Long Island Well Log Data

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: Long Island Well Log Data

Abstract:

The New York Department of Conservation well log data were utilized in correlating offshore geologic structures to those found onshore. This offered a more complete understanding of the stratigraphic evolution of the region.

1. How should this data set be cited?

   Denny, Jane F. , and Foster, David S. , 2002, Long Island Well Log Data: US Geological Survey, Woods Hole, MA.

    

   This is part of the following larger work.

   Schwab, William C., Denny, Jane F., Foster, David S., Lotto, Linda L., Allison, Mead A., Uchupi, Elazar, Swift, B. Ann, Danforth, William W., Thieler, Robert E., and Butman, Bradford, 2002, High-Resolution Quaternary seismic stratigraphy of the New York Bight Continental Shelf: Open-File Report OFR02-152, U.S. Geological Survey, Woods Hole, MA.

    

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -74.06

   East_Bounding_Coordinate: -71.8000

   North_Bounding_Coordinate: 41.26

   South_Bounding_Coordinate: 40

3. What does it look like?

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

   Calendar_Date: 19490000

   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 Point data set. It contains the following vector data types (SDTS terminology):

      • point
   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 0.000089992. Longitudes are given to the nearest 0.000089992. Latitude and longitude values are specified in decimal degrees.

7. How does the data set describe geographic features?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Jane F. Denny
   • David S. Foster
2. Who also contributed to the data set?

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

   Jane F. Denny
   US Geological Survey
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543
   USA
   

   508-457-2311 (voice)
   508-457-2310 (FAX)
   jdenny@usgs.gov
   

In 1995, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), began a program to generate reconnaissance maps of the sea floor offshore of the New York - New Jersey metropolitan area and within the southern Long Island nearshoe area. Our methods include high-resolution sidescan sonar and subbottom profiling techniques, along with surface grab and vibracore sampling to verify the geophysical interpretations. The goal of the investigation is to provide a regional synthesis of the sea-floor environment, to determine regional-scale availability of sand as a resource for beach nourishment programs, and to investigate the role that inner-shelf morphology and geologic framework have in the evolution of the coastal region within the New York Bight Apex and southern Long Island. Maps derived from interpretation of the subbottom profiles show information on the geometry and distribution of the Quaternary sediments and the underlying coastal-plain unconformity. This seismic stratigraphy yields a regional framework on which explanations of present (and past) sediment movement, dispersal, and erosion processes are based.

1. From what previous works were the data drawn?

   Long Island Well Log Data (source 1 of 2)

   Suter, R., deLaguna, W., and Perlumetter, N.M., 1949, Mapping of geologic formations and aquifers of Long Island, New York: State of New York Department of Conservation Wtaer Power and Control Commission: State of New York Department of Conservation and Water Power and Control Commission, Bulletin GW-18, 212 p., State of New York Department of Conservation and Water Power and Control Commission, New York.

   Type_of_Source_Media: map

   Source_Contribution:

   Well log data acquired throughout Long Island were used to idenitify the depth to the coastal-plain Unconformity onshore. These data were correlated to the offshore seismic records, creating a comprehensive view of onshore/offshore seismic structures.

   Seismic Stratigraphy of New York Bight (source 2 of 2)

   Lotto, L.L, 2000, Seismic stratigrpahy and Quaternary evolution of the New York Bight inner continental shelf: Texas A&M University, unpublished M.S. Thesis, College Station, TX, 79p and 16 sheets.: Masters of Science Thesis unknown, Texas A&M University, College Station, Texas.

   Type_of_Source_Media: online

   Source_Contribution:

   The well log data compiled within this thesis were used to generate a gridded data set of the depth to coastal-plain Unconformity and Quaternary thickness onshore Long Island, NY.

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

   Date: 2000 (process 1 of 1)

   As part of the MS Thesis, position of well logs onshore Long Island and description of well log data (i.e. depth to coastal-plain Unconformity) were transcribed from paper records and placed into digital form as ASCI x,y,z data. The well log data were stored within EarthVision as point data. These point data were exported from Earthvision (x,y,z). The coordinates were transformed from UTM, Zone18, WGS84 to Geographic, Coordinate System, WGS84 datum. The z value was stored in meters, and represents the depth to the coastal-plain Unconformity. These ASCII x,y,z data were imported into ArcView 3.2 as a table. They were then coverted into an ESRI point shapefile. The only attributes associated with these data are z - depth to coastal-plain Unconformity.

   Person who carried out this activity:
   

   Jane F. Denny
   US Geological Survey
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543
   USA
   

   508-457-2311 (voice)
   508-457-2310 (FAX)
   jdenny@usgs.gov
   

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

1. How well have the observations been checked?

2. How accurate are the geographic locations?

   These data were transcribed from printed well log descriptions acquired from the New York Department of Conservation (Suter, 1949). These information were gathered during completetion of an MS Degree. See Lotto, L.L., 2000, Seismic stratigraphy and Quaternary evolution of the New York Bight inner continental shelf: Texas A&M University, unpublished M.S. Thesis, College Station, TX, 79p.

3. How accurate are the heights or depths?

   These data were transcribed from printed well log descriptions acquired from various government agencies throughout Long Island, NY. These information were gathered during completetion of an MS Degree. See Lotto, L.L., 2000, Seismic stratigraphy and Quaternary evolution of the New York Bight inner continental shelf: Texas A&M University, unpublished M.S. Thesis, College Station, TX, 79p.

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

   complete

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

   The location of the well log data and depth to the coastal-plain Unconformity were transcribed from paper descriptions. All transcriptions were performed by one individual. All data were quality checked by analyzing position and depth to coastal-plain Unconformity in relation to adjacent well log locations and descriptions within the literature (Suter, 1949).

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)

   Jane F. Denny
   US Geological Survey
   Geologist
   384 Woods Hole Road
   Woods Hole, MA 02543
   USA
   

   508-457-2311 (voice)
   508-457-2310 (FAX)
   jdenny@usgs.gov
   

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

   liwells

3. What legal disclaimers am I supposed to read?

   Altough this data set and its lineage have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or it's 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 items. Users must assume responsibility for the proper use of this data. This data should not be used at resolutions for which it is not intended. This data has no been reviewed for conformity with US Geological Survey editorial standards, or the North American Strigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the US Government.

4. How can I download or order the data?

Dates:

Last modified: 19-Jan-2002
Last Reviewed: 2002

Metadata author:

Jane F. Denny
US Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA

508-457-2311 (voice)
508-457-2310 (FAX)
jdenny@usgs.gov

Metadata standard:

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