Morphology of the Gulf of Mexico within GLORIA survey area (MORPHOLOGY.SHP)

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Frequently anticipated questions:

What does this data set describe?

Title:
Morphology of the Gulf of Mexico within GLORIA survey area (MORPHOLOGY.SHP)
Abstract:
Since 1982 the U.S. Geological Survey (USGS) has collected a large amount of surficial and shallow subsurface geologic information in the deep parts of the Gulf of Mexico. These data include digital sidescan sonar imagery, digital seismic-reflection data, and descriptions and analyses of piston and gravity cores. The data were collected during several different projects that addressed surficial and shallow subsurface geologic processes. Some of these data sets have already been published, but the growing interest in the occurrence and distribution of gas hydrates in the Gulf of Mexico warrants integrating these existing data and associated interpretations into a GIS to provide regional background information for ongoing and future gas hydrate research.
  1. How might this data set be cited?
    Twichell, David, 2005, Morphology of the Gulf of Mexico within GLORIA survey area (MORPHOLOGY.SHP): Open-File Report 2005-1071, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine 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, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -95.799362
    East_Bounding_Coordinate: -82.041714
    North_Bounding_Coordinate: 29.210850
    South_Bounding_Coordinate: 23.741351
  3. What does it look like?
    https://pubs.usgs.gov/of/2005/1071/data/sidescan/interpretation/gloria/morphology.gif (GIF)
    Overview image showing the extent and coverage of the data layer.
    https://pubs.usgs.gov/of/2005/1071/data/sidescan/interpretation/gloria/morphology-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?
    Beginning_Date: 02-Feb-1982
    Ending_Date: 24-Oct-1985
    Currentness_Reference:
    ground condition
  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):
      • G-polygon (26)
    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
  7. How does the data set describe geographic features?
    morphology
    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:14.168
    Resolution:.001
    PERIMETER
    Perimeter of polygon in native units. (Source: Software computed)
    Range of values
    Minimum:0.001
    Maximum:33.463
    Resolution:.001
    DESCRIPTIO
    text description assigned to the polygon feature of the geomorphic interpretation (Source: USGS) Character string

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • David Twichell
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov

Why was the data set created?

This GIS data layer shows the geomorphic provinces of the deep-water part of the Gulf of Mexico. The interpretation draws on the geologic interpretation (EEZ-SCAN Scientific Staff, 1987; Paskevich, 2000) and publications by Twichell and others (1990; 1991; 2000).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 5)
    (comp.), various, 1987, Atlas of the U.S. Exclusive Economic Zone, Gulf of Mexico and eastern Caribbean areas: Miscellaneous Investigation Series Map I-1864-A,B, U.S. Geological Survey, Reston, VA.

    Online Links:

    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.
    Information unavailable from original metadata. (source 2 of 5)
    Paskevich, V., 2000, Gulf of Mexico GLORIA sidescan sonar geologic interpretation: ArcView data coverages: Open-File Report 00-019, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 500000
    Source_Contribution:
    The morphologic features included in the geologic interpretation of this publication were incorporated into this morphologic interpretation.
    Information unavailable from original metadata. (source 3 of 5)
    Twichell, D.C., Parson, L.M., and Paull, C.K., 1990, Variations in the styles of erosion along the Florida Escarpment, eastern Gulf of Mexico: Marine and Petroleum Geology Vol. 7, pages 253-266, Elsevier, Amsterdam, the Netherlands.

    Type_of_Source_Media: paper
    Source_Contribution:
    The morphology of the Florida Escarpment was taken in part from this report.
    Information unavailable from original metadata. (source 4 of 5)
    Twichell, D.C., Kenyon, N.H., Parson, L.M., and McGregor, B.A., 1991, Depositional patterns of the Mississippi Fan surface: Evidence from GLORIA II and high-resolution seismic profiles: Seismic facies and sedimentary processes of modern and ancient submarine fans, edited by Weimer, P. and Link, M.H. pages 349-364, Springer-Verlag, New York, NY.

    Type_of_Source_Media: paper
    Source_Contribution:
    The extent of the Mississippi Canyon and Mississippi Fan were taken from this report.
    Information unavailable from original metadata. (source 5 of 5)
    Twichell, D.C., Nelson, C.H., and Damuth, J.E., 2000, Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope: Deep-Water Reservoirs of the World, Gulf Coast Section of SEPM 20th Annual Bob F. Perkins Research Conference, edited by Weimer, P., Slatt, R., Coleman, J., Rosen, N., Nelson, H., Bouma, A., Styzen, M., and Lawrence, D. pages 1032-1044, Society of Economic Paleontologists and Mineralogists, Tulsa, OK.

    Other_Citation_Details: published on CD-ROM
    Type_of_Source_Media: CD-ROM
    Source_Contribution: The extent of Bryant Canyon and Fan were taken from this report
  2. How were the data generated, processed, and modified?
    Date: 2001 (process 1 of 7)
    The interpretive overlay, morphology.shp, used the gloria.tif image and the geology.shp shapefile as a base, and then incorporated the morphology of different parts of the Gulf of Mexico that has been described in studies by EEZ-Scan 85 Scientific Staff (1987), Paskevich (2000, and Twichell and others (1990, 1991, 2000). The components of the interpretation and their sources are listed below: Salt deformed slope - modified from Paskevich (2000) Basin floor - combined sediment wave and hemipelagic drape of Paskevich (2000) Mesozoic/Cenozoic carbonate - taken from Paskevich (2000) and Twichell and others (1990) Carbonate slope - same as Pleistocene carbonate mud of Paskevich (2000) Sigsbee Escarpment - same as Paskevich (2000) Seamount - same as Paskevich (2000) Mississippi Fan - from Twichell and others (1991) Bryant Fan - from Twichell and others (2000). Processing took place after 2001. Person who carried out this activity:
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • gloria.tif
    • geology.shp
    Data sources produced in this process:
    • morphology.shp
    Date: 2005 (process 2 of 7)
    The shapefile was reprojected from Geographic NAD27 to Geographic WGS84 using ArcToolBox (v. 9.1) Person who carried out this activity:
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • morphology.shp
    Data sources produced in this process:
    • morphology_project.shp
    Date: unknown (process 3 of 7)
    Dataset copied Person who carried out this activity:
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • morphology_project.shp
    Data sources produced in this process:
    • morphology.shp
    Date: 16-Mar-2017 (process 4 of 7)
    Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. The link to the larger work citation had to be fixed. Added an online link to a cross-reference. Fixed some of the cross-reference citations. The source information was incomplete and had to be modified to meet the standard. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 5 of 7)
    USGS Thesaurus keywords added to the keyword section. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 18-Nov-2019 (process 6 of 7)
    Crossref DOI link was added as the first link in the metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 08-Sep-2020 (process 7 of 7)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  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, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
    Twichell, D.C., Kenyon, N.H., Parson, L.M., and McGregor, B.A., 1991, Depositional patterns of the Mississippi Fan surface: Evidence from GLORIA II and high-resolution seismic profiles: Springer-Verlag, New York, NY.

    This is part of the following larger work.

    (ed.), Paul Weimer, and Martin H. Link (ed.), 1991, Seismic Facies and Sedimentary Processes of Modern and Ancient Submarine Fans: Springer-Verlag, New York, NY.

    Twichell, D.C., Parson, L.M., and Paull, C.K., 1990, Variations in the styles of erosion along the Florida Escarpment, eastern Gulf of Mexico: Marine and Petroleum Geology v. 7, p. 253-266, Elsevier, Amsterdam.

    EEZ Scan 85 Scientific Staff, 1987, Atlas of the U.S. Exclusive Economic Zone, Gulf of Mexico: Miscellaneous Investigation Series Map I-1864, U.S. Geological Survey, Reston, VA.

    Online Links:

    Twichell, D.C., Nelson, C.H., and Damuth, J.E., 2000, Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope: Society of Economic Paleontologists and Mineralogists, Tulsa, OK.

    This is part of the following larger work.

    (ed.), P. Weimer, (ed.), R.M. Slatt, (ed.), J. Coleman, (ed.), N.C. Rosen, (ed.), H. Nelson, (ed.), A.H. Bouma, (ed.), M.J. Styzen, and Lawrence, D.T., 2000, Deep-Water Reservoirs of the World: Proceedings of the Gulf Coast Section SEPM.

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?
    Information unavailable from original metadata.
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on the data.

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)
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@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?
    • Availability in digital form:
      Data format: The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). in format SHP (version 3.3) ESRI polyline shapefile Size: 0.290
      Network links: https://pubs.usgs.gov/of/2005/1071/data/sidescan/interpretation/gloria/morphology.zip
      Media you can order: DVD-ROM (Density 4.75 Gbytes) (format UDF)
    • Cost to order the data: None

  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: 16-Nov-2021
Metadata author:
U.S. Geological Survey
Attn: David Twichell
Oceanographer
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2266 (voice)
(508) 457-2310 (FAX)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2005-1071/morphologymeta.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:31 2021