GLORIA_GEOLOGY_NAD83.SHP - Gulf of Mexico GLORIA sidescan sonar geologic interpretation

Metadata also available as - [Outline] - [Parseable text]

Frequently-anticipated questions:

What does this data set describe?

Title:
GLORIA_GEOLOGY_NAD83.SHP - Gulf of Mexico GLORIA sidescan sonar geologic interpretation
Abstract:
This GIS overlay is a component of the U.S. Geological Survey, Woods Hole Science Center's, Gulf of Mexico GIS database. The Gulf of Mexico GIS database is intended to organize and display USGS held data and provide on-line (WWW) access to the data and/or metadata.
Supplemental_Information:
The geologic interpretation of the Gulf of Mexico GLORIA data was taken from an image, Gulf_mex.rmp, available on the U.S. Geological Survey Digital Data Series DDS-15 CD-ROM. The image was created from the geologic interpretations of the GLORIA images that may be found in the paper atlases at a scale of 1:500,000 and are referenced as U.S. Geological Survey Miscellaneous Investigations Series I-1864-A,B (1987).
  1. How should this data set be cited?

    Paskevich, Valerie, 19981007, GLORIA_GEOLOGY_NAD83.SHP - Gulf of Mexico GLORIA sidescan sonar geologic interpretation: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    D.C., Twichell, V.A., Cross, Paskevich, V.F., Hutchinson, D.R., Winters, W.J., and Hart, P.E., 2005, GIS of selected geophysical and core data in the northern Gulf of Mexico continental slope collected by the U.S. Geological Survey: Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -95.799187
    East_Bounding_Coordinate: -82.041878
    North_Bounding_Coordinate: 29.210609
    South_Bounding_Coordinate: 23.740904

  3. What does it look like?

    <http://pubs.usgs.gov/of/2005/1071/data/sidescan/interpretation/gloria/gloria_geology_nad83.gif> (GIF)
    Overview image showing the extent and coverage of the data layer.
    <http://pubs.usgs.gov/of/2005/1071/data/sidescan/interpretation/gloria/gloria_geology_nad83_thumb.gif> (GIF)
    Thumbnail image showing the extent and coverage of the data layer.

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 23-Nov-1987
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • GT-polygon composed of chains (192)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.005. Longitudes are given to the nearest 0.005. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    gloria_geology
    Shapefile Attribute Table (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    AREA
    Area of polygon in native units (Source: Software computed)

    Range of values
    Minimum:0.000
    Maximum:7.884
    Units:.001

    PERIMETER
    Perimeter of polygon in native units. (Source: Software computed)

    Range of values
    Minimum:0.023
    Maximum:30.144

    GEOLOGY_
    Carried over from the ArcInfo attribute GEOLOGY#. GEOLOGY# is an ArcInfo internal control parameter and has no applicable relevance to the use fo the data. (Source: Sofgtware computed)

    Range of values
    Minimum:2
    Maximum:193

    GEOLOGY_ID
    Carried over from the ArcInfo attribute GEOLOGY-ID. GEOLOGY-ID is an ArcInfo internal control parameter and has no applicable relevance to the use of the data. (Source: Software computed)

    Range of values
    Minimum:1
    Maximum:192

    GEOCODE
    Assigned value from original geologic interpretation image used for color coding. (Source: USGS)

    Range of values
    Minimum:4
    Maximum:41
    Units:integer count
    Resolution:1

    DESCRIPTIO
    Text description assigned to the polygon feature of the geologic interpretation. (Source: USGS)

    Character string

    GEOABRV
    Abbreviation/legend code for geologic interpretation (Source: USGS)

    ValueDefinition
    AhAbyssal Plain - Hemipelagic Drape
    BsSeamount
    CcCanyon and channel
    CswSediment waves
    FdlFan; Depositional lobe facies
    FlsFan; Linear stripe facies
    LmcMesozoic/Cenozoic carbonate outcrop
    LpPleistocene carbonate mud
    MWdfcMass wasting; Carbonate debris flow deposits
    MWdftMass wasting; Terrigenous debris flow deposits
    MWtcMass wasting; Carbonate talus deposits
    SdSalt diapir
    SdpSalt deformation province
    SeSigsbee Escarpment
    No data 

    Entity_and_Attribute_Detail_Citation:
    Text description and legend code (GeoAbrv) assigned to the polygon feature:

    Ah - Abyssal Plain - Hemipelagic drape Cc - Canyon & Channel Fdl - Fan: Depositional lobe facies Fls - Fan: Linear stripe facies MWdfc - Mass Wasting: Carbonate debris flow deposits MWdft Mass Wasting: Terrigenous debris flow deposits Lme - Mesozoic/Cenozoic carbonate outcrop Lp - Pleistocene carbonate mud Sdp - Salt Deformation Province Sd - Salt Diapir Bs - Seamount Csw - Sediment Waves Se - Sigsbee Escarpment No Data

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    U.S. Geological Survey
    c/o Valerie Paskevich
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

Why was the data set created?

This GIS data layer data layer contains the geologic interpretation of the Gulf of Mexico GLORIA data.

How was the data set created?

  1. From what previous works were the data drawn?

    gulf_mex.rmp (source 1 of 2)
    Twichell, D.C., and Polloni, C.F, 1993, CD-ROM Atlas of the Deepwater Parts of the U.S. Exclusive Economic Zone in the Atlantic Ocean, the Gulf of Mexico, and the Eastern Caribbean Sea: Digital Data Series DDS-15, U.S. Geological Survey, Office of Marine Geology, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
    This is part of the following larger work.

