USGS OFR 98-596: Wrightsville Beach, NC - Grain size data for surface grab samples

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• 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 data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

Title:

USGS OFR 98-596: Wrightsville Beach, NC - Grain size data for surface grab samples

Abstract:

In this report, geophysical and sedimentologic data are presented which were collected on the shoreface and inner continental shelf of Wrightsville Beach, North Carolina (water depths 4-20 meters) in March, 1994, along with a preliminary interpretation that builds on previously and subsequently collected data. A suite of Shipek grab samples was collected at the time of the sidescan-sonar survey to groundtruth the acoustic facies identified on the imagery. Additional sediments samples were obtained by divers at each vibracore location. Grain size analyses of all sediment samples were conducted using a combination of wet sieve and Coulter Counter techniques following the methodology of Poppe and others (1985). Vibracores were split, described, and subsampled for grain size analysis, radiocarbon and amino-acid race mization dating.

1. How should this data set be cited?

   Thieler, E. Robert , 1998, USGS OFR 98-596: Wrightsville Beach, NC - Grain size data for surface grab samples: Open-File report 98-596, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/of98-596/pages/meth.html>

   This is part of the following larger work.

   Thieler, E. Robert , Schwab, William C. , Allison, Mead A. , Denny, Jane F. , and Danforth, William W. , 1998, Sidescan-Sonar Imagery of the Shoreface and Inner Continental Shelf, Wrightsville Beach, North Carolina: Open-File Report 98-596, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/of98-596/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -77.800490

   East_Bounding_Coordinate: -77.761080

   North_Bounding_Coordinate: 34.224410

   South_Bounding_Coordinate: 34.176600

3. What does it look like?

   98596.jpg (JPEG)

   Image map showing extent and distribution of data layer coverage

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

   Calendar_Date: 1998

   Currentness_Reference: publication date

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

   Geospatial_Data_Presentation_Form: tabular 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 (18)

   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 0.000000. Longitudes are given to the nearest 0.000000. 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?

   98596

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   LATITUDE

   Latitude of sample location (Source: USGS)

   LONGITUDE

   Longitude of sample location (Source: USGS)

   SITENAME

   Survey or laboratory code for site

   DATASETKEY

   Entity_and_Attribute_Overview:

   Textural data is duplicated in USGS OFR 00-358, however this report contains additional CaCO3 data. The following fields were entered into usSEABED: SFS data:SampleID:Latitude:Longitude, LongitudeD:DecmlPartLon:LatitudeD:DecimlPartLat TXR data:%Gravel:%Sand:%Silt:%Clay::Median:Mean:StDev:Skewness:Kurtosis CMP data:%CaCO3

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

2. Who also contributed to the data set?

   Please refer to the cross reference information for the original data set credit to Thieler, et al, 1998.

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

   E. Robert Thieler
   U.S. Geological Survey
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

   508-548-8700 x 2350 (voice)
   508-457-2310 (FAX)
   rthieler@usgs.gov
   

To examine the relationships between surficial morphology and geologic framework of the shoreface and inner shelf

1. From what previous works were the data drawn?

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

   (process 1 of 2)

   Data were typed in from a zoomable figure showing the grain size data in the online publication.

   Person who carried out this activity:
   

   Chris Jenkins
   Institute of Arctic & Alpine Research (INSTAAR) Univeristy of Colorado at Boulder
   1560 30th Street
   Boulder, CO 80309-0450
   USA
   

   (303) 735-5250 (voice)
   (303) 492-6388 (FAX)
   chris.jenkins@colorado.edu
   

   Data sources used in this process:

   • <http://pubs.usgs.gov/of/of98-596/pages/meth.html>

   (process 2 of 2)

   Digital data were checked, formatted to dbSEABED input format, then processed using dbSEABED software to produce a range of output formats. The processing contained quality checking that may have declined to pass faulty or suspect data to outputs.

   Person who carried out this activity:
   

   Chris Jenkins
   Institute of Arctic & Alpine Research (INSTAAR) Univeristy of Colorado at Boulder
   1560 30th Street
   Boulder, CO 80309-0450
   USA
   

   (303) 735-5250 (voice)
   (303) 492-6388 (FAX)
   chris.jenkins@colorado.edu
   

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

   Thieler, E. Robert , Schwab, William C. , Allison, Mead A. , Denny, Jane F. , and Danforth, William W. , 1998, Sidescan-Sonar Imagery of the Shoreface and Inner Continental Shelf, Wrightsville Beach, North Carolina: Open-File Report 98-596, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

   Online Links:

   • <http://pubs.usgs.gov/of/of98-596/>

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?

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 E. Robert Thieler
   Woods Hole Science Center
   Woods Hole, MA 02543-1598
   USA
   

   (508) 548-8700 (voice)
   (508) 457-2310 (FAX)
   

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

   USGS OFR 98-596: Wrightsville Beach, NC

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. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.020

   • Cost to order the data:

Dates:

Last modified: 25-May-2005
Last Reviewed: 04-May-2005

Metadata author:

Jamey Reid
U.S. Geological Survey
IT Specialist (Data Management)
384 Woods Hole Rd.
Woods Hole, MA 02543-1598

(508) 548-8700 x2204 (voice)
(508) 457-2310 (FAX)
jreid@usgs.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>