Dataset Identification:
Resource Abstract:
- description: Apalachicola Bay and St. George Sound contain the largest oyster fishery in Florida, and the growth and distribution
of the numerous oyster reefs here are the combined product of modern estuarine conditions and the late Holocene evolution
of the bay. A suite of geophysical data and cores were collected during a cooperative study by the U.S. Geological Survey,
the National Oceanic and Atmospheric Administration Coastal Services Center, and the Apalachicola National Estuarine Research
Reserve to refine the geology of the bay floor as well as the bay's Holocene stratigraphy. Sidescan-sonar imagery, bathymetry,
high-resolution seismic profiles, and cores show that oyster reefs occupy the crests of sandy shoals that range from 1 to
7 kilometers in length, while most of the remainder of the bay floor is covered by mud. The sandy shoals are the surficial
expression of broader sand deposits associated with deltas that advanced southward into the bay between 6,400 and 4,400 years
before present. The seismic and core data indicate that the extent of oyster reefs was greatest between 2,400 and 1,200 years
before present and has decreased since then due to the continued input of mud to the bay by the Apalachicola River. The association
of oyster reefs with the middle to late Holocene sandy delta deposits indicates that the present distribution of oyster beds
is controlled in part by the geologic evolution of the estuary. For more information on the surveys involved in this project,
see http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2005-001-FA and http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2006-001-FA.;
abstract: Apalachicola Bay and St. George Sound contain the largest oyster fishery in Florida, and the growth and distribution
of the numerous oyster reefs here are the combined product of modern estuarine conditions and the late Holocene evolution
of the bay. A suite of geophysical data and cores were collected during a cooperative study by the U.S. Geological Survey,
the National Oceanic and Atmospheric Administration Coastal Services Center, and the Apalachicola National Estuarine Research
Reserve to refine the geology of the bay floor as well as the bay's Holocene stratigraphy. Sidescan-sonar imagery, bathymetry,
high-resolution seismic profiles, and cores show that oyster reefs occupy the crests of sandy shoals that range from 1 to
7 kilometers in length, while most of the remainder of the bay floor is covered by mud. The sandy shoals are the surficial
expression of broader sand deposits associated with deltas that advanced southward into the bay between 6,400 and 4,400 years
before present. The seismic and core data indicate that the extent of oyster reefs was greatest between 2,400 and 1,200 years
before present and has decreased since then due to the continued input of mud to the bay by the Apalachicola River. The association
of oyster reefs with the middle to late Holocene sandy delta deposits indicates that the present distribution of oyster beds
is controlled in part by the geologic evolution of the estuary. For more information on the surveys involved in this project,
see http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2005-001-FA and http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2006-001-FA.
Citation
- Title Point Shapefile of the Interpreted Flooding Surface Isopach Based on Seismic-Reflection Profiles Collected in Apalachicola
Bay in 2006 from U.S. Geological Survey Cruise 06001 (FLOODISO_GEOG.SHP, Geographic, WGS84).
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- creation Date
2018-05-19T23:52:53.565270
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T22:38:30Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T22:38:30Z
Metadata contact
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pointOfContact
- organisation Name
CINERGI Metadata catalog
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- Contact information
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- Address
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:d241ddf8-0fb0-48d7-86b8-ea794db7ae8f
Metadata record format is ISO19139 XML (MD_Metadata)