STETSON36: Samples from the Georges Bank Canyons

Metadata also available as: OUTLINE - TEXT

Frequently-anticipated questions:

What does this data set describe?
    Title: STETSON36: Samples from the Georges Bank Canyons
    Abstract:
    Submarine canyons cut into the edge of the continental shelf and the continental slope along much of the U.S. Atlantic coast. Three canyons along the southern edge of Georges Bank (Lydonia, Oceanographer, Gilbert) were dredged and cored to study their modern sediments and the lithologies and ages of the rocks exposed on the canyon walls. As part of this study eleven cores were taken and the results of the textural analyses on the surficial sediments are contained in this data set.

  1. How should this data set be cited?

    Poppe, Lawrence J. , 2003, STETSON36: Samples from the Georges Bank Canyons:, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., FitzGerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Data are released via CD-ROM media. This digital publication may also be available via the web at pubs.usgs.gov

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -68.150000
    East_Bounding_Coordinate: -67.663890
    North_Bounding_Coordinate: 40.495830
    South_Bounding_Coordinate: 40.281670

  3. What does it look like?

    stetson36 (GIF)
    Image map showing extent and distribution of data layer coverage.

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

    Calendar_Date: 1936
    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):

      • Entity point (11)

    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 0.00001. Longitudes are given to the nearest 0.00001. 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?

    stetson36.dbf
    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.

    PROJECTID
    Name assigned to the data set for future identification. (Source: Compiler)

    ValueDefinition
    STETSON1936Scientist and publication year

    AREA
    Location of study (Source: Compiler)

    ValueDefinition
    Canyons South of Georges Bank 

    DEVICE
    Sampling device used to collect sediment (Source: Scientist)

    ValueDefinition
    Gravity Core 

    CORE
    Number which designates the station occupied. (Source: Scientist)

    Range of values
    Minimum:1
    Maximum:11
    Units:cores
    Resolution:1

    TDEPTH
    Depth within the core to the top of the sample in cm. (Source: Scientist)

    Range of values
    Minimum:0
    Maximum:0
    Units:centimeters
    Resolution:.5

    BDEPTH
    Depth within the core to the bottom of the sample in cm. (Source: Scientist)

    Range of values
    Minimum:1.5
    Maximum:5
    Units:centimeters
    Resolution:.5

    LATITUDE
    Latitude coordinate of sample locations (Source: Scientist)

    Range of values
    Minimum:40.28167
    Maximum:40.49583
    Units:Decimal Degrees
    Resolution:0.00001

    LONGITUDE
    Longitude coordinate of sample location (Source: Scientist)

    Range of values
    Minimum:-68.15000
    Maximum:-67.66389
    Units:Decimal Degrees
    Resolution:0.00001

    DEPTH
    Water depth at sample locations (Source: Scientist)

    Range of values
    Minimum:396
    Maximum:1057
    Units:meters
    Resolution:1

    GRAVEL
    Percentage of gravel in a sample (Source: Scientist)

    Range of values
    Minimum:0
    Maximum:7
    Units:percent
    Resolution:0.1

    SAND
    Percentage of sand in a sample (Source: Scientist)

    Range of values
    Minimum:24.8
    Maximum:93.5
    Units:percent
    Resolution:0.1

    SILT
    Percentage of silt in the samples (Source: Scientist)

    Range of values
    Minimum:3
    Maximum:31.5
    Units:percent
    Resolution:0.1

    CLAY
    Percentage of clay in the samples (Source: Scientist)

    Range of values
    Minimum:3
    Maximum:41.5
    Units:percent
    Resolution:0.1

    CLASS
    Textural classification based on a scheme devised by Shepard (1954) (Source: Scientist)

    Character string of width 18.

    Entity_and_Attribute_Overview:
    Grain-size data, textural descriptions, navigation, and identifiers for the data published by Stetson (1936).

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?

    Please view the cross reference information for the original data set credit to Stetson (1936). Larry Poppe for entering the data from the source report and creating the ArcView shapefile.

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

Why was the data set created?
The purpose of this data layer is to release a digital version of selected sediment data originally published in Stetson (1936).

How was the data set created?
  1. From what previous works were the data drawn?

    (source 1 of 1)
    Stetson, H.C., 1936, Geology and Paleontology of the Georges Bank Canyons: Bulletin, Geological Society of America v. 47, p. 339-366.

    Type_of_Source_Media: paper

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

    Date: 11-Sep-2002 (process 1 of 1)
    The source information was manually entered into digital form and was imported from an ASCII text file to an ArcView table. The table was later converted to an event theme in ArcView and saved as the final shapefile.

    Person who carried out this activity:

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

    Data sources used in this process:
    • stetson36.txt

    Data sources produced in this process:

    • stetson36.shp
    • stetson36.dbf
    • stetson.shx

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    All attributes were entered and checked by the compilers in a consistent manner.

  2. How accurate are the geographic locations?

    No navigational methods are provided in the original publication. Horizontal accuracy is unknown.

  3. How accurate are the heights or depths?

    Tides less than 2 m.

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

    Sample locations, grain size data, textural descriptions, navigation, and identifiers are provided for 11 stations.

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

    No additional checks for topological consistency were performed on this 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: None

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

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

    Regional Mapping of Surficial Sediments: Gulf of Maine and Georges Bank, Aggregates and Habitats Projects, stetson36.shp

  3. What legal disclaimers am I supposed to read?

    Although this data set 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.

  4. How can I download or order the data?

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

    The data is available in ArcView shapefile format. The user must have ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView, the user may utilize another GIS application package capable of importing data.

Who wrote the metadata?
Dates:
Last modified: 16-Feb-2003

Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

508-548-8700 x2314 (voice)
508-457-2310 (FAX)
lpoppe@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.7.3 on Sun Feb 16 11:23:50 2003

OFR03-001 Home | Introduction | Nomenclature | Browse Maps | Data Catalog | Data Dictionary


[an error occurred while processing this directive]