Identification_Information:
  Citation:
    Citation_Information:
          Originator: V.E. Langenheim
          Originator: J.T. Watt
          Originator: K.M. Denton
         Publication_Date: 2012
          Title: Magnetic map of the Irish Hills and surrounding areas, central California
          Geospatial_Data_Presentation_Form: point digital data
          Series_Information:
            Series_Name: Open-File Report
            Issue_Identification: 2012-1080
          Publication_Information:
            Publication_Place: Menlo Park, CA
            Publisher: U.S. Geological Survey
            Online Linkage: http://pubs.usgs.gov/of/2012/1080
  Description:
    Abstract: Helicopter magnetic data and physical properties of Irish Hills and surrounding areas, central California
      Digital Files:  The database includes an ASCII file containing gridded magnetic data, two ASCII files with point locations of the local 
maximum horizontal gradient derived from the magnetic data, and one file of physical property data.  This metadata file describes the physical property data.       
   Purpose: Magnetic map identifies magnetic features as a basis for geophysical interpretations.  
 Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -120.955000
      East_Bounding_Coordinate: -120.720000
      North_Bounding_Coordinate: 35.2872000
      South_Bounding_Coordinate: 35.1061000
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Victoria E Langenheim
        Contact_Organization: USGS WR GD
      Contact_Address:
        Address_Type: mailing address
        Address: 345 Middlefield Road Mail Stop 989
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
        Country: USA
      Contact_Voice_Telephone: 650-329-5313
      Contact_Facsimile_Telephone: 650-329-5133
      Contact_Electronic_Mail_Address: zulanger@usgs.gov
  Keywords:
    Theme:
      Theme_Keyword: magnetics
      Theme_Keyword: magnetic anomaly
      Theme_Keyword: magnetic susceptibility
      Theme_Keyword: remanent magnetization
    Place:
      Place_Keyword: central California
      Place_Keyword: Irish Hills
  Access_Constraints: none
  Use_Constraints: none
Data_Quality_Information:
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Accuracy of the point data is roughly 40 m, as well as the data can be located on a 1:24,000-scale topographic map
Overview_Description:
    Entity_and_Attribute_Overview:
      The data file is in ASCII format.  The data define point data with information as follows:
      Sample name 
      Latitude in decimal degrees (NAD27)
      Longitude in decimal degrees (NAD27) 
      Grain, saturated and bulk densities in kg/cubic meters 
      Susceptibility in SI units 
      Natural Remanent Magnetization (NRM) in A/m
      Koenisberger ratio Q (dimensionless)      
      Rock Type
      If available, NRM moment, NRM Declination (D), NRM Inclination (I), best fit D and I, polarity, and comment on location
Metadata_Reference_Information:
  Metadata_Date: 20120201
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Victoria Langenheim
        Contact_Organization: U.S. Geological Survey
      Contact_Position: geophysicist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 345 Middlefield Rd.
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
      Contact_Voice_Telephone: 650-329-5313
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile