MARION DUFRESNE cruise 02018 cores collected in the Gulf of Mexico (MD_CORES.SHP)

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

Frequently anticipated questions:

What does this data set describe?

Title:
MARION DUFRESNE cruise 02018 cores collected in the Gulf of Mexico (MD_CORES.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?
    U.S. Geological Survey, Unpublished Material, MARION DUFRESNE cruise 02018 cores collected in the Gulf of Mexico (MD_CORES.SHP): Open-File Report 2005-1071, U.S. Geological Survey, Coastal and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.

    Twichell, D.C., Cross, V.A., 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:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -92.255650
    East_Bounding_Coordinate: -89.020070
    North_Bounding_Coordinate: 28.243610
    South_Bounding_Coordinate: 27.183400
  3. What does it look like?
    http://pubs.usgs.gov/of/2005/1071/data/cores/md/md_cores-thumb.gif (GIF)
    Thumbnail image showing the extent and coverage of the data layer.
    http://pubs.usgs.gov/of/2005/1071/data/cores/md/md_cores.gif (GIF)
    Image showing the extent and coverage of the data layer.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 01-Jul-2002
    Ending_Date: 10-Jul-2002
    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):
      • Entity point (32)
    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?
    md_cores
    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.
    CORE_ID
    Unique identifier assigned to core (Source: USGS) Character string
    LATITUDE
    Latitude of core location in decimal degrees (Source: USGS)
    Range of values
    Minimum:27.18340
    Maximum:28.24361
    Units:decimal degrees
    Resolution:.00001
    LONGITUDE
    Longitude in decimal degrees of core location (Source: USGS)
    Range of values
    Minimum:-92.25565
    Maximum:-89.02007
    Units:decimal degrees
    Resolution:.00001
    SITE_NAME
    Name of general location of core site (Source: USGS) Character string describing the core site
    WATER_DEPT
    Water depth, in meters, of the location where the core was collected. (Source: USGS)
    Range of values
    Minimum:579
    Maximum:2259
    Units:meters
    Resolution:1
    CORE_LENGT
    Length of core in meters (Source: USGS)
    Range of values
    Minimum:0.10
    Maximum:37.84
    Units:meters
    Resolution:.01
    CORER
    Description of the type of coring system used. (Source: USGS)
    ValueDefinition
    Piston coreInformation unavailable from original metadata.
    Gravity coreInformation unavailable from original metadata.
    Gravity/flux coreGravity/flux corer which was a gravity corer with heat flow probes on it
    Giant box coreInformation unavailable from original metadata.
    Character string defining the type of coring system used.
    DESCRIPTIO
    indicates if core description exists (Source: USGS)
    ValueDefinition
    yesCores were opened and described.
    noCores were not opened so they have no descriptions.
    no-bentcore bent and not opened
    no-no recovno core recovered
    Character string.
    HOTLINK
    environment label and path to link core image (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)
    • U.S. Geological Survey
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    VeeAnn A. Cross
    U.S. Geological Survey
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

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

Why was the data set created?

This shapefile shows the locations of cores collected aboard the MARION DUFRESNE in 2002 and were split and visually described while at sea. Further information on this cruise and a preliminary data analysis is provided in Winters and others (2004).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    staff, USGS, Unpublished Material, Cruise Summary R/V Marion Dufresne, Northern Gulf of Mexico, July 1-18, 2002.

    Online Links:

    Type_of_Source_Media: Microsoft Excel spread sheet
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: unknown (process 1 of 6)
    Core locations were entered into an excel spreadsheet while in the field. This spreadsheet was exported as a comma delimited text file and imported to ArcView 3.3, created an event theme, and then converted that to a shapefile. ArcToolbox was then used to define the projection. Person who carried out this activity:
    VeeAnn Cross
    U.S. Geological Survey
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    508-548-8700 x 2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Data sources produced in this process:
    • md_cores.shp
    Date: unknown (process 2 of 6)
    The attributes of the shapefile were edited and a field labeled hotlink was added which includes the path to descriptions of the cores. Person who carried out this activity:
    David Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA
    USA

    508-548-8700 x 2266 (voice)
    508-457-2310 (FAX)
    dtwichell@usgs.gov
    Data sources used in this process:
    • md_cores.shp
    Data sources produced in this process:
    • md_cores.shp
    Date: 03-Nov-2016 (process 3 of 6)
    Edits to the metadata were made to fix any errors that MP v 2.9.34 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.). The link to the larger work citation in the Identification_Information section had to be fixed. A cross-reference link was fixed. The source information was incomplete and had to be modified to meet the standard. Minor fixes to the attribute format for some attributes were needed. 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 4 of 6)
    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 5 of 6)
    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: 24-Sep-2021 (process 6 of 6)
    Added keywords section with USGS persistent identifier as theme keyword, 20200908. Modified originator name, 20210924. 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?
    Winters, W.J., Lorenson, T.D., and Paull, C.K., 2004, Initial report of the IMAGES VIII/PAGE 127 gas hydrate and paleoclimate cruise on the RV Marion Dufresne in the Gulf of Mexico, 2-18 July, 2002: Open-File Report 2004-1358, U.S. Geological Survey, Reston, VA.

    Online Links:

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?
    Core sample information includes only those cores that were described during the MARION DUFRESNE cruise.
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on this data set.

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)
    Deborah Hutchinson
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    508-548-8700 x 2263 (voice)
    508-457-2310 (FAX)
    dhutchinson@usgs.gov
    Hours_of_Service: Monday-Friday, 8am-5pm, Eastern Standard Time
  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 dataset has been used by the U.S. Geological Survey, 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. Reference made to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof
  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 point shapefile Size: 0.002
      Network links: http://pubs.usgs.gov/of/2005/1071/data/cores/md/md_cores.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?
    The 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:
David Twichell
U.S. Geological Survey
Oceanographer
384 Woods Hole Rd.
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/md_cores.shp.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:31 2021