Identification_Information:
  Citation:
    Citation_Information:
      Originator: Todd C. Shipman
      Originator: Charles A. Ferguson
      Publication_Date: 20031219
      Title: Geologic Map of the McGrew Spring 7.5' Quadrangle, Cochise County, Arizona
      Series_Information:
        Series_Name: Arizona Geological Survey Digital Geologic Map
        Issue_Identification: DGM-35

      Geospatial_Data_Presentation_Form: Map
      Publication_Information:
        Publication_Place: Tucson, AZ
        Publisher: Arizona Geological Survey
  Description:
    Abstract: The McGrew Springs 7.5' Quadrangle is located in northwestern Cochise County about 45 miles southeast of Tucson, Arizona and lies south of the town of Benson.  The western portion of the map encompasses a portion of the eastern flank of the Whetstone Mountains which is part of the Coronado National Forest.  Kartchner Caverns State Park is located in the northeast corner of the map.  The majority of the map area is covered by Quaternary fan and Tertiary basin fill deposits.  Bedrock and surficial geology in the study area were mapped between October, 2002 and June, 2003 as part of a multiyear mapping program directed at producing geologic map coverage for the Karchner Caverns State Park and surrounding areas.  Quaternary and late Tertiary deposits in the McGrew Springs 7.5' Quadrangle were partially mapped by Gray (1965) however this map does not separate the quaternary deposits from each other.  Multiple phases of Quaternary alluvial fans top late Tertiary valley fill.  Large outcrops of valley fill are exposed in the southeastern portion of the map which could be related to structure, however, there was no direct evidence for this structure in the mapped deposits.
    Purpose: The intention of this investigation is a multiyear mapping program directed at producing geologic map coverage for the Karchner Caverns State Park and surrounding San Pedro River areas.  The primary product resulting from new mapping in the study area is a 1:24000 layout-scale geologic map describing rock units and other geologic features.
    Supplemental_Information: The mapping was done under the joint State-Federal STATEMAP program, as specified in the National Geologic Mapping Act of 1992, and was jointly funded by the Arizona Geologic Survey and the U.S.  Geological Survey under STATEMAP Program Contract #02HQAG0016.  The view and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 20031219
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As Required
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -110.375
      East_Bounding_Coordinate: -110.25
      North_Bounding_Coordinate: 31.875
      South_Bounding_Coordinate: 31.75
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: digital cartography
      Theme_Keyword: digital geologic map
      Theme_Keyword: bedrock geology
      Theme_Keyword: surficial geology
      Theme_Keyword: Kartchner Caverns
      Theme_Keyword: McGrew Spring

    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Whetstone Mountains
      Place_Keyword: Cochise County
      Place_Keyword: Arizona
      Place_Keyword: U.S.A.
      Place_Keyword: McGrew Spring 7.5' quadrangle

      Place_Keyword: San Pedro River
  Access_Constraints: None
  Use_Constraints: Not to be reproduced for commercial purposes
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Arizona Geological Survey
      Contact_Position: GIS Technician or GIS Manager
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 416 W. Congress St., # 100
        City: Tucson
        State_or_Province: Arizona
        Postal_Code: 85701
        Country: U.S.A.
      Contact_Voice_Telephone: 520-770-3500
      Contact_Facsimile_Telephone: 520-770-3505
      Hours_of_Service: 8:00 a.m to 5:00 p.m., M-F
  Native_Data_Set_Environment: Adobe® PDF format, jpg and Postscript files
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Although no formal tests were performed, all attribution was tested for accuracy against the paper source maps from which the source dataset was digitized by direct visual comparison between the source maps and the digital dataset.
  Logical_Consistency_Report: All attributes are logically consistent.
  Completeness_Report: Data completeness reflects the content of the source maps.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Shipman, Todd C.
          Title: unpublished field sheets (published here)
          Publication_Date: 2003

