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U.S. Geological Survey Open-File Report 2009-1031

Vibracore, Radiocarbon, Microfossil, and Grain-Size Data from Apalachicola Bay, Florida

List of Figures and Tables

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Figures

Thumbnail image of Figure 1, map of study area, and link to larger figure Figure 1. (A) Inset map of the Florida Bight and Panhandle region including surrounding portions of Alabama and Georgia. (B) Apalachicola Bay is protected from the Open Gulf of Mexico by three barrier islands: Little Saint George Island, Saint George Island, and Saint Vincent Island.
Thumbnail image of Figure 2, surficial geology map, and link to larger figure Figure 2. Surficial geology of Apalachicola Bay highlighting the distribution of oyster growth (orange) within the bay (modified from Twichell and others, 2007). Seismic-reflection-profile locations for Figure 3 and Figure 4 are also shown.
Thumbnail of Figure 3, interpreted seismic profile, and link to larger figure Figure 3. Interpreted seismic profile showing the stratigraphic intervals underlying Apalachicola Bay. The deepest horizon imaged is the floor of a Pleistocene paleovalley. This valley was filled during the Early and Middle Holocene by estuarine deposits (modified from Twichell and others, 2007).
Thumbnail image of Figure 4, seismic profile, and link to larger figure Figure 4. Seismic profile showing the high-amplitude reflection beneath the oyster beds.
Thumbnail image of Figure 5, map of data locations, and link to larger figure Figure 5. Vibracore locations where samples were collected for  grain-size analyses, radiocarbon-age date analyses, microfossil analyses, and associated seismic lines.
Thumbnail image of Figure 6, photo of instrument being deployed from a research vessel, and link to larger figure Figure 6. Rossfelder electric vibracore system deployed from the R/V Gilbert. U.S. Geological Survey photo.
Thumbnail image of Figure 7, handwritten field notes, and link to larger figure Figure 7. First page (representing a vertical distance of 1-m) of vibracore field sheet from Core Site App-10.
Thumbnail image of Figure 8, photograph of a vibracore, and link to larger figure Figure 8. Vibracore photograph from Core Site App-10.
Thumbnail image of Figure 9, seismic-reflection profile, and link to larger figure Figure 9. Seismic-reflection profile with adjacent vibracore App-24.
Thumbnail image of Figure 10, diagram of vibracore contents, and link to larger figure Figure 10. Vibracore summary sheet from Core Site App-10.

 

Tables

Table 1. List of vibracores, subsample analyses, and thumbnail images. Click on the core name to view the field log in PDF format. Click on a thumbnail image to see a larger version of the core photo, core summary, or adjacent seismic-reflection profile. Click on subsample symbol to view analysis data in XLS format. C14, radiocarbon-age analysis; Φ, grain-size analysis; M, microfossil analysis.
Table 2. List of microfossils identified in vibracore samples.

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