Metadata:

  Identification_Information:

    Citation:

      Citation_Information:

        Originator: Douglas B. Stoeser

        Originator: Gregory N. Green

        Originator: Laurie C. Morath

        Originator: William D. Heran

        Originator: Anna B. Wilson

        Originator: David W. Moore

        Originator: Bradley S. Van Gosen

        Publication_Date: 2005

        Title:

          Preliminary Integrated Geologic Map Databases for the United States

          Central States: Montana, Wyoming, Colorado, New Mexico,

          Kansas, Oklahoma, Texas, Missouri, Arkansas, and Louisiana.

          - The State of Louisiana

        Edition: version 1.0

        Geospatial_Data_Presentation_Form: map

        Series_Information:

          Series_Name: U.S. Geological Survey Open-File Report

          Issue_Identification: 2005-1351

        Publication_Information:

          Publication_Place: Denver, CO

          Publisher: U.S. Geological Survey

        Online_Linkage: http://pubs.usgs.gov/of/2005/1351/

        Larger_Work_Citation:

          Citation_Information:

            Originator: Douglas B. Stoeser

            Originator: Gregory N. Green

            Originator: Laurie C. Morath

            Originator: William D. Heran

            Originator: Anna B. Wilson

            Originator: David W. Moore

            Originator: Bradley S. Van Gosen

            Publication_Date: 2005

            Title:

              Preliminary Integrated Geologic Map Databases for the United States

              Central States: Montana, Wyoming, Colorado, New Mexico, Kansas,

              Oklahoma, Texas, Missouri, Arkansas, and Louisiana.

            Edition: version 1.0

            Geospatial_Data_Presentation_Form: map

            Series_Information:

              Series_Name: U.S. Geological Survey Open-File Report

              Issue_Identification: 1351

            Publication_Information:

              Publication_Place: Reston, VA

              Publisher: U.S. Geological Survey

            Online_Linkage: http://pubs.usgs.gov/of/2005/1351/

    Description:

      Abstract:

        This open-file report presents the 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 geo-

        environmental 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 Chapter A, 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 Chapter A 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 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: 2005

      Currentness_Reference: publication date

 

    Status:

      Progress: Complete

      Maintenance_and_Update_Frequency: none planned

 

    Spatial_Domain:

      Bounding_Coordinates:

        West_Bounding_Coordinate: -94.10

        East_Bounding_Coordinate: -88.70

        North_Bounding_Coordinate: 33.10

        South_Bounding_Coordinate: 28.80

 

    Keywords:

      Theme:

        Theme_Keyword_Thesaurus: none

        Theme_Keyword: geology

      Place:

        Place_Keyword_Thesaurus: none

        Place_Keyword: USA

        Place_Keyword: Louisiana

 

      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: US22 = Louisiana

    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: Gregory N. Green

          Contact_Organization: U.S. Geological Survey

        Contact_Address:

          Address_Type: mailing and physical address

          Address: MS 973, USGS, Denver Federal Center

          City: Denver

          State_or_Province: CO

          Postal_Code: 80225

          Country: USA

        Contact_Voice_Telephone: 303-236-5390

        Contact_Electronic_Mail_Address: ggreen@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

      ArcView 3.2

  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:

          The geologic map was digitized from compilations ranging in scale from 1:1,000,000 to 1:100,000

          and is an accurate representation of the source maps.  It is intended to be used at scales

          ranging from 1:1,000,000 to 1:500,000. Display at significantly larger scales may produce small

          errors in locations of contacts or faults relative to features contained in other data sets.

          Accuracy of Louisiana state boundary and those arcs intersecting it: The accuracy of the

          state boundary arcs is based on the 1:100000 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, Chapter A))

          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:

              United States Geological Survey, Biological Research Division's,

              National Wetlands Research Center

            Publication_Date: 1998

            Title: Digital Overlay of the Geologic Map of Louisiana

            Geospatial_Data_Presentation_Form: map

            Series_Information:

              Series_Name: n/a

              Issue_Identification: Product Id USGS-NWRC 1984-02-0001

            Publication_Information:

              Publication_Place: Lafayette, Louisiana, United States

              Publisher:

                United States Geological Survey, Biological Resources

                Division's,  National Wetlands Research Center

            Online_Linkage:  http://www.nwrc.usgs.gov/

        Source_Scale_Denominator: 5000000

        Type_of_Source_Media: online

        Source_Time_Period_of_Content:

          Time_Period_Information:

            Single_Date/Time:

              Calendar_Date: 1998

          Source_Currentness_Reference: publication date

        Source_Citation_Abbreviation: LA001

        Source_Contribution: Digital geologic map of the state of Louisiana

 

      Source_Information:

        Source_Citation:

          Citation_Information:

            Originator: Gregory N. Green

            Publication_Date: 2005

            Title: Digital Overlay of the Geologic Map of Louisiana, fault Layer

            Geospatial_Data_Presentation_Form: map

            Series_Information:

              Series_Name: U.S. Geological Survey Open-File Report

              Issue_Identification: 2005-1351

            Publication_Information:

              Publication_Place: Denver, CO

              Publisher: U.S. Geological Survey

            Online_Linkage: http://pubs.usgs.gov/of/2005/1351/

        Source_Scale_Denominator: 5000000

        Type_of_Source_Media: online

        Source_Time_Period_of_Content:

          Time_Period_Information:

            Single_Date/Time:

              Calendar_Date: 2005

          Source_Currentness_Reference: publication date

        Source_Citation_Abbreviation: LA002

        Source_Contribution: Digital geologic map of the state of Louisiana, fault layer

 

      Source_Information:

        Source_Citation:

          Citation_Information:

            Originator: Bruce R. Johnson

            Title: 1:100,000 Scale State Boundaries of the Conterminous United States

            Geospatial_Data_Presentation_Form: vector digital data

            Publication_Date: unpublished material

        Source_Scale_Denominator: 100,000

        Type_of_Source_Media: online

        Source_Time_Period_of_Content:

          Time_Period_Information:

            Single_Date/Time:

              Calendar_Date: 199808

          Source_Currentness_Reference: unknown

        Source_Citation_Abbreviation: US001

        Source_Contribution: Provided linework for state boundaries

 

      Source_Information:

        Source_Citation:

          Citation_Information:

            Originator: Bruce R. Johnson

            Publication_Date: unpublished material

            Title: Geologic Map Unit Classification, ver. 6.1

            Geospatial_Data_Presentation_Form: document

        Type_of_Source_Media: online;  http://geology.usgs.gov/dm

        Source_Time_Period_of_Content:

          Time_Period_Information:

            Single_Date/Time:

              Calendar_Date: unknown

          Source_Currentness_Reference: unknown

        Source_Citation_Abbreviation: Johnson Lith Class 6.1

        Source_Contribution: Classification scheme used for lithology.

      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 and Ric Wilson 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 - 2004

      Process_Step:

        Process_Description:

          G.N. Green obtained the digital geologic map of Louisiana from the website:

          http://www.nwrc.usgs.gov/

 

          Re-projected the coverage 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:                       0.000

          false northing:                      0.000

 

          All attributes were deleted except GEOLOGY_CODE.

 

          (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)

 

          The values from GEOLOGY_CODE where then calculated into a new field called ORIG_LABEL.

        Process_Date: 20040402

      Process_Step:

        Process_Description:

          The following attributes were exported from Filemaker as a comma delimited file

 

          map_symbol1

          map_symbol2

          unit_link

          reference_id

          unit_age

          rocktype1

          rocktype2

 

          The attributes were then loaded into INFO with the following structures:

 

          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: 20040404

      Process_Step:

        Process_Description:

          Once the .csv was loaded, it was joined in Arc/Info with the joinitem command.

          orig_label as the related item.

        Process_Date: 20040404

      Process_Step:

        Process_Description:

          Once the .pat file was correct, the .aat file was addressed.  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: 20040405

      Process_Step:

        Process_Description:

          Arc-code was populated using the digital map source to tag the lines using the AAT line type

          data dictionary.

          Arc-para1 was populated when additional information was available such as upthrown side of

          a fault or angle of thrusting on a fault.

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

          Source was populated with code that designates the source used for the linework; typically

          the paper map.