          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 20030101
            Ending_Date: 20030801
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: Shipman
      Source_Contribution: map of surficial geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Ferguson, Charles A.
          Title: unpublished field sheets (published here)
          Publication_Date: 2003
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 20021101
            Ending_Date: 20030401
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: Ferguson
      Source_Contribution: map of bedrock geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: aerial photographs
          Title: published aerial photographs, DOQQs and other aerial photos
          Publication_Date: 20031219
          Geospatial_Data_Presentation_Form: DOQQs; 1:24,000-scale black and white aerial photos (Cooper, 1998); USGS Mapp color IR photos (USGS, 1996)
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: photographs
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 19960101
            Ending_Date: 19980101
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: aerial photographs
      Source_Contribution: aerial photographs of ground condition at time of flight
    Process_Step:
      Process_Description:
        (1)  Bedrock geology was hand drafted in the field onto a topographic base;
        (2)  Field sheets were scanned on a table-top scanner;
        (3)  Scans were registered and rectified using ArcGIS 8.3 software;
        (4)  Scans were digitized on-screen and edited as multiple layers using ArcMap;
        (5)  Layers were attributed using ArcMap 8.3;
        (6)  Surficial geology was mapped in the office on mylar over photos;
        (7)  Surficial geology was field verified;
        (8)  Mylar overlays and photos were scanned on a table-top scanner;
        (9)  Scans were rectified using ERDAS Imagine 8.4 and 1992 DOQQ's;
        (10) Scans were digitized on-screen using ArcMap 8.3;
        (11) Line locations were adjusted using ArcMap 8.3;
        (12) Surficial coverage was merged with bedrock coverage;
        (15) Map unit colors and other cartographic symbology were imported from a palette created in ArcMap;
        (16) Layouts with associated collar text were created using ArcMap;
        (17) Layouts were printed to Postscript files then converted to PDF files using Adobe Distiller.
      Source_Used_Citation_Abbreviation: Shipman
      Source_Used_Citation_Abbreviation: Ferguson
      Source_Used_Citation_Abbreviation: aerial photographs
      Process_Date: 20031219
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: Arizona Geological Survey
          Contact_Position: GIS Technician
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 416 W. Congress St., # 100
            City: Tucson
            State_or_Province: Arizona
            Postal_Code: 85701
            Country: U.S.A.
          Contact_Voice_Telephone: 520-770-3500
          Contact_Facsimile_Telephone: 520-770-3505
          Hours_of_Service: 8:00 a.m to 5:00 p.m., M-F
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: raster
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 12
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -111.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      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: 6378206.4000000
      Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
  Overview_Description:
    Entity_and_Attribute_Overview: This dataset consists of 1 Adobe® PDF file, 1 jpg and 1 Postscript file that represents the geologic map with associated collar text. The map is a detailed, 1:24,000 layout scale geologic map of a portion of the Whetstone Mountains and Kartchner Caverns area.
    Entity_and_Attribute_Detail_Citation: n/a
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Arizona Geological Survey
      Contact_Position: Publication Sales Department
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 416 W. Congress St., # 100
        City: Tucson
        State_or_Province: Arizona
        Postal_Code: 85701
        Country: U.S.A.
      Contact_Voice_Telephone: 520-770-3500
      Contact_Facsimile_Telephone: 520-770-3505
      Hours_of_Service: 8:00 a.m to 5:00 p.m., M-F
  Resource_Description: AZGS DGM-35:  Geologic Map of the McGrew Spring 7.5' Quadrangle, Cochise County, Arizona
  Distribution_Liability: Although these data have been processed successfully on a computer system at the Arizona Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from the Arizona Geological Survey, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Arizona Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: Adobe® PDF format
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: Adaptec EasyCD creator
          Compatibility_Information: Windows 95/98/NT4.0/2000
    Fees:
      cd-rom - $15;
      paper map - $15
    Ordering_Instructions: Publications and maps may be purchased by mail, phone or in person from the AZGS office in Tucson. Call for information (520-770-3500) or visit the AZGS website at www.azgs.az.gov to view a list of publications and to print out an order form.
Metadata_Reference_Information:
  Metadata_Date: 20031219
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Arizona Geological Survey
      Contact_Position: GIS Technician
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: 416 W. Congress St., # 100
        City: Tucson
        State_or_Province: Arizona
        Postal_Code: 85701
        Country: U.S.A.
      Contact_Voice_Telephone: 520-770-3500
      Contact_Facsimile_Telephone: 520-770-3505
      Hours_of_Service: 8:00 a.m to 5:00 p.m., M-F
  Metadata_Standard_Name: FGDC CSDGM
  Metadata_Standard_Version: FGDC-STD-001-1998