Identification_Information:
  Citation:
    Citation_Information:
      Originator: Suzanne W. Nicholson 
      Originator: Connie L. Dicken
      Originator: John D. Horton
      Originator: Michael P. Foose
      Originator: Julia A.L. Mueller
      Originator: Rudi Hon
      Publication_Date: 2006
      Title: Preliminary Integrated Geologic Map Databases for the United States:  Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont
      Edition: version 1.0
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
        Issue_Identification: 2006-1272

      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: U.S. Geological Survey
      Online_Linkage: http://pubs.usgs.gov/of/2006/1272
  Description:
    Abstract: These metadata are specifically for the State of Rhode Island, one state in the national compilation of state geologic map databases.  The digital geologic state map data was prepared by the Rhode Island Geological Survey in 1994.  Subsequent editing of the spatial data by the USGS was limited to fitting a standardized state boundary to the data, standardizing the arc coding, reprojecting the data, and minor edits of arc or polygon attributes to conform with the paper map.
This open-file report is one of several that present the preliminary results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources of regional- and national-scale geologic maps are state geologic maps with scales ranging from 1:100,000 to 1:1,000,000.  Digital versions of these state maps form the core of what is presented here.  Because no adequate geologic map exists for the state of Alaska, it is being compiled in regional blocks that also form part of this national database. It is expected that this series will completed by approximately the end of 2007.  These maps and databases are being released in blocks of states or, in the case of Alaska, as compiled blocks of 1:250,000-scale quadrangles as chapters in this series.  For Alaska, formal maps as well as databases are being published here, whereas for the conterminous U.S. only state databases and preview graphics are presented, because published maps for most states already exist.  For Alaska these regional compilations will form the base for compiling a new geologic map of the state.  As documented in CONUSdocumentationNENJ.pdf, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii.
    Purpose: A primary goal of this work is to develop geologic map datasets with standardized structure and attribution.  The database design and standards are documented in CONUSdocumentationNENJ.pdf of this series.  The intent is that contiguous databases can be merged seamlessly and without any additional effort.  In addition to a common database structure, the conterminous U.S. state databases (the contiguous 48 states) have been fitted to a set of standard state boundaries so that, when states are merged, they match without slivers or overlap.  No attempt has been made to reconcile differences in mapping across state boundaries.
    Supplemental_Information:
      This database consists of up to five major Arc/Info GIS datasets for each state;
      - one: geologic map with formations,
      - two: faults (where present),
      - three: dikes (where present),
      - four: miscellaneous line features (where present),
      - five: miscellaneous point features (where present).
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2006
    Currentness_Reference: publication date

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: none planned

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -71.907675
      East_Bounding_Coordinate: -71.099608

      North_Bounding_Coordinate: 42.018398
      South_Bounding_Coordinate: 41.063767

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: geology
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: USA
      Place_Keyword: Rhode Island

    Theme:
      Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
      Theme_Keyword: 3100 - Vector
      Theme_Keyword: 3110 - ESRI
      Theme_Keyword: 3112 - export
      Theme_Keyword: 1100 - Geology
      Theme_Keyword: 1101 - General
    Place:
      Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
      Place_Keyword: US44 = Rhode Island
  Access_Constraints: none

  Use_Constraints:
    This database is not meant to be used or displayed at any scale other
    than 1:500,000.

    Any hardcopies utilizing these data sets shall clearly indicate
    their source.  If the licensee has modified the data in any way
    they are obligated to describe the types of modifications they
    have performed on the hardcopy map.  Licensee specifically agrees
    not to misrepresent these data sets, nor to imply that changes they
    made were approved by the U.S. Geological Survey.

  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Suzanne W. Nicholson

        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 12201 Sunrise Valley Dr.  MS954
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
        Country: USA
      Contact_Voice_Telephone: 703-648-6344
      Contact_Electronic_Mail_Address: swnich@usgs.gov

  Data_Set_Credit:
    State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis
    projects of the US Geological Survey Mineral Resources Program.

