reduced-size image of the map sheet, 160x194 pixels, 13k bytes Browse_Graphic_File_Type: JPEG Data_Set_Credit: Cooperating agencies: Southern Nevada Water Authority and Virgin Valley Water District Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data was entered and checked by the geologist who made the observations. Logical_Consistency_Report: Map elements were visually checked by the author for overshoots, undershoots, duplicate features, and other errors. The report is preliminary and has not been thoroughly reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. The map was reviewed by another geologist for consistency with basic geologic principles and general conformity to USGS mapping standards. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lines were primarily positioned by photointerpretation of aerial photographs using a PG-2 photogrammetric plotter that rectified the position and transferred it to a basemap. Lines were digitized from the basemap using a digitizer tablet with resolution of 0.001 inch. Additional lines and point observations were added in the field using positions determined by a PLGR-95 GPS unit with accuracy of about 10 meters. Most positions on the map are estimated to be accurate closer than 30 m horizontally. There is no elevation data in the database. Lineage: Process_Step: Process_Description: Geology mapped in 1995 and 1996. Compilation completed 9/96. Review and revision completed 10/96. Archive files prepared 2/97. The Mesquite geologic database was compiled using the GSMCAD public domain program (USGS Open-File Report 96-007). It was exported to ARC/INFO using the GSMCAD export function to create ARC generate ASCII files and the gsmarc.aml program in ARC to convert the ASCII files to ARC coverages and build polygons. The gsmdraw.aml program was used in ARC to produce a graphics file of the colored map. In addition an explanation sheet was produced that includes a correlation of map units diagram, a list of map unit names and corresponding symbols, and an explanation of graphical map symbols. Process_Date: 1996 Process_Step: Process_Description: Creation of original metadata record Process_Date: 20100323 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Van S. Williams Contact_Organization: U.S. Geological Survey, National Cooperative Geologic Mapping Team Contact_Address: Address_Type: mailing address Address: MS 913, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: (303) 236-1289 office Contact_Voice_Telephone: (303) 236-7880 secretary Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Transverse Mercator Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9999 Longitude_of_Central_Meridian: -115.567 Latitude_of_Projection_Origin: 0.0 False_Easting: 0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.001 Ordinate_Resolution: 0.001 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: The data is supplied in two formats. The first is the Microsoft-PC based native GSMCAD format and the second is a UNIX based ARC/INFO format. DATABASE FILES - GSMCAD (DOS) ==================================== Mesquite.exp Text file of the description of map units and discussion of deposits, structure, and geologic history. Unit descriptions can be accessed by selecting map unit symbols displayed on screen. Mesquite.lsf, .ndx, and .nod The basic database components of line segment file, index file, and node file for the map. Units are degrees of latitude and longitude Unitlist.lsf, .ndx, and .nod The basic database components for the explanation sheet. Units are inches Mesquite.plt File of plotting parameters for the map Unitlist.plt File of plotting parameters for the explanation sheet Mesquite.prj File of projection parameters for the Transverse Mercator projection of the 1:24,000 scale 7 1/2 ' Mesquite topographic quadrangle basemap UTM11.prj File of projection parameters for the Universal Transverse Mercator (zone 11) projection of a 1:100,000 scale 1 degree by 30 minute Overton sheet basemap. This can be used in GSMCAD to export UTM ground meters. mesquite.ru Text file listing all map unit symbols mesqsym.ru Text file listing the explanations of the graphic symbols on the map comu.ru Text file listing all the age names, headers, and other text used on the correlation of map units diagram, except for the map unit symbols unitname.ru Text file listing the names of map units fieldlog.txt Text file containing selected field notes that are linked to the observation points in the map database (code 197) wwell.tab Table of locations of selected water wells in the map area that can optionally be plotted on the map DATABASE STRUCTURE - ARC/INFO ==================================== The database of the map consists of four coverages (root name Mesquite) and four additional info files. There are also four parallel coverages (rootname mesqexpl) that make up an explanation sheet with a correlation of map units diagram, list of map unit symbols and names, and an explanation of symbols. Mesquitepoly coverage: Contains all contact lines and labelpoints for each polygon. The CODE item defines the significance of the lines as listed above and in the gsmcode.lut INFO file. The P1 item defines the category of polygon as listed above and in the gsmunit.lut INFO file. Mesquiteline coverage: Contains faults, fold axis, and other non-contact lines. Faults that are contacts also appear in the Mesquitepoly coverage. The CODE item defines the significance of the lines as listed above and in the gsmcode.lut INFO file. Mesquitesym coverage: Contains points recording observations, such as strike and dip of