Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Bard, Joseph A.
        Originator: Ramsey, David W.
        Originator: Wolfe, Edward W.
        Originator: Ulrich, George E.
        Originator: Newhall, Christopher G.
        Originator: Moore, Richard B.
        Originator: Bailey, Norman G.
        Originator: Holm, Richard F.
        Publication_Date: 2015
        Title: Database compilation for the geologic map of the San Francisco volcanic field, north-central Arizona
        Edition: 1.0
        Geospatial_Data_Presentation_Form: vector digital data
        Series_Information:
          Series_Name: Data Series
          Issue_Identification: DS 961
	 Online_Linkage: http://dx.doi.org/10.3133/ds961
    Description:
      Abstract: The dataset "map_extents" (ESRI personal geodatabase line feature class) was prepared using geographic information system (GIS) applications. These data are a subset of the geologic map database "Database compilation for the geologic map of the San Francisco volcanic field, north-central Arizona" (ESRI Personal Geodatabase). This point dataset represents geochemical sample point locations in the San Francisco volcanic field. The attributes of the sample points include; sample numbers, age, sample analysis method, and the identification of the original map publications that form this compilation.This database is composed of five adjoining, previously-published, U.S. Geological Survey geologic maps of parts of the volcanic field: SP Mountain, Miscellaneous Field Studies Map MF-1956; northwest, Miscellaneous Field Studies Map MF-1957; southwest, Miscellaneous Field Studies Map MF-1958; central, Miscellaneous Field Studies Map MF-1959; and east, Miscellaneous Field Studies Map MF-1960. These maps were prepared under the Geothermal Research Program of the U.S. Geological Survey as a basis for interpreting the history of magmatic activity in the volcanic field.
      Purpose: The dataset “map_extents” was constructed to create a georeferenced digital geologic map of the San Francisco volcanic field to aid in understanding processes and volcano hazards involved in the eruptions of the constituent volcanoes.
      Supplemental_Information:
        The main component of this publication is a geologic map database prepared using geographic information system (GIS) applications. The geodatabase of geologic points, lines, and polygons was produced as a compilation from five adjoining map sections originally published as printed maps in 1987 (see references below). Four of the sections (U.S. Geological Survey Miscellaneous Field Studies Maps MF-1957, MF-1958, MF-1959, MF-1960) were created by scanning and geo-referencing stable base map material consisting of mylar positives. The final section (MF-1956) was compiled by hand tracing an enlargement of the available printed paper base map onto mylar using a #00 rapidograph pen, the mylar positive was then digitally scanned and geo-referenced. This method was chosen because the original basemap materials (mylar positives) for the MF-1956 section were unavailable at the time of this publication. Due to the condition of the available MF-1956 map section used as the base (which had previously been folded) the accuracy within the boundary of the MF-1956 section is presumed to be degraded in certain areas. The locations of the degraded areas and the degree of degradation within these areas is unclear. Final compilation of the database was completed using the ArcScan toolset, and the Editor toolset in ESRI ArcMap 10.1. Polygon topology was created from the lines and labels were added to the resultant geological polygons, lines, and points. Joseph A. Bard and David W. Ramsey updated and corrected the geodatabase, created the metadata and web presence, and provided the GIS-expertise to bring the geodatabase and metadata to completion. Included are links to files to view or print the original map sheets and the accompanying pamphlets (see references below).

        The orignial geologic maps were prepared under the Geothermal Research Program of the U.S. Geological Survey as a basis for interpreting the history of magmatic activity in the volcanic field. The San Francisco field, which is largely Pleistocene in age, is in northern Arizona, just north of the broad transition zone between the Colorado Plateau and the Basin and Range province. It is one of several dominantly basaltic volcanic fields of the late Cenozoic age situated near the margin of the Colorado Plateau. The volcanic field contains rocks ranging in composition from basalt to rhyolite - the products of eruption through Precambrian basement rocks and approximately a kilometer of overlying, nearly horizontal, Paleozoic and Mesozoic sedimentary rocks. About 500 cubic km of erupted rocks cover about 5,000 square km of predominantly Permian and locally preserved Triassic sedimentary rocks that form the erosionally stripped surface of the Colorado Plateau in Northern Arizona. 

        References Cited: 
        MF-1956: 
        Ulrich, G.E., and Bailey, N.G., 1987, Geologic map of the SP Mountain part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1956, sheets 1 and 2. 

        MF 1957: 
        Wolfe, E.W., Ulrich, G.E., and Newhall, C.G., 1987, Geologic map of the northwest part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1957, sheets 1 and 2. 

        MF-1958: 
        Newhall, C.G., Ulrich, G.E.., and Wolfe, E.W., 1987, Geologic map of the southwest part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1958, sheets 1 and 2. 

        MF-1959: 
        Wolfe, E.W., Ulrich, G.E., Holm, R.F., Moore, R.B., and Newhall, C.G., 1987, Geologic map of the central part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1959, sheets 1 and 2. 

        MF-1960: 
        Moore, R.B., and Wolfe, E.W., 1987, Geologic map of the east part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1960, sheets 1 and 2.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 19870101
          Ending_Date: 20160101
      Currentness_Reference: Unknown
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -112.416255
        East_Bounding_Coordinate: -111.119018
        North_Bounding_Coordinate: 35.841365
        South_Bounding_Coordinate: 35.076266
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: San Francisco
        Theme_Keyword: volcanic field
        Theme_Keyword: Sunset Crater
        Theme_Keyword: SP Mountain
        Theme_Keyword: Arizona
        Theme_Keyword: northern Arizona
        Theme_Keyword: geology
        Theme_Keyword: geological map
        Theme_Keyword: map
        Theme_Keyword: basalt
        Theme_Keyword: tuff
        Theme_Keyword: andesite
        Theme_Keyword: benmorite
        Theme_Keyword: rhyolite
        Theme_Keyword: Pleistocene
        Theme_Keyword: Pliocene
        Theme_Keyword: Miocene
        Theme_Keyword: polarity
        Theme_Keyword: Matuyama
        Theme_Keyword: Gauss
        Theme_Keyword: Gilbert
        Theme_Keyword: Kaibab. Red Mountain
        Theme_Keyword: Navajo Reservation
        Theme_Keyword: geothermal
        Theme_Keyword: basaltic volcanic fields
        Theme_Keyword: Colorado Plateau
        Theme_Keyword: monocline
        Theme_Keyword: anticlyne
        Theme_Keyword: fault
        Theme_Keyword: geologic contact
        Theme_Keyword: geologic unit
        Theme_Keyword: geologic sample
        Theme_Keyword: geochemistry
        Theme_Keyword: rock analysis
        Theme_Keyword: age
        Theme_Keyword: Potassium Argon
        Theme_Keyword: fission track
        Theme_Keyword: K-Ar
        Theme_Keyword: MF-1956
        Theme_Keyword: MF-1957
        Theme_Keyword: MF-1958
        Theme_Keyword: MF-1959
        Theme_Keyword: MF-1960
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
        Theme_Keyword: geoscientificInformation
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: Arizona
        Place_Keyword: San Francisco Volcanic Field
        Place_Keyword: Sunset Crater
        Place_Keyword: SP Mountain
        Place_Keyword: United States of America
        Place_Keyword: Southwest
        Place_Keyword: Flagstaff
        Place_Keyword: Humphreys Peak
        Place_Keyword: Wupatki National Monument
        Place_Keyword: Coconino National Forest
        Place_Keyword: Red Mountain
        Place_Keyword: Kaibab
        Place_Keyword: National Forest
        Place_Keyword: Williams
    Access_Constraints: None
    Use_Constraints: Uses of this digital geologic map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:50,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:50,000 will not yield greater detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. If any errors are detected, please notify Joseph Bard (jbard@usgs.gov). The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data.Any derivative products utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these datasets, nor to imply that changes they made were approved by the U.S. Geological Survey.This database, identified as DS 961, has been approved for release and publication by the U.S. Geological Survey (USGS). Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS nor the U.S. Government have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of delivery, installation, operation, or support by USGS.Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
    Point_of_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey
          Contact_Person: Bard, Joseph A.
        Contact_Position: Physical Science Technician
        Contact_Address:
          Address_Type: mailing and physical
          Address: 1300 SE Cardinal Ct, Bldg 10, Ste 100
          City: Vancouver
          State_or_Province: Washington
          Postal_Code: 98683
          Country: US
        Contact_Voice_Telephone: (360)993-8978
        Contact_Facsimile_Telephone: (360)993-8980
        Contact_Electronic_Mail_Address: jbard@usgs.gov
        Contact_Instructions: preferred contact by email
    Data_Set_Credit: Joseph A. Bard produced this digital database. He and David W. Ramsey updated and corrected the geodatabase, created the metadata and web presence, and provided the GIS-expertise to bring the geodatabase and metadata to completion. Edward W. Wolfe, George E. Ulrich, Christopher G. Newhall, Richard B. Moore, Norman G. Baily, and Richard F. Holm did the original geologic mapping. Digital review was provided by Sue Priest and Frank Trusdell.
    Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Vector
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
        Point_and_Vector_Object_Count: 5
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Planar:
        Map_Projection:
          Map_Projection_Name: NAD 1927 StatePlane Arizona Central FIPS 0202
