U.S. Geological Survey
2007
Geologic outcrop and subcrop type within the inner shelf of Long Bay (Polygon shapefile)
1.0
vector digital data
Open-File Report
2005-1346
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr20051346
http://pubs.usgs.gov/of/2005/1346/arcgis/surficial_geo/surf_geol.zip
Baldwin, W.E.
Denny, J.F.
Schwab, W.C.
Gayes, P.T.
Morton, R.A.
Driscoll, N.W.
2007
Geologic Framework Studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003; geospatial data release
1.0
Open-File Report
2005-1346
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/2005/1346/
In 1999, the U.S. Geological Survey (USGS), in partnership with the South Carolina Sea Grant Consortium, began a study to investigate processes affecting shoreline change along the northern coast of South Carolina, focusing on the Grand Strand region. Previous work along the U.S. Atlantic coast shows that the structure and composition of older geologic strata located seaward of the coast heavily influences the coastal behavior of areas with limited sediment supply, such as the Grand Strand. By defining this geologic framework and identifying the transport pathways and sinks of sediment, geoscientists are developing conceptual models of the present-day physical processes shaping the South Carolina coast. The primary objectives of this research effort are: 1) to provide a regional synthesis of the shallow geologic framework underlying the coastal upland, shoreface and inner continental shelf, and define its role in coastal evolution and modern beach behavior; 2) to identify and model the physical processes affecting coastal ocean circulation and sediment transport, and to define their role in shaping the modern shoreline; and 3) to identify sediment sources and transport pathways; leading to construction of a regional sediment budget.
This data set contains polygons that identify the geologic unit type present in outcrop or subcrop along the Long Bay inner shelf. Polygon areas are based upon digital interpretations of Chirp seismic reflection data and coastal plain boreholes. A polygon outlining the inner shelf study area was erased (ArcGIS Analysis toolbox)in iterations using polygons outlining gridded surfaces of Holocene surficial sediment (sedthick_grd)and paleochannel unconformities (paleoch_grd). Outside of the area covered by the Holocene surficial sediment grid, seismic data indicate surficial sediment cover of < 50 cm. In these areas, paleochannel fills, Cretaceous, and Tertiary units are interpreted to crop out at the sea floor, or subcrop near the surface.
2007
publication date
None planned
-79.158289
-78.517005
33.845955
33.198465
USGS Metadata Identifier
USGS:58133e7d-4e81-4a90-9c74-e430ef93afe6
None
U.S. Geological Survey
USGS
Woods Hole Science Center
WHSC
Coastal and Marine Geology Program
CMGP
outcrop
seafloor geology
Holocene
Paleochannel fill
Cretaceous
interpretive data layer
Tertiary
subcrop
interpretation
ISO 19115 Topic Category
oceans
geoscientificInformation
USGS Thesaurus
scientific interpretation
sea-floor characteristics
marine geology
geospatial datasets
None
South Carolina
Grand Strand
North Myrtle Beach
Myrtle Beach
Surfside
Garden City
Pawleys Island
Waites Island
Southeast United States
United States
Atlantic Ocean
None
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.
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
http://pubs.usgs.gov/of/2005/1346/images/surf_geol.jpg
Image showing the type of geologic outcrop and subcrop within inner shelf of Long Bay
JPEG
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
These data were interpretted from seismic-reflection and
sample data at a regional scale of 1:75,000.
No additional checks for topological consistency were performed on the data.
All interpretations of seafloor geologic type are present in this data set
Interpretations are derived from seismic-reflection and sample data at a
regional scale of 1:75000.
U.S. Geological Survey
2007
SEDTHICK_GRD - ESRI ArcRaster representing the isopach of Holocene surficial sediment within the inner shelf of Long Bay, South Carolina
1.0
raster digital data
Open-File Report
2005-1346
Woods Hole Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2005/1346/arcgis/seismic_srf/sedthick_grd.zip
Baldwin, W.E.
Denny, J.F.
Schwab, W.C.
Gayes, P.T.
Morton, R.A.
Driscoll, N.W.