bedding, points for posting of dip or plunge values associated with the observation points, and arcs that draw out the symbols associated with the observation points and the symbols used to decorate certain lines. The CODE item defines the type of observation as listed above and in the gsmcode.lut INFO file. For rotational observations (CODE 200 to 299) the P1 item is the azimuth (strike) and the P2 item is the inclination (dip). The item gsmentity contains a unique number for each observation that ties together the observation point, posting point, and arcs that represent a single observation. That number is negative for the posting point to distinguish it from the observation point. Mesquitetext coverage: Contains text points that define the position, rotation, and size of text to appear on the face of the map. Also includes arcs that draw leaders from the text to the appropriate polygons. This coverage is for cartographic purposes and does not include data critical to the database information. The P1 item defines rotation of the text, the P2 item the size of text, and the TEXT item the actual text. Gsmrelate INFO file: Contains the information that relates the gsmcode.lut and gsmunit.lut to the pat and aat INFO files of the coverages Gsmunit.lut INFO file: Contains the first two columns of the table above that lists the number (P1 item) assigned to each category of polygon and the corresponding text symbol used in the map explanation and on the face of the map. The database can be made more useful by expanding this file to include items listing characteristics, age, etc. of each geologic unit, and that should be done before a final version is released. Gsmcode.lut INFO file: Contains a text definition of the meaning of the number stored in the CODE item of every entity in all the coverages. Gsmcolor.lu INFO file: Assigns a color from shadeset CTR269.shd for each category of polygon according to the P1 item. Auxiliary files: Gsmdraw.aml and gsmdraw.mnu files are included to constitute an ARC/INFO macro language program that will extract information from the Mesquite coverages to produce a graphics (.gra) file depicting the Mesquite geologic map. The graphics file can be viewed on screen or plotted with appropriate equipment. The aml program calls shadeset ctr269.shd, font font003, and lineset alcwrg.lin, so these are also included in the archive file. Other files can be substituted, but special geologic characters may not plot properly with a different font. Entity_and_Attribute_Detail_Citation: Database root name: MESQUITE >P1 VALUE AND LETTER SYMBOLS FOR GEOLOGIC UNITS MAPPED======= > >1,Qfp, Flood-plain alluvium >2,Qrm, Recent mainstream alluvium >3,Qim, Intermediate-age mainstream alluvium >4,Qom, Old mainstream alluvium >5,Trm, Tertiary mainstream alluvium >6,Trs, Tertiary sidestream alluvium >10,Qs, Channel alluvium >35,Qiz, Intermediate-age mainstream alluvium, sand and silt facies >46,af, Artificial fill and other land disturbance >47,Tms, Muddy Creek Formation >48,Tmc, Muddy Creek Formation conglomerate facies >53,Qis, Intermediate-age sidestream alluvium >54,Trs, Tertiary sidestream alluvium >56,Qos, Old sidestream alluvium >148,Trs, Tertiary sidestream alluvium (pediment on Muddy Creek Formation) >150,Qos, Old side-stream alluvium (pediment on Muddy Creek Formation) >152,Tok, Old Tertiary calcrete >153,Qe, Windblown sand >161,Qc, Colluvium >167,Ql, Landslide deposits >173,Qrs, Recent sidestream alluvium >177,Qym, Young mainstream alluvium >179,Qys, Young sidestream alluvium >193,Qok, Old Pleistocene calcrete >200,Tik, Intermediate-age Tertiary calcrete >201,Trk, Young Tertiary calcrete >218,Tb, Tertiary basalt lava flow and ash >219,Tf, Post-Muddy Creek Tertiary basin-fill sediments > >FEATURES IN THE DATABASE------------------------- > >CODE | FEATURE >001 | Geologic contacts >008 | Normal fault -certain >009 | Normal fault - approximately located >010 | Normal fault - concealed >011 | Basaltic ash marker bed line >020 | Fold axis lines >054 | Roads >061 | Map boundary >197 | Field observation point symbol >201 | bedding dip symbol >204 | anticline symbol >205 | syncline symbol >207 | ball & bar symbol >208 | fault dip symbol >255 | monocline - anticline symbol >256 | monocline - syncline symbol >313 | gravel pit symbol >375 | water well symbol >501 | geologic unit tag point >555 | geologic unit tag point and text label >599 | Map margin text Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, National Cooperative Geologic Mapping Team Contact_Address: Address_Type: mailing address Address: MS 913, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: (303) 236-1289 office Distribution_Liability: Although this digital spatial 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. This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Data is complete: no features were eliminated or generalized. There is no cross section and the ARC/INFO database lacks a unit properties table, although unit properties are described in the text explanation. A base map coverage is not included but is available separately. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 7.x File_Decompression_Technique: gzip -d and tar Transfer_Size: 0.7 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/1996/ofr-96-0676/downloads/mesquite.tar.gz Fees: none Metadata_Reference_Information: Metadata_Date: 20160205 Metadata_Review_Date: 20030926 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Midwest Area Contact_Position: Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/ Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998