    EEZ Scan 1985 Scientific Staff, 1987, U.S. Exclusive Economic Zone, Gulf of Mexico and eastern Caribbean areas: Miscellaneous Investigations I-1864-A,B, U.S. Geological Survey, Office of Marine Geology, Reston, VA.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 500000
    Source_Contribution:
    The geologic interpretation image, Gulf_mex.rmp, was taken from DDS-15 and used to create vector coverages for ARC/INFO and ArcView.

    The geologic interpretation of the GLORIA images found in the atlas, I-18640A,B, was digitized and ARC/INFO coverages created. Those coverages were combined to create a single, pseudo-color coded interpretive map/image for DDS-15. Unfortunately, the coverages were subsequently lost. Rather than redigitize the mosaics, the decision was made to recreate the coverages based on the image from DDS-15.

    I-1864-A,B (source 2 of 2)
    (comp.), various, 1987, Atlas of the U.S. Exclusive Economic Zone, Gulf of Mexico and eastern Caribbean areas: U.S. Geological Survey Miscellaneous Investigations I-1864-A,B, U.S. Geological Survey, Office of Marine Geology, Reston, VA.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 500000
    Source_Contribution:
    The image showing the geologic interpretation of the Gulf of Mexico GLORIA data was created by digitizing the expanded interpretations from I-1864-A,B. THe coverages were combined to create a single pseudo-color coded interpretive map/image for DDS-15. Unfortunately, the ARC coverages were lost. Rather than re-digitize the interpretations, the decision was made to recreate the coverages based on the DDS-15 image.

  2. How were the data generated, processed, and modified?

    Date: 19-Oct-1998 (process 1 of 6)
    The geologic interpretaiton image was taken from the CD-ROM DDS-15 and registered to a 250 meter, georeferenced GLORIA image for the entire Gulf of Mexico. When the geologic interpretation image was registered, the image was then rasterized to create vector outlines.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • gulf_mex.rmp

    Data sources produced in this process:

    • vecsegs1

    Date: 10-Nov-1998 (process 2 of 6)
    Due to the stepping in the image found at the geologic boundaries, the resulting vectors showed the same stepping. The vector information was editted to smooth the lines. The editted and smoothed vector segments were exported in ARC/INFO export format.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.ogv

    Data sources used in this process:
    • vecsegs1

    Data sources produced in this process:

    • geology.e00

    Date: 13-Nov-1998 (process 3 of 6)
    The ARC export file, geology.e00, was imported to ARC as coverage geology and the polygon coverage was built.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • geology.e00

    Data sources produced in this process:

    • geology.pat

    Date: 13-Nov-1998 (process 4 of 6)
    The ARC polygon coverage, geology.pat, was exported as an ArcView shapefile, geology.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • geology.pat

    Data sources produced in this process:

    • geology.shp
    • geology.dbf
    • geology.shx

    Date: 16-Nov-1998 (process 5 of 6)
    The ArcView shapefile, geology, was brought into ArcView for final viewing and verification. No further editting or changes were needed to the shapefile. The geology.dbf file was modified to add the fields Geocode, Description, and GeoAbrv.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • geology.shp
    • geology.dbf
    • geology.shx

    Data sources produced in this process:

    • geology.shp
    • geology.dbf
    • geology.shx

    (process 6 of 6)
    Dataset reprojected from NAD27 to NAD83 using Arctoolbox 9.0.

    Data sources used in this process:

    • gloria_geology.shp

    Data sources produced in this process:

    • gloria_geology_nad83.shp

  3. What similar or related data should the user be aware of?

    Paskevich, V., 2000, Gulf of Mexico GLORIA sidescan sonar geologic interpretation: ArcView data coverages: Open-File Report 00-019, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
    This is part of the following larger work.

    Open-File Report 00-019, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Twichell, D.C., and Polloni, C.F., 1993, CD-ROM Atlas of the Deepwater Parts of the US Exclusive Economic Zone in the Atlantic Ocean, the Gulf of Mexico, and the Eastern Caribbean Sea: U.S. Geological Survey Digital Data Series DDS-15, US Geolgoical Survey, Office of Marine Geology, U.S. Geological Survey, Reston, VA.

    Online Links:

    This is part of the following larger work.

    Twichell, DC, and Polloni, CF, 1993, CD-ROM Atlas of the Deepwater Parts of the US Exclusive Economic Zone in the Atlantic Ocean, the Gulf of Mexico, and the Eastern Caribbean Sea: U.S. Geological Survey Digital Data Series DDS-15, U.S. Geological Survey, Office of Marine Geology, U.S. Geological Survey, Reston, VA.

    Online Links:

    EEZ-SCAN 85 Scientific Staff, 1987, Atlas of the US Exclusive Economic Zone GUlf of Mexico and Eastern Caribbean Areas: U.S. Geological Survey MIscellaneous Investigations Series I-1864-A,B, U.S. Geological Survey, Office of Marine Geology, U.S. Geological Survey, Reston, VA.

    This is part of the following larger work.

    EEZ-SCAN 85 Scientific Staff, 1987, Atlas of the US Exclusive Economic Zone, Gulf of Mexico and Eastern Caribbean Areas: U.S. Geological Survey Miscellaneous Investigations Series I-1864-A,B, U.S. Geological Survey, Office of Marine Geology, U.S. Geological Survey, Reston, VA.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

    The data layer has been checked for topological consisitency (Clean and Build completed).

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey
    c/o Valerie Paskevich
    Information Specialist / GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 22-Feb-2005
Metadata author:
U.S. Geological Survey
c/o Valerie Paskevich
Information Specialist, GIS Coordinator
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.8.6 on Tue Dec 13 13:25:46 2005