  Native_Data_Set_Environment:
    ARC/INFO version 8.3 and 9.1
    Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The values of the attributes ROCKTYPE1 and ROCKTYPE2 were assigned based on the information in the legends of the source maps (most of which are paper).  The definitions of these values are described in the draft document Geologic Map Classification version 6.1 (Johnson and others); available at the following website:  http://geology.usgs.gov/dm
  Logical_Consistency_Report: All internal polygons were checked for closure with vendor software and on hard copy plots.  Overshoots and undershoots have been deleted or corrected as appropriate.
  Completeness_Report: Bodies of water are classified as water, and the geologic units underlying them are not included in this coverage.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Accuracy of Rhode Island state boundary and those arcs intersecting it: The accuracy of the state boundary arcs is based on the 1:100,000 scale original data used to produce this boundary.  (Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf))

        Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Hermes, O.D
          Originator: Gromet, L.P.
          Originator: Murray, D.P.
          Originator: Hamidzada, N.A.
          Publication_Date: 1994
          Title: Geologic Map of Rhode Island
          Geospatial_Data_Presentation_Form: digital map
          Publication_Information:
            Publication_Place: Providence, Rhode Island 
            Publisher: Rhode Island Geographic Information System
          Online_Linkage: http://www.edc.uri.edu/rigis-spf/form.html
      Source_Scale_Denominator: 100,000
      Type_of_Source_Media: vector
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1994
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: rigeol
      Source_Contribution: provided geology for state map
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Bruce R. Johnson
          Publication_Date: unpublished
          Title: 1:100,000 Scale State Boundaries of the Conterminous United States
          Geospatial_Data_Presentation_Form: vector data
          Other_Citation_Details: Arc/INFO coverage developed by Bruce Johnson.  Derived from USGS 100,000-scale DLG boundary layer quadrangles.
      Source_Scale_Denominator: 100,000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1998
        Source_Currentness_Reference: unknown
      Source_Citation_Abbreviation: state boundaries
      Source_Contribution: provided linework of the conterminous state boundaries
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Bruce R. Johnson
          Publication_Date: unpublished
          Title: Geologic Map Unit Classification, ver. 6.1
          Geospatial_Data_Presentation_Form: unknown
          Other_Citation_Details: Document has been modified and is included in Appedices of the publication.
      Source_Scale_Denominator: none
      Type_of_Source_Media: online; http:/geology.usgs.gov/dm
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1998
        Source_Currentness_Reference: unknown
      Source_Citation_Abbreviation: lithclass
      Source_Contribution: Source of lithologic codes and specific rock names found in ROCKTYPE1 and ROCKTYPE2.
    Process_Step:
      Process_Description: The purpose of this standardization is to allow all SGMC covers to be seamlessly joined without any additional effort to form regional or national level digital maps. Note that for Alaska, the state is being compiled as blocks of 1:250k quadrangles that will ultimately be used to compile a new state map.  Douglas Stoeser (USGS) and Ric Wilson (USGS) are co-coordinators for the overall SGMC effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii.
      Process_Date: 2003 - 2006
    Process_Step:
      Process_Description:
        C.L. Dicken obtained the digital geologic map of Rhode Island from   Rhode Island Geographic Information System, http://www.edc.uri.edu/rigis-spf/Statewide/state.html#geology.     The coverage was re-projected into the following:

                projection:		Lambert Conformal Conic
                units:			meters
                datum:			NAD27
                standard parallel 1: 	33 0 0.000
                standard parallel 2: 	45 0 0.000
                central meridian:	-100 0 0.000
                reference latitude:	0 0 0.000
                false easting:		0.00000
                false northing:		0.00000

                

                (Note:  Attributes associated with the generation of the coverages were not deleted.
                PAT - shape, area, perimeter, coverage#, and coverage-id
                AAT - shape, fnode#, tnode#, lnode#, rnode#, length, coverage#, and coverage-id)

        All attributes were deleted except unit_label.
        The values from unit_label where then calculated into a new field called orig_label.
      Process_Date: 2006
    Process_Step:
      Process_Description:
        The relevant state outline (arcs) was removed from the coverage and replaced with the arcs from the 1:100,000 Scale State Boundaries of the Conterminous United States.

        This allows for a seamless fit of each state to a standard state boundary base.
      Process_Date: 2006
    Process_Step:
      Process_Description:
        The following attributes were exported from Filemaker as a .dbf:
        orig_label, map_symbol2, unit_link, reference_id, unit_age, rocktype1, and rocktype2.

        orig_label  reflects the original map symbol used on the source map

        map_symbol2  reflects map-symbol1 with the addition of a province number

        unit_link  is an auto generated field based on map-symbol2 and the state abbreviation (e.g. RI001) that produces a unique identifier for each map unit

        reference_id was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework and other references used to describe the age or lithologies of the unit.