        Process_Date: 20040405

  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: la_geol.pat

        Entity_Type_Definition: Polygon attribute table for the Louisiana geologic coverage.

        Entity_Type_Definition_Source: ESRI

      Attribute:

        Attribute_Label: orig_label

        Attribute_Definition: unmodified map unit symbol from source cover.

        Attribute_Definition_Source: Doug Stoeser

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: Qal

            Enumerated_Domain_Value_Definition: ALLUVIUM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qnl

            Enumerated_Domain_Value_Definition: NATURAL LEVEES

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qdf

            Enumerated_Domain_Value_Definition: DELTA PLAIN, FRESH MARSH

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qds

            Enumerated_Domain_Value_Definition: DELTA PLAIN, SALINE MARSH

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qcf

            Enumerated_Domain_Value_Definition: CHENIER PLAIN, FRESH MARSH

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qcs

            Enumerated_Domain_Value_Definition: CHENIER PLAIN, SALINE MARSH

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qtd

            Enumerated_Domain_Value_Definition: DEWEYVILLE TERRACE

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qbs

            Enumerated_Domain_Value_Definition: BRAIDED STREAM TERRACES

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qtp

            Enumerated_Domain_Value_Definition: PRAIRIE TERRACES

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qti

            Enumerated_Domain_Value_Definition: INTERMEDIATE TERRACES

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Qth

            Enumerated_Domain_Value_Definition: HIGH TERRACES

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIIfb

            Enumerated_Domain_Value_Definition: BLOUNTS CREEK MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIfcc

            Enumerated_Domain_Value_Definition: CASTOR CREEK MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIfw

            Enumerated_Domain_Value_Definition: WILLAMSON CREEK MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIfd

            Enumerated_Domain_Value_Definition: DOUGH HILLS MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIfcb

            Enumerated_Domain_Value_Definition: CARNAHAN BAYOU MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: MIfl

            Enumerated_Domain_Value_Definition: LENA MEMBER OF FLEMING FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: OGc

            Enumerated_Domain_Value_Definition: CATAHOULA FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: OGv

            Enumerated_Domain_Value_Definition: VICKBURG GROUP (UNDIFFERENTIATED)

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: EOj

            Enumerated_Domain_Value_Definition: JACKSON GROUP (UNDIFFERENTIATED)

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: EOcf

            Enumerated_Domain_Value_Definition: COCKFIELD FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: EOcm

            Enumerated_Domain_Value_Definition: COOK MOUNTAIN FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: EOcs

            Enumerated_Domain_Value_Definition: SPARTA FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: EOcr

            Enumerated_Domain_Value_Definition: CANE RIVER FM

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: PNEOw

            Enumerated_Domain_Value_Definition: WILLCOX GROUP (UNDIFFERENTIATED)

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: PNm

            Enumerated_Domain_Value_Definition: MIDWAY GROUP (UNDIFFERENTIATED) 

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Ku

            Enumerated_Domain_Value_Definition: UPPER CRETACEOUS

            Enumerated_Domain_Value_Definition_Source: n/a

      

      Attribute:

        Attribute_Label: sgmc_label

        Attribute_Definition: sgmc_label = orig_label + ;n where n= province number (n=0 if no province)

        Attribute_Definition_Source: Doug Stoeser

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: n/a

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

 

      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.

        Attribute_Definition_Source: Doug Stoeser

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: n/a

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

 

      Attribute:

        Attribute_Label: source

        Attribute_Definition: reference to the source used

        Attribute_Definition_Source: Doug Stoeser

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: LA001

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source:

              United States Geological Survey, Biological Research Division's, National Wetlands

              Research Center, 1998, Overlay of the Geologic Map of Louisiana, Geographic

              NAD83, NWRC (1998) [geology], U.S. Geological Survey

              online at http://www.nwrc.gov/sdms/data

 

      Attribute:

        Attribute_Label: unit_age

        Attribute_Definition: geologic age from the source map used.

        Attribute_Definition_Source: Doug Stoeser

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: Quaternary

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Miocene

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Oligocene

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Eocene

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Paleocene

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: Cretaceous

            Enumerated_Domain_Value_Definition: geologic age

            Enumerated_Domain_Value_Definition_Source: n/a

 

      Attribute:

        Attribute_Label: rocktype1

        Attribute_Definition: The predominant lithology found in the formation.

        Attribute_Definition_Source: unit classification

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: clay

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: mudstone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: shale

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: silt

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: siltstone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: sand

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: sandstone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: limestone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: indeterminate

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value:  water

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

 

      Attribute:

        Attribute_Label: rocktype2

        Attribute_Definition: The second most predominant lithology in the formation.

        Attribute_Definition_Source: unit classification

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: clay

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: coal

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: marl

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: peat

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: sand

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: sandstone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: silt

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: siltstone

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source: n/a

 

    Detailed_Description:

      Entity_Type:

        Entity_Type_Label: la_geol.aat

        Entity_Type_Definition: Arc attribute table for Louisiana geologic coverage.

        Entity_Type_Definition_Source: ESRI

      Attribute:

        Attribute_Label: arc-code

        Attribute_Definition: Unique identifier for the line feature

        Attribute_Definition_Source: AAT data dictionary, Appendix H

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: 1

            Enumerated_Domain_Value_Definition: contact, location certain

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: 7

            Enumerated_Domain_Value_Definition: shoreline or riverbank

            Enumerated_Domain_Value_Definition_Source: n/a

          Enumerated_Domain:

            Enumerated_Domain_Value: 124

            Enumerated_Domain_Value_Definition: state boundary

            Enumerated_Domain_Value_Definition_Source: n/a

 

      Attribute:

        Attribute_Label: arc-para1

        Attribute_Definition: Used for "decorated" lines where additional information is needed.

        Attribute_Definition_Source: AAT data dictionary n/a

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: 0

            Enumerated_Domain_Value_Definition: no additional information

            Enumerated_Domain_Value_Definition_Source: n/a

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: 1

            Enumerated_Domain_Value_Definition: for normal faults, upthrown side is to the right

            Enumerated_Domain_Value_Definition_Source: n/a

      Attribute:

        Attribute_Label: arc-para2

        Attribute_Definition: "Scratch" field used mostly in Alaska.

        Attribute_Definition_Source: AAT data dictionary

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: 0

            Enumerated_Domain_Value_Definition: no additional information

            Enumerated_Domain_Value_Definition_Source: n/a

      Attribute:

        Attribute_Label: source

        Attribute_Definition: A coded reference citation indicating source material used.

        Attribute_Definition_Source: AAT data dictionary

        Attribute_Domain_Values:

          Enumerated_Domain:

            Enumerated_Domain_Value: LA001

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source:

              United States Geological Survey, Biological Research Division's, National Wetlands

              Research Center, 1998, Overlay of the Geologic Map of Louisiana, Geographic

              NAD83, NWRC (1998) [geology], U.S. Geological Survey

              online at http://www.nwrc.gov/sdms/data 

          Enumerated_Domain:

            Enumerated_Domain_Value: US001

            Enumerated_Domain_Value_Definition: n/a

            Enumerated_Domain_Value_Definition_Source:

              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, Chapter A)

    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

        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:

      This report is preliminary and has not been reviewed for conformity with

      U.S. Geological Survey (USGS) editorial standard nor with the North American

      stratigraphic codes.  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: USGS OFR 2005-1351

    Standard_Order_Process:

      Digital_Form:

        Digital_Transfer_Information:

          Format_Name: ARC/INFO export

          Format_Version_Number: 8.3

          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/of/2005/1351

      Fees: none

  Metadata_Reference_Information:

    Metadata_Date: 20041029

    Metadata_Review_Date: 20041020

    Metadata_Contact:

      Contact_Information:

        Contact_Organization_Primary:

          Contact_Organization: U.S. Geological Survey

          Contact_Person: Gregory N. Green

        Contact_Address:

          Address_Type: mailing and physical address

          Address: MS 973, USGS, Denver Federal Center

          City: Denver

          State_or_Province: CO

          Postal_Code: 80225

          Country: USA

        Contact_Voice_Telephone: 1-303-236-5390

        Contact_Electronic_Mail_Address: ggreen@usgs.gov

    Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

    Metadata_Standard_Version: FGDC-STD-001-1998