Bottom Sediments -- Cape Ann to Casco Bay (FOLGER75 shapefile)

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Frequently anticipated questions:


What does this data set describe?

Title: Bottom Sediments -- Cape Ann to Casco Bay (FOLGER75 shapefile)
Abstract:
The reconnaissance maps upon which this data set is based show the areal distribution of the major bottom sediment types covering the sea floor off eastern New England between Cape Ann and Casco Bay. The maps were intended as a guide to the future mapping of gravel, sand, silt, and clay, and because these sediments reflect the hydraulic conditions, they are also helpful for deducing the important sediment transport mechanisms.
  1. How might this data set be cited?
    Poppe, Lawrence J., 2003, Bottom Sediments -- Cape Ann to Casco Bay (FOLGER75 shapefile): Open-File Report 03-001, 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.

    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, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -70.799200
    East_Bounding_Coordinate: -70.000000
    North_Bounding_Coordinate: 43.803300
    South_Bounding_Coordinate: 42.833300
  3. What does it look like?
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/folger75/folger75-thumb.gif (GIF)
    Thumbnail image showing extent and distribution of data layer coverage.
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/folger75/folger75.gif (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: 1975
    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 (187)
    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 0.0001. Longitudes are given to the nearest 0.0001. 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?
    folger75.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.
    PROJECT_ID
    Name used for future data set identification. (Source: Compiler)
    ValueDefinition
    FOLGER_ETAL1975Information unavailable from original metadata.
    STATION
    Number assigned to a location were a sample was collected. (Source: Compiler)
    Range of values
    Minimum:1
    Maximum:187
    Units:station
    Resolution:1
    LATITUDE
    Latitude coordinate of sample location. (Source: Scientist)
    Range of values
    Minimum:42.8333
    Maximum:43.8033
    Units:Decimal Degrees
    Resolution:0.0001
    LONGITUDE
    Longitude coordinate of sample location. (Source: Scientist)
    Range of values
    Minimum:-70.7990
    Maximum:-70.0000
    Units:Decimal Degrees
    Resolution:0.0001
    LITHOLOGY
    Lithologic description of the bottom sediments at a station. (Source: Scientist) Verbal equivalents of the classification scheme
    Entity_and_Attribute_Overview:
    Textural classifications, navigation, and identifiers for the grabs collected as part of Folger et al. (1975).
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Lawrence J. Poppe
  2. Who also contributed to the data set?
    Please review the cross reference information for the original data set credit to Folger et al. (1975), and 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
    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 the textural descriptions published by Folger et al (1975).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Folger, D.W., O'Hara, C.J., and Robb, J.M., 1975, Maps Showing Bottom Sediments on the Continental Shelf of the Northeastern United States--Cape Ann, Massachusetts to Casco Bay, Maine: U.S. Geological Survey Miscellaneous Investigations Series Map Map I-839, 2 sheets, scale 125,000, U.S. Geological Survey, Washington, DC.

    Type_of_Source_Media: paper
    Source_Contribution:
    Stations on interpretive maps from the report were converted to an ASCII text file.
  2. How were the data generated, processed, and modified?
    Date: 10-Sep-2002 (process 1 of 5)
    Stations and interpreted sediment texture were digitized off maps, entered into digital form, and imported from an ASCII text file to an ArcView table. The table was later converted to an event theme and saved as the final shapefile. Person who carried out this activity:
    Larence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
    Data sources used in this process:
    • folger75.txt
    Data sources produced in this process:
    • folger75.shp
    • folger75.dbf
    • folger75.shx
    Date: 01-Dec-2015 (process 2 of 5)
    Edits to the metadata were made to fix any errors that MP v 2.9.32 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 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 Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 3 of 5)
    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 4 of 5)
    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: 23-Sep-2021 (process 5 of 5)
    Added keywords section with USGS persistent identifier as theme keyword, 20200908. Fixed an originator name, 20210923. 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?
    Folger, D.W., O'Hara, C.J., and Robb, J.M., 1975, Maps Showing Bottom Sediments on the Continental Shelf of the Northeastern United States--Cape Ann, Massachusetts to Casco Bay, Maine: Miscellaneous Investigations Series Map Map I-839, U.S. Geological Survey, Reston, VA.

    Other_Citation_Details: 2 sheets, scale 1:125,000

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 (most samples were navigated with Loran A, but data came from several sources). Horizontal accuracy is unknown.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Sample locations and positions are provided for 187 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:
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)
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    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? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. 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: Five files (folger75.shp, folger75.dbf, folger75.shx, folger75.sbx, folger75.sbn) comprising the ArcView point shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format SHP (version 3.2) ESRI point shapefile Size: 0.005
      Network links: http://pubs.usgs.gov/of/2003/of03-001/data/seddata/folger75/folger75.zip
      Media you can order: CD-ROM (Density 650 Mbytes) (format ISO 9600)
      Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
    • 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 the 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: 23-Sep-2021
Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2314 (voice)
(508) 457-2310 (FAX)
lpope@usgs.gov
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/ofr2003-001/folger75.shp.faq.html>
Generated by mp version 2.9.50 on Wed Sep 29 18:05:33 2021