        unit_age  was populated with general age assignment

        rocktype1  records dominant lithology (does not imply minimum percentage of abundance), using standardized data dictionary

        rocktype2  records second most dominant lithology, using standardized data dictionary



        The attributes were then converted using the following structure:

        item name:	orig_label
        width:		12
        output:		12
        type:		c

        item name:	sgmc_label
        width:		16
        output:		16
        type:		c

        item name:	unit_link
        width:		18
        output:		18
        type:		c

        item name:	source
        width:		6
        output:		8
        type:		c

        item name:	unit_age
        width:		60
        output:		60
        type:		c

        item name:	rocktype1
        width:		40
        output:		40
        type:		c

        item name:	rocktype2
        width:		40
        output:		40
        type:		c
      Process_Date: 2006
    Process_Step:
      Process_Description: Once the .dbf was in the correct format with standardized column widths and data structure, it was converted into a lookup table (.lut) in Arc/Info.  Then a joinitem was performed to join the look-up table to the polygon attribute table.  orig_label was used as the merge item.
      Process_Date: 2006
    Process_Step:
      Process_Description:
        Next, in preparing the uniform .aat file, the following items were added to the table:

        item name:  arc-code
        width:	3
        output:	3
        type:	i

        item name:  arc-para1
        width:	3
        output:	3
        type:	i

        item name:  arc-para2
        width:	3
        output:	3
        type:	i

        item name:  source
        width:	6
        output:	8
        type:	c

      Process_Date: 2006
    Process_Step:
      Process_Description:
        Arc-code was populated using the paper map source to tag the lines using the AAT line type data dictionary (see CONUSdocumentationNENJ.pdf in this series).

        Arc-para1 was populated when additional information was available such as identifying the upthrown side of a fault or direction of thrusting on a fault. (see CONUSdocumentationNENJ.pdf)

        Arc-para2 is a scratch field that is used mostly in Alaska.

        Source was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework.

      Process_Date: 2006
    Process_Step:
      Process_Description:
        Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (RIgeol_lcc.e00).

        Then it was unprojected into geographic coordinates and exported again (RIgeol_dd.e00).
      Process_Date: 2006
    Process_Step:
      Process_Description: Faults were extracted from the coverage and created a separate fault coverage (RIfaults_lcc) and then exported (RIfaults_lcc.e00).
      Process_Date: 2006
    Process_Step:
      Process_Description: Finally, the geology lines, geology polygons and faults were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection.
      Process_Date: 2006
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Lambert Conformal Conic
        Lambert_Conformal_Conic:
          Standard_Parallel: 33
          Standard_Parallel: 45
          Longitude_of_Central_Meridian: -100.0
          Latitude_of_Projection_Origin: 0
          False_Easting: 0.00000
          False_Northing: 0.00000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.01
          Ordinate_Resolution: 0.01
        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:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: RI_geol.pat
      Entity_Type_Definition: Polygon attribute table for the Rhode Island geologic coverage.
      Entity_Type_Definition_Source: ESRI
    Attribute:
      Attribute_Label: ORIG_LABEL
      Attribute_Definition:
        unmodified map unit symbol from source cover.

        type: character
        width: 12
        output width: 12
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Ch
          Enumerated_Domain_Value_Definition: Hoppin Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Cpc+OCcj
          Enumerated_Domain_Value_Definition: Pirate Cove Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsa
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - alkali-feldspar granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsd
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - diorite/gabbro
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsfg
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsg
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsgd
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsm
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - monzonite/monzodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsr
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - rhyolite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsv
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: DZc
          Enumerated_Domain_Value_Definition: cumberlandite
        Enumerated_Domain:
          Enumerated_Domain_Value: DZgd
          Enumerated_Domain_Value_Definition: gabbro/diorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Jm
          Enumerated_Domain_Value_Definition: monchiquite
        Enumerated_Domain:
          Enumerated_Domain_Value: Kr
          Enumerated_Domain_Value_Definition: Raritan Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: MDca
          Enumerated_Domain_Value_Definition: alkali-feldspar granite of Cumberland
        Enumerated_Domain:
          Enumerated_Domain_Value: OCcdi
          Enumerated_Domain_Value_Definition: Conanicut Group - Dutch Island Harbor Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCcep
          Enumerated_Domain_Value_Definition: Conanicut Group - East Passage Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCcj+OCcfb
          Enumerated_Domain_Value_Definition: Conanicut Group - Fort Burnside Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCcj
          Enumerated_Domain_Value_Definition: Conanicut Group - Jamestown Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCcu
          Enumerated_Domain_Value_Definition: Conanicut Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: OCmn
          Enumerated_Domain_Value_Definition: minette
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbd
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Dighton Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbpo
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Pondville Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbpu
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Purgatory Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbr
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Rhode Island Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbs
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Sachuest Arkose
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnbw
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Wamsutta Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: PZmc
          Enumerated_Domain_Value_Definition: Other metasedimentary rocks - metaclastic rock, undivided
        Enumerated_Domain:
          Enumerated_Domain_Value: Pngf
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Png
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnlg
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - leucocratic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnpg
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Td
          Enumerated_Domain_Value_Definition: diabase
        Enumerated_Domain:
          Enumerated_Domain_Value: Tvq
          Enumerated_Domain_Value_Definition: vein quartz
        Enumerated_Domain:
          Enumerated_Domain_Value: water
          Enumerated_Domain_Value_Definition: Water
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbm
          Enumerated_Domain_Value_Definition: Blackstone Group - greenstone, amphibolite, serpentinite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbq
          Enumerated_Domain_Value_Definition: Blackstone Group - quartzite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbs
          Enumerated_Domain_Value_Definition: Blackstone Group - epidote and biotite schist
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbu
          Enumerated_Domain_Value_Definition: Blackstone Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zdg
          Enumerated_Domain_Value_Definition: Dedham Granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zeagg
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - augen granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zefg
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zefv
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - felsic volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zeg
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zegd
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zegg
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zem
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - mafic/intermediate rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zha
          Enumerated_Domain_Value_Definition: Harmony Group - Absalona Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zhn
          Enumerated_Domain_Value_Definition: Harmony Group - Nipsachuck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zhw
          Enumerated_Domain_Value_Definition: Harmony Group - Woonasquatucket Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zms
          Enumerated_Domain_Value_Definition: mica schist
        Enumerated_Domain:
          Enumerated_Domain_Value: Znfa
          Enumerated_Domain_Value_Definition: Newport Group - Fort Adams Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Znnn
          Enumerated_Domain_Value_Definition: Newport Group - Newport Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Znpn
          Enumerated_Domain_Value_Definition: Newport Group - Price Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zp
          Enumerated_Domain_Value_Definition: Plainfield Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsag
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - alaskite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zseg
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsepg
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsgg
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsmg
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - mafic/intermediate gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zwm
          Enumerated_Domain_Value_Definition: Waterford Group - Mamacoke Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zwr
          Enumerated_Domain_Value_Definition: Waterford Group - Rope Ferry Gneiss
    Attribute:
      Attribute_Label: SGMC_LABEL
      Attribute_Definition:
        orig_label + ;n where n= province number (n=0 if no province number)

        type: character
        width: 16
        output width: 16
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: CAh;0
          Enumerated_Domain_Value_Definition: Hoppin Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: CApc;0
          Enumerated_Domain_Value_Definition: Pirate Cove Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsa;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - alkali-feldspar granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsd;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - diorite/gabbro
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsfg;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsg;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsgd;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsm;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - monzonite/monzodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsr;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - rhyolite
        Enumerated_Domain:
          Enumerated_Domain_Value: Dsv;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: DZc;0
          Enumerated_Domain_Value_Definition: cumberlandite
        Enumerated_Domain:
          Enumerated_Domain_Value: DZgd;0
          Enumerated_Domain_Value_Definition: gabbro/diorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Jm;0
          Enumerated_Domain_Value_Definition: monchiquite
        Enumerated_Domain:
          Enumerated_Domain_Value: Kr;0
          Enumerated_Domain_Value_Definition: Raritan Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: MDca;0
          Enumerated_Domain_Value_Definition: alkali-feldspar granite of Cumberland
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAcdi;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Dutch Island Harbor Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAcep;0
          Enumerated_Domain_Value_Definition: Conanicut Group - East Passage Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAcfb;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Fort Burnside Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAcj;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Jamestown Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAcu;0
          Enumerated_Domain_Value_Definition: Conanicut Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: OCAmn;0
          Enumerated_Domain_Value_Definition: minette
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbd;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Dighton Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbpo;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Pondville Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbpu;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Purgatory Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbr;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Rhode Island Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbs;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Sachuest Arkose
        Enumerated_Domain:
          Enumerated_Domain_Value: PAnbw;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Wamsutta Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: PAZmc;0
          Enumerated_Domain_Value_Definition: Other metasedimentary rocks - metaclastic rock, undivided
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnfg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Png;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnlg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - leucocratic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Pnpg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: TRd;0
          Enumerated_Domain_Value_Definition: diabase
        Enumerated_Domain:
          Enumerated_Domain_Value: TRvq;0
          Enumerated_Domain_Value_Definition: vein quartz
        Enumerated_Domain:
          Enumerated_Domain_Value: water;0
          Enumerated_Domain_Value_Definition: Water
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbm;0
          Enumerated_Domain_Value_Definition: Blackstone Group - greenstone, amphibolite, serpentinite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbq;0
          Enumerated_Domain_Value_Definition: Blackstone Group - quartzite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbs;0
          Enumerated_Domain_Value_Definition: Blackstone Group - epidote and biotite schist
        Enumerated_Domain:
          Enumerated_Domain_Value: Zbu;0
          Enumerated_Domain_Value_Definition: Blackstone Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zdg;0
          Enumerated_Domain_Value_Definition: Dedham Granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zeag;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - augen granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zefg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zefv;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - felsic volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zeg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zegd;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zegg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zem;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - mafic/intermediate rock
        Enumerated_Domain:
          Enumerated_Domain_Value: Zha;0
          Enumerated_Domain_Value_Definition: Harmony Group - Absalona Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zhn;0
          Enumerated_Domain_Value_Definition: Harmony Group - Nipsachuck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zhw;0
          Enumerated_Domain_Value_Definition: Harmony Group - Woonasquatucket Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zms;0
          Enumerated_Domain_Value_Definition: mica schist
        Enumerated_Domain:
          Enumerated_Domain_Value: Znfa;0
          Enumerated_Domain_Value_Definition: Newport Group - Fort Adams Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Znnn;0
          Enumerated_Domain_Value_Definition: Newport Group - Newport Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Znpn;0
          Enumerated_Domain_Value_Definition: Newport Group - Price Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zp;0
          Enumerated_Domain_Value_Definition: Plainfield Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsag;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - alaskite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zseg;0
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsepg;0
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsgg;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zsmg;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - mafic/intermediate gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: Zwm;0
          Enumerated_Domain_Value_Definition: Waterford Group - Mamacoke Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Zwr;0
          Enumerated_Domain_Value_Definition: Waterford Group - Rope Ferry Gneiss
    Attribute:
      Attribute_Label: unit_link
      Attribute_Definition:
        composite map label = ST + sgmc_label
        This creates a unique identifier for every unit in the CONUS (continental United States) covers.

        type: character
        width: 18
        output width: 18
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: RICAh;0
          Enumerated_Domain_Value_Definition: Hoppin Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RICApc;0
          Enumerated_Domain_Value_Definition: Pirate Cove Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsa;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - alkali-feldspar granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsd;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - diorite/gabbro
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsfg;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsg;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsgd;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsm;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - monzonite/monzodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsr;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - rhyolite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDsv;0
          Enumerated_Domain_Value_Definition: Scituate Igneous Suite - volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDZc;0
          Enumerated_Domain_Value_Definition: cumberlandite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIDZgd;0
          Enumerated_Domain_Value_Definition: gabbro/diorite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIJm;0
          Enumerated_Domain_Value_Definition: monchiquite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIKr;0
          Enumerated_Domain_Value_Definition: Raritan Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIMDca;0
          Enumerated_Domain_Value_Definition: alkali-feldspar granite of Cumberland
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAcdi;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Dutch Island Harbor Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAcep;0
          Enumerated_Domain_Value_Definition: Conanicut Group - East Passage Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAcfb;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Fort Burnside Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAcj;0
          Enumerated_Domain_Value_Definition: Conanicut Group - Jamestown Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAcu;0
          Enumerated_Domain_Value_Definition: Conanicut Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: RIOCAmn;0
          Enumerated_Domain_Value_Definition: minette
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbd;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Dighton Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbpo;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Pondville Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbpu;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Purgatory Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbr;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Rhode Island Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbs;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Sachuest Arkose
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAnbw;0
          Enumerated_Domain_Value_Definition: Narragansett Bay Group - Wamsutta Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPAZmc;0
          Enumerated_Domain_Value_Definition: Other metasedimentary rocks - metaclastic rock, undivided
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPnfg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPng;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPnlg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - leucocratic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIPnpg;0
          Enumerated_Domain_Value_Definition: Narragansett Pier Plutonic Suite - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RITRd;0
          Enumerated_Domain_Value_Definition: diabase
        Enumerated_Domain:
          Enumerated_Domain_Value: RITRvq;0
          Enumerated_Domain_Value_Definition: vein quartz
        Enumerated_Domain:
          Enumerated_Domain_Value: RIwater;0
          Enumerated_Domain_Value_Definition: Water
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZbm;0
          Enumerated_Domain_Value_Definition: Blackstone Group - greenstone, amphibolite, serpentinite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZbq;0
          Enumerated_Domain_Value_Definition: Blackstone Group - quartzite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZbs;0
          Enumerated_Domain_Value_Definition: Blackstone Group - epidote and biotite schist
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZbu;0
          Enumerated_Domain_Value_Definition: Blackstone Group - undifferentiated rock
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZdg;0
          Enumerated_Domain_Value_Definition: Dedham Granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZeag;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - augen granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZefg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - fine-grained granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZefv;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - felsic volcaniclastic rock
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZeg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZegd;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granodiorite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZegg;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZem;0
          Enumerated_Domain_Value_Definition: Esmond Igneous Suite - mafic/intermediate rock
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZha;0
          Enumerated_Domain_Value_Definition: Harmony Group - Absalona Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZhn;0
          Enumerated_Domain_Value_Definition: Harmony Group - Nipsachuck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZhw;0
          Enumerated_Domain_Value_Definition: Harmony Group - Woonasquatucket Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZms;0
          Enumerated_Domain_Value_Definition: mica schist
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZnfa;0
          Enumerated_Domain_Value_Definition: Newport Group - Fort Adams Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZnnn;0
          Enumerated_Domain_Value_Definition: Newport Group - Newport Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZnpn;0
          Enumerated_Domain_Value_Definition: Newport Group - Price Neck Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZp;0
          Enumerated_Domain_Value_Definition: Plainfield Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZsag;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - alaskite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZseg;0
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZsepg;0
          Enumerated_Domain_Value_Definition: Granites of southeastern Rhode Island - porphyritic granite
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZsgg;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - granite gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZsmg;0
          Enumerated_Domain_Value_Definition: Sterling Igneous Suite - mafic/intermediate gneiss
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZwm;0
          Enumerated_Domain_Value_Definition: Waterford Group - Mamacoke Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: RIZwr;0
          Enumerated_Domain_Value_Definition: Waterford Group - Rope Ferry Gneiss
    Attribute:
      Attribute_Label: source
      Attribute_Definition:
        An alphanumeric code (e.g. US001) that designates the source material used.

        type: character
        width: 6
        output width: 8
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: RI001
          Enumerated_Domain_Value_Definition: Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., 1994, Geologic Map of Rhode Island, Rhode Island Geographic Information System, http://www.edc.uri.edu/rigis-spf/Statewide/state.html#geology, scale 1:100,000. 
        Enumerated_Domain:
          Enumerated_Domain_Value: US001
          Enumerated_Domain_Value_Definition: Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf)
    Attribute:
      Attribute_Label: unit_age
      Attribute_Definition:
        geologic age from the source map used.

        type: character
        width: 60
        output width: 60
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Cambrian
          Enumerated_Domain_Value: Cambro-Ordovician
          Enumerated_Domain_Value: Cambro-Ordovician? to Carboniferous?
          Enumerated_Domain_Value: Cretaceous
          Enumerated_Domain_Value: Devonian
          Enumerated_Domain_Value: Devonian? or Mississippian?
          Enumerated_Domain_Value: Holocene
          Enumerated_Domain_Value: Jurassic
          Enumerated_Domain_Value: Late Proterozoic
          Enumerated_Domain_Value: Late Proterozoic? or older?
          Enumerated_Domain_Value: Late Proterozoic? to Devonian?
          Enumerated_Domain_Value: Pennsylvanian
          Enumerated_Domain_Value: Pennsylvanian? or Late Proterozoic?
          Enumerated_Domain_Value: Permian
          Enumerated_Domain_Value: Triassic?
          Enumerated_Domain_Value: unknown
    Attribute:
      Attribute_Label: rocktype1
      Attribute_Definition:
        The predominant lithology found in the formation.

