Identification_Information: Citation: Citation_Information: Originator: Constance J. Nutt Publication_Date: 2000 Title: Geologic map of the Alligator Ridge area, including the Buck Mountain East and Mooney Basin Summit Quadrangles and parts of the Sunshine Well NE and Long Valley Slough Quadrangles, White Pine County, Nevada Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Issue_Identification: I-2691 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://greenwood.cr.usgs.gov/pub/i-maps/i-2691/ Description: Abstract: Data set describes the geology of Paleozoic through Quaternary units in the Alligator Ridge area, which hosts disseminated gold deposits. These digital files were used to create the 1:24,000-scale geologic map of the Buck Mountain East and Mooney Basin Summit Quadrangles and parts of the Sunshine Well NE and Long Valley Slough Quadrangles, White Pine County, east-central Nevada. Purpose: Digital representation of geologic mapping facilitates the presentation and analysis of earth-science data. Digital maps may be displayed at any scale or projection, however the geologic data in this coverage is not intended for use at a scale larger that 1:24,000. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -115.625 East_Bounding_Coordinate: -115.41 North_Bounding_Coordinate: 39.875 South_Bounding_Coordinate: 39.626 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Place: Place_Keyword_Thesaurus: none Place_Keyword: Alligator Ridge Place_Keyword: White Pine County Place_Keyword: Nevada Place_Keyword: USA Access_Constraints: none Use_Constraints: This database is not meant to be used or displayed at any scale other than 1:24,000. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Constance J. Nutt Contact_Organization: U.S. Geological Survey Contact_Position: geologist Contact_Address: Address_Type: mailing address Address: MS 905, USGS, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-1562 Contact_Electronic_Mail_Address: cnutt@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: graphic representation of the map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Constance J. Nutt mapped the geology from 1993 to 1997. Map was digitized by and ARC/INFO database created by Tracey Mercier, Clark Woodward, and Nancy Shock. Database structure checked by Nancy Shock. Norma J. Maes prepared the Adobe Illustrator map layout, which was used for the printed paper map and gif and pdf plot and browse graphic files. F.C. Brunstein edited the geologic map and the Illustrator layout and prepared the metadata. Native_Data_Set_Environment: ARC/INFO version 7.1.2 Data_Quality_Information: Completeness_Report: finished Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Constance J. Nutt Publication_Date: 1997 unpublished mapping Title: unpublished mapping of the Alligator Ridge area, White Pine County, Nevada Source_Scale_Denominator: 24,000 Type_of_Source_Media: hand drawn inked greenline mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993-1997 Source_Currentness_Reference: 1997 Source_Citation_Abbreviation: Geologic map of Alligator Ridge area, White Pine County, Nevada Source_Contribution: New and compiled geologic mapping Process_Step: Process_Description: The original inked geology was digitized in ARC/INFO. The lines and polygon attributes were checked against the original geology and corrected as neccessary. Shadeset and lineset attributes were added in ARC. The digital database was quality checked against original materials, and the database structure was checked. The ARC/INFO files were imported into Illustrator 8, and the map layout was completed in Illustrator. The Illustrator layout was used to produce the GIF and PDF browse graphic files and the plot file, as well as the printed paper map. The illustrator layout was proofed before the GIF and PDF files were made and before the map was printed. Process_Date: 1999 Logical_Consistency_Report: visual proof of computer plot against orginal inked geology on greenline mylar. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1982 and 1990 Title: Buck Mountain East (provisional edition), Mooney Basin Summit (provisional edition), Long Valley Slough, and Sunshine Well NW 7.5 minute topographic quadrangles, Nevada Source_Scale_Denominator: 24,000 Type_of_Source_Media: conventional negatives Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 and 1990 Source_Currentness_Reference: 1982 and 1990 Source_Citation_Abbreviation: Buck Mountain East (provisional edition), Mooney Basin Summit (provisional edition), Long Valley Slough, and Sunshine Well NW 7.5 minute quadrangles, Nevada Source_Contribution: base map for geologic map Process_Step: Process_Description: Conventional negatives and clear-film positives for all four quadrangles were obtained from USGS National Mapping Division. Clear-film positives of the four quadrangles were trimmed and mosaicked conventionally; then contact negative and clear-film positives of the mosaicked base were produced by NMD photolab. The clear-film mosaic was scanned as an 8-bit index color TIFF (.tif) file. The file was opened in Adobe Photoshop: 8-bit indexed color was changed to 8-bit grayscale; Unsharp mask was applied to clean up and sharpen the image; specks, scratches, and other imperfections were cleaned up; file was then changed from 8-bit grayscale to 1-bit and resaved as a .tif file. File was georeferenced in ARC/INFO and then imported into Illustrator layout using MaPublisher filter to align georeferenced base. Several very small dropouts occurred when scanning the base map; author and editor agreed that the dropouts were not critical to the quality of the base map. Process_Date: 1999 Logical_Consistency_Report: visual proof of computer plot against orginal clear-film positive base mosaic. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Transverse_Mercator: UTM_Zone_Number: 12 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 1 Longitude_of_Central_Meridian: -115.5 Latitude_of_Projection_Origin: 0.0 False_Easting: 0 False_Northing: 0 Grid_Coordinate_System_Name: Transverse Mercator Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 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: formation name and line type Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Central Publishing Group Contact_Position: Database Administrator Contact_Address: Address_Type: mailing address Address: MS 902, USGS, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-7684 Contact_Electronic_Mail_Address: nshock@usgs.gov Distribution_Liability: Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:24,000. Resource_Description: USGS Geologic Investigations Series I-2691 Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARC/INFO export Format_Version_Number: 7.1.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://greenwood.cr.usgs.gov/pub/i-maps/i-2691/ Access_Instructions: anonymous FTP 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: PO Box 25286 Address: Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1 (888) ASK-USGS Resource_Description: I-2691 Distribution_Liability: none Standard_Order_Process: Non-digital_Form: Available as a paper map product consisting of one printed map sheet. Fees: For current prices of USGS information products, please see http://mapping.usgs.gov/esic/prices/. Metadata_Reference_Information: Metadata_Date: 20001117 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Constance J. Nutt Contact_Address: Address_Type: mailing address Address: MS 905, USGS, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303) 236-1562 Contact_Electronic_Mail_Address: cnutt@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998