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.9999
            Longitude_of_Central_Meridian: -111.9166666666667
            Latitude_of_Projection_Origin: 31.0
            False_Easting: 500000.0
            False_Northing: 0.0
        Planar_Coordinate_Information:
          Planar_Coordinate_Encoding_Method: coordinate pair
          Coordinate_Representation:
            Abscissa_Resolution: 0.0003280833333333333
            Ordinate_Resolution: 0.0003280833333333333
          Planar_Distance_Units: foot_us
      Geodetic_Model:
        Horizontal_Datum_Name: D North American 1927
        Ellipsoid_Name: Clarke 1866
        Semi-major_Axis: 6378206.4
        Denominator_of_Flattening_Ratio: 294.9786982
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: map_extents
        Entity_Type_Definition: Geologic line type.
        Entity_Type_Definition_Source: authors
      Attribute:
        Attribute_Label: OBJECTID
        Attribute_Definition: Internal feature number.
        Attribute_Definition_Source: Esri
        Attribute_Domain_Values:
          Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
      Attribute:
        Attribute_Label: Shape
        Attribute_Definition: Feature geometry.
        Attribute_Definition_Source: Esri
        Attribute_Domain_Values:
          Unrepresentable_Domain: Coordinates defining the features.
      Attribute:
        Attribute_Label: SHAPE_Length
        Attribute_Definition: Length of feature in internal units.
        Attribute_Definition_Source: Esri
        Attribute_Domain_Values:
          Unrepresentable_Domain: Positive real numbers that are automatically generated.
      Attribute:
        Attribute_Label: SHAPE_Area
        Attribute_Definition: Area of feature in internal units squared.
        Attribute_Definition_Source: Esri
        Attribute_Domain_Values:
          Unrepresentable_Domain: Positive real numbers that are automatically generated.
      Attribute:
        Attribute_Label: MAP_NAME
        Attribute_Definition: Map names of the five adjoining original publications of the compilation.
        Attribute_Definition_Source: authors
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: MF-1956
            Enumerated_Domain_Value_Definition: Ulrich, G.E., and Bailey, N.G., 1987, Geologic map of the SP Mountain part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1956, sheets 1 and 2.
            Enumerated_Domain_Value_Definition_Source: authors
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: MF 1957
            Enumerated_Domain_Value_Definition: Wolfe, E.W., Ulrich, G.E., and Newhall, C.G., 1987, Geologic map of the northwest part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1957, sheets 1 and 2.
            Enumerated_Domain_Value_Definition_Source: authors
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: MF-1958
            Enumerated_Domain_Value_Definition: Newhall, C.G., Ulrich, G.E.., and Wolfe, E.W., 1987, Geologic map of the southwest part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1958, sheets 1 and 2.
            Enumerated_Domain_Value_Definition_Source: authors
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: MF-1959
            Enumerated_Domain_Value_Definition: Wolfe, E.W., Ulrich, G.E., Holm, R.F., Moore, R.B., and Newhall, C.G., 1987, Geologic map of the central part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1959, sheets 1 and 2.
            Enumerated_Domain_Value_Definition_Source: authors
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: MF-1960
            Enumerated_Domain_Value_Definition: Moore, R.B., and Wolfe, E.W., 1987, Geologic map of the east part of the San Francisco volcanic field, north-central Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1960, sheets 1 and 2.
            Enumerated_Domain_Value_Definition_Source: authors
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey
          Contact_Person: USGS Information Services
        Contact_Address:
          Address_Type: mailing
          Address: Box 25286 Denver Federal Center
          City: Denver
          State_or_Province: Colorado
          Postal_Code: 80225-0046
          Country: US
        Contact_Voice_Telephone: 1-888-ASK-USGS
        Contact_Facsimile_Telephone: (303)202-4695
        Contact_Electronic_Mail_Address: infoservices@usgs.gov
    Resource_Description: Downloadable Data at http://dx.doi.org/10.3133/ds961
    Distribution_Liability: See access and use constraints information.
  Metadata_Reference_Information:
    Metadata_Date: 2015
    Metadata_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey
          Contact_Person: Bard, Joseph A.
        Contact_Position: Physical Science Technician
        Contact_Address:
          Address_Type: mailing and physical
          Address: 1300 SE Cardinal Ct, Bldg 10, Ste 100
          City: Vancouver
          State_or_Province: Washington
          Postal_Code: 98683
          Country: US
        Contact_Voice_Telephone: (360)993-8978
        Contact_Facsimile_Telephone: (360)993-8980
        Contact_Electronic_Mail_Address: jbard@usgs.gov
        Contact_Instructions: preferred contact by email
    Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998
    Metadata_Time_Convention: local time