        type: character
        width: 40
        output width: 40
      Attribute_Definition_Source: Johnson Lith Class 6.1a
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: alkali-granite (alaskite)
          Enumerated_Domain_Value: arenite
          Enumerated_Domain_Value: ash-flow tuff
          Enumerated_Domain_Value: augen gneiss
          Enumerated_Domain_Value: biotite gneiss
          Enumerated_Domain_Value: clay or mud
          Enumerated_Domain_Value: conglomerate
          Enumerated_Domain_Value: diabase
          Enumerated_Domain_Value: felsic gneiss
          Enumerated_Domain_Value: gneiss
          Enumerated_Domain_Value: granite
          Enumerated_Domain_Value: granitic gneiss
          Enumerated_Domain_Value: granodiorite
          Enumerated_Domain_Value: greenstone
          Enumerated_Domain_Value: lamprophyre
          Enumerated_Domain_Value: mafic gneiss
          Enumerated_Domain_Value: marble
          Enumerated_Domain_Value: meta-conglomerate
          Enumerated_Domain_Value: mica schist
          Enumerated_Domain_Value: migmatite
          Enumerated_Domain_Value: olistostrome
          Enumerated_Domain_Value: phyllite
          Enumerated_Domain_Value: plutonic rock (phaneritic)
          Enumerated_Domain_Value: quartz diorite
          Enumerated_Domain_Value: quartz monzonite
          Enumerated_Domain_Value: quartzite
          Enumerated_Domain_Value: rhyolite
          Enumerated_Domain_Value: sandstone
          Enumerated_Domain_Value: siltstone
          Enumerated_Domain_Value: tonalite
          Enumerated_Domain_Value: troctolite
          Enumerated_Domain_Value: tuff
          Enumerated_Domain_Value: unknown
          Enumerated_Domain_Value: water
    Attribute:
      Attribute_Label: rocktype2
      Attribute_Definition:
        The second most predominant lithology in the formation.

        type: character
        width: 40
        output width: 40
      Attribute_Definition_Source: Johnson Lith Class 6.1
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: amphibolite
          Enumerated_Domain_Value: arenite
          Enumerated_Domain_Value: argillite
          Enumerated_Domain_Value: augen gneiss
          Enumerated_Domain_Value: diorite
          Enumerated_Domain_Value: gneiss
          Enumerated_Domain_Value: granitic gneiss
          Enumerated_Domain_Value: granodiorite
          Enumerated_Domain_Value: ignimbrite
          Enumerated_Domain_Value: metasedimentary rock
          Enumerated_Domain_Value: mica schist
          Enumerated_Domain_Value: monzonite
          Enumerated_Domain_Value: pegmatite
          Enumerated_Domain_Value: phyllite
          Enumerated_Domain_Value: quartz diorite
          Enumerated_Domain_Value: quartzite
          Enumerated_Domain_Value: sand
          Enumerated_Domain_Value: sandstone
          Enumerated_Domain_Value: schist
          Enumerated_Domain_Value: shale
          Enumerated_Domain_Value: siltstone
          Enumerated_Domain_Value: slate
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: RI_geol.aat
      Entity_Type_Definition: Arc attribute table for Rhode Island geologic coverage.
      Entity_Type_Definition_Source: ESRI
    Attribute:
      Attribute_Label: arc-code
      Attribute_Definition:
        Unique identifier for the line feature

        type: integer
        width: 3
        output width: 3
      Attribute_Definition_Source: AAT data dictionary
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: contact, location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: contact, location inferred, queried
        Enumerated_Domain:
          Enumerated_Domain_Value: 4
          Enumerated_Domain_Value_Definition: normal fault, location certain, digitized with upthrown side on the right (code of 1 added to ARC-PARA1 where U/D is designated in source)
        Enumerated_Domain:
          Enumerated_Domain_Value: 6
          Enumerated_Domain_Value_Definition: normal fault, location inferred, queried, digitized with upthrown side on the right (code of 1 added to ARC-PARA1 where U/D is designated in source)
        Enumerated_Domain:
          Enumerated_Domain_Value: 7
          Enumerated_Domain_Value_Definition: shoreline or riverbank
        Enumerated_Domain:
          Enumerated_Domain_Value: 10
          Enumerated_Domain_Value_Definition: thrust fault, location certain, teeth on right from origin (angle of thrusting added to ARC-PARA1 where designated in source)
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition: thrust fault, location inferred, queried, teeth on right from origin (angle of thrusting added to ARC-PARA1 where designated in source)
        Enumerated_Domain:
          Enumerated_Domain_Value: 30
          Enumerated_Domain_Value_Definition: fault, sense of displacement unknown or undefined, location certain.
        Enumerated_Domain:
          Enumerated_Domain_Value: 32
          Enumerated_Domain_Value_Definition: fault, sense of displacement unknown or undefined, location inferred or queried.
        Enumerated_Domain:
          Enumerated_Domain_Value: 94
          Enumerated_Domain_Value_Definition: shear zone, certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 99
          Enumerated_Domain_Value_Definition: bounding line (neatline) of coverage
        Enumerated_Domain:
          Enumerated_Domain_Value: 113
          Enumerated_Domain_Value_Definition: strike slip fault, motion unknown, location certain.
        Enumerated_Domain:
          Enumerated_Domain_Value: 115
          Enumerated_Domain_Value_Definition: strike slip fault, motion unknown, location inferred.
        Enumerated_Domain:
          Enumerated_Domain_Value: 124
          Enumerated_Domain_Value_Definition: state boundary
    Attribute:
      Attribute_Label: arc-para1
      Attribute_Definition:
        Used for "decorated" lines where additional information is needed.

