Two groups, ten formations, and one member are recognized and described from the Neogene strata of the central Florida panhandle. The Alum Bluff Group is redefined on the basis of lithology and includes the Chipola Formation, Oak Grove Sand, Shoal River Formation, Whites Creek Member of the Shoal River Formation, Choctawhatchee Formation, and Jackson Bluff Formation. Hawthorn deposits, including the Torreya Formation, are excluded from the Alum Bluff Group. The Coastal Group includes the Bruce Creek Limestone, St. Joe Limestone, and Intracoastal Limestone. The Citronelle Formation is not included in either group. / Portions of three structural features are present in the central Florida panhandle. The Gulf Coast Basin is restricted to the region west of the Choctawhatchee River, the Apalachicola Embayment extends east of the Chipola-Apalachicola River area, and the Chattahoochee Arch lies between. The stratigraphy is related to these structural features. The main mass of the Alum Bluff Group is restricted to the eastern margin of the Gulf Coast Basin and to the vicinity of the Chattahoochee Arch whereas the Hawthorn deposits are restricted to the Apalachicola Embayment area. / At least seven periods of deposition and at least seven periods of nondeposition are recognized. The periods of deposition include the following biostratigraphically equivalent formations: (1) undifferentiated Chickasawhayan deposits - "Suwannee" limestone - Chattahoochee Formation of late Oligocene, Chattian age; (2) Chipola Formation - Chipola-equivalent sands - Chipola-equivalent limestone of early Miocene, Burdigalian age; (3) Bruce Creek Limestone - Oak Grove Sand of middle Miocene, Langhian age; (4) Whites Creek Member - St. Joe Limestone of middle Miocene, late Langhian and early Serravallian age; (5) middle and upper Shoal River Formation - St. Joe Limestone of middle Miocene, Serravallian age; (6) Choctawhatchee Formation of late Miocene, Tortonian age; and (7) Intracoastal Limestone - Jackson Bluff Formation - phosphoritic sand unit of Pliocene, late Zanclian to Piacenzian age. There is evidence that an eighth, late Pleistocene period of deposition is present. / Source: Dissertation Abstracts International, Volume: 45-01, Section: B, page: 0101. / Thesis (Ph.D.)--The Florida State University, 1984.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_75270 |
| Contributors | HUDDLESTUN, PAUL FRANