Coch1986: Sediment characteristics and facies distributions

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?
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  5. How can I download or order the data?
• Who wrote the metadata?

Title: Coch1986: Sediment characteristics and facies distributions

Abstract:

"Sedimentologic analysis of 717 bottom samples from Hudson, NY to Sandy Hook has provided the first detailed picture of sediment variation within the Hudson system. The sedimentologic data have been synthesized into the first detailed sediment facies map which show the areal extents of the 17 sediment facies recognized in the study. Mean grain size undergoes systematic changes over the area. From Hudson south to Kingston, the river bottom is coarse, but becomes finer southward reflecting change in source area and a riverine decrease in grain size. From Kingston southward through the Highlands Gorge and into the Tappan Zee, the Hudson bottom is covered by distinctly finer and uniform sediment facies which reflect sedimentation of suspended material near the upstream limit of salt-water intrusion in the Hudson estuary as well as input from tributaries draining areas of finer grained rocks. Grain size coarsens steadily south of the Tappan Zee reflecting increases in biogenic, anthropogenic and glacial sediment sources as well as up-estuary transport of some coarser sediment from the Lower and Upper bays. Organic contents ranged up to 14.9% with an average of 6.5%. Statistically distinct differences occur in organic contents between the Hudson segment north of the Tappan Zee (5.1%) and south of the Tappan Zee (7.7%). These differences are attributed to higher anthropogenic organic loading in the urban area south of the Tappan Zee. Radiographs of box cores show that a wide range of sedimentary structures occur in Hudson bottom sediments. Systemic areal changes in sedimentary structure sequences provide additional information on sediment dispersal and depositional patterns in the Hudson system." (Coch, 1986, p. 109)

1. How should this data set be cited?

   Reid, Jamey M. , 2005, Coch1986: Sediment characteristics and facies distributions.

   Online Links:

   Other_Citation_Details:

   Geology Department, Queens College CUNY and Institute of Marine and Atmospheric Sciences, CUNY, Flushing, NY 11367

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -74.245380

   East_Bounding_Coordinate: -73.929650

   North_Bounding_Coordinate: 40.726270

   South_Bounding_Coordinate: 40.424900

3. What does it look like?

   coch1986.jpg

   Image map showing extent of data layer coverage

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

   Calendar_Date: 1986

   Currentness_Reference: publication date

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

   Geospatial_Data_Presentation_Form: document

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 (503)

   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?

   coch1986

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   STATION

   Station number (Source: Source report)

   LATITUDE

   Latitude of coordinate position (Source: Source report)

   LONGITUDE

   Longitude of coordinate position (Source: Source report)

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Jamey M. Reid

2. Who also contributed to the data set?

   Please review the cross reference information for the original data set credit to Coch (1986), Polly Hastings for Digitizing samples locations and Larry Poppe for entering the data from the source report.

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

   Jamey M. Reid
   U.S. Geologlca Survey
   IT Specialist (Data Management)
   384 Woods Hole Road
   Woods Hole, MA 02543-1598
   USA
   

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

The purpose of this data layer is to create a digital version of the facies distributions published by Coch (1986) for inclusion in the usSEABED data collection.

1. From what previous works were the data drawn?

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

   (process 1 of 2)

   Stations were digitized off maps and facies distributions were entered into digital form to create an Excel spreadsheet.

   Person who carried out this activity:
   

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

   508-584-8700 x2314 (voice)
   (508) 457-2310 (FAX)
   lpoppe@usgs.gov
   

   (process 2 of 2)

   Digital data were hand formatted into dbSEABED data entry structure, then filtered and data-mined through dbSEABED software (version: db9_MNEs.bas)

   Person who carried out this activity:
   

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

   508-584-8700 x2204 (voice)
   (508) 457-2310 (FAX)
   jreid@usgs.gov
   

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

   Coch, Nicholas K. , 1986, Sediment characteristics and facies distributions in the Hudson System: Northeastern Geology v. 8, no. 3, p. 109-129, City University of NY and State University of NY, Troy, New York.

1. How well have the observations been checked?

   All attributes were entered and checked in a consistent manner.

2. How accurate are the geographic locations?

   Navigational accuracy is unknown.

3. How accurate are the heights or depths?

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

   Facies descriptions and locations are provided for 503 samples.

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

   No additional check for topological consistency were performed on this data.

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

None except that acknowledgement must be made in publications and reports of (i) the original data source, and (ii) the data integration by USGS and dbSEABED project at the University of Colorado.

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

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

   Coch, 1986

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: 0.057

   • Cost to order the data:

Dates:

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

Metadata author:

U.S. Geological Survey
c/o Jamey M. Reid
IT Specialist (Data Management)
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(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>