        type: integer
        width: 3
        output width: 3
      Attribute_Definition_Source: AAT data dictionary
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: no additional information
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: U/D designated in source.
    Attribute:
      Attribute_Label: arc-para2
      Attribute_Definition:
        "Scratch" field used mostly in Alaska.

        type: integer
        width: 3
        output width: 3
      Attribute_Definition_Source: AAT data dictionary
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: no additional information
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Narragansett Basin border fault
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: probable fault
    Attribute:
      Attribute_Label: source
      Attribute_Definition:
        An alphanumeric code (e.g. US001) that designates the source material used.

        type: character
        width: 6
        output width: 8
      Attribute_Definition_Source: Doug Stoeser (USGS)
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: RI001
          Enumerated_Domain_Value_Definition: Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., 1994, Geologic Map of Rhode Island, Rhode Island Geographic Information System, http://www.edc.uri.edu/rigis-spf/Statewide/state.html#geology, scale 1:100,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: RI101
          Enumerated_Domain_Value_Definition: C.L. Dicken flipped arcs.
        Enumerated_Domain:
          Enumerated_Domain_Value: US001
          Enumerated_Domain_Value_Definition: Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf)
  Overview_Description:
    Entity_and_Attribute_Overview:
      Coding for polygon attributes:

      NAME:           FEATURE:
      orig_label   unmodified map unit symbols from source cover
      sgmc_label   orig_label modified for standard geologic age symbols and an
      integer code added for province
      unit_link    sgmc_label and a state code identifier
      source       reference to source of data
      unit_age     geologic age
      rocktype1    predominant lithology
      rocktype2    second most predominant lithology

      Coding for arc attributes:

      NAME:           FEATURE:
      arc-code     unique integer identifier
      arc-para1    used where additional information is needed
      arc-para2    scratch field
      source       reference to source of data

      Coding for point attributes:

      NAME:           FEATURE:
      point_feature  name of feature on map
      source         reference to source of data

      Coding for dikes (special arcs) attributes:

      NAME:           FEATURE:
      orig_label   unmodified map unit symbols from source cover
      sgmc_label   orig_label modified for standard geologic age symbols and an
      integer code added for province
      arc-code     unique integer identifier
      dike_lith    general lithology
      dike_age     geologic age
      source       reference to source of data

    Entity_and_Attribute_Detail_Citation: ESRI
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization:
          U.S. Geological Survey Information Services
          Reston-ESIC
      Contact_Address:
        Address_Type: mailing and physical address
        Address:
          U.S. Geological Survey
          507 National Center
        City: Reston
        State_or_Province: Virginia
        Postal_Code: 20192
        Country: USA
      Contact_Voice_Telephone:
        1-888-ASK-USGS
        or
        1-703-648-5953
      Contact_Electronic_Mail_Address: http://www.usgs.gov/contact/
  Distribution_Liability:
    Any use of trade, product, or firm names is for
    descriptive purposes only and does not imply endorsement by the USGS.
    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 1:500,000.
  Resource_Description:
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARC/INFO export
        Format_Version_Number: 9.0
        Format_Information_Content: Geologic units and structural features
        File_Decompression_Technique: gzip and tar
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/
    Fees: none
Metadata_Reference_Information:
  Metadata_Date: 20060130
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Connie L. Dicken
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 12201 Sunrise Valley Dr.  MS954
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
        Country: USA
      Contact_Voice_Telephone: 703-648-6482
      Contact_Electronic_Mail_Address: cdicken@usgs.gov
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata ("CSDGM version 2")
  Metadata_Standard_Version: FGDC-STD-001-1998