2007
Geologic Framework Studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003; geospatial data release
1.0
Open-File Report
2005-1346
Woods Hole Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2005/1346/
DVD-ROM
2007
publication date
sedthick_grd, v1.0, 2006
This data set contains polygons that identify the geologic unit type present in outcrop or subcrop along the Long Bay inner shelf. Polygon areas are based upon digital interpretations of Chirp seismic reflection data and coastal plain boreholes. A polygon outlining the inner shelf study area was erased (ArcGIS Analysis toolbox) in iterations using polygons outlining gridded surfaces of Holocene surficial sediment (sedthick_grd) and paleochannel unconformities (paleoch_grd). Outside of the area covered by the Holocene surficial sediment grid, seismic data indicate surficial sediment cover of < 50 cm. In these areas, paleochannel fills, Cretaceous, and Tertiary units are interpreted to crop out at the sea floor, or subcrop near the surface.
U.S. Geological Survey
2007
PALEOCH_GRD - ESRI ArcRaster representing the elevations of paleochannel unconformities underlying the inner shelf of Long Bay, South Carolina
1.0
raster digital data
Open-File
2005-1346
Woods Hole Science Center, Woods Hole, MA
U.S. Geological Survey
http://pubs.usgs.gov/of/2005/1346/arcgis/seismic_srf/paleoch_grd.zip
Baldwin, W.E.
Denny, J.F.
Schwab, W.C.
Gayes, P.T.
Morton, R.A.
Driscoll, N.W.
2007
Geologic Framework Studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003; geospatial data release
1.0
Open-File Report
2005-1346
Woods Hole Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2005/1346/
DVD-ROM
2007
publication date
palech_grd, v1.0, 2006
This data set contains polygons that identify the geologic unit type present in outcrop or subcrop along the Long Bay inner shelf. Polygon areas are based upon digital interpretations of Chirp seismic reflection data and coastal plain boreholes. A polygon outlining the inner shelf study area was erased (ArcGIS Analysis toolbox) in iterations using polygons outlining gridded surfaces of Holocene surficial sediment (sedthick_grd) and paleochannel unconformities (paleoch_grd). Outside of the area covered by the Holocene surficial sediment grid, seismic data indicate surficial sediment cover of < 50 cm. In these areas, paleochannel fills, Cretaceous, and Tertiary units are interpreted to crop out at the sea floor, or subcrop near the surface.
Polygon shapefiles outlining the gridded surface areas of Holocene surficial sediments (sedthick_grd) and paleochannel unconformities (paleoch_grd) were generated.
sedthick_grd, v1.0, 2006
paleoch_grd, v1.0, 2006
2003
surf_geol.shp
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
The erase function, within the ArcGIS Analysis toolbox, was used in iterations to reduce a polygon outlining the entire inner shelf study area. First, the polygon outlining Holocene surficial sediment was used, and then the polygon outlining paleochannel fills.
2003
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
The resulting polygon of the study area (without areas coincident with the Holocene surficial sediment and paleochannel surfaces) was then split, using an arc that was projected from the intersection of the Cretaceous/Tertiary boundary with the coast to the seaward edge of the study area.
2007
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
Each polygon shapefile was classified by the interpreted geologic type and the four were merged back to a single polygon shape file.
2007
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
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 link to the data in the Identification_Information section had to be fixed. The link was valid, but pointed to the wrong dataset.
The link to the data in the Distribution_Information section had to be fixed. 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.
20160627
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
USGS Thesaurus keywords added to the keyword section.
20180720
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Crossref DOI link was added as the first link in the metadata.
20191118
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
G-polygon
1536
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
surf_geol
ESRI polygon shapefile
ESRI
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Id
Internal ID
USGS
0
2487
integer count
1
geol_type
Age and type of geologic unit present in outcrop at the seafloor, or subcrop near the surface
USGS
Cretaceous - rocks of the Pee Dee formation
geologic type (age classification)
USGS
Holocene - surficial sedimentary deposits
geologic type (age classification)
USGS
Quaternary - Paleochannel Fill
geologic type (age classification)
USGS
Tertiary - rocks of the Black Mingo group
geologic type (age classification)
USGS
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
Downloadable Data
Although all data have 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
SHP
ArcGIS 9.0
ESRI polygon shapefile
The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional).
no compression applied
1.070
http://pubs.usgs.gov/of/2005/1346/arcgis/surficial_geo/surf_geol.zip
Data can be downloaded via the World Wide Web (WWW)
DVD-ROM
4.75
Gbytes
UDF
None
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.
20240318
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2226
508-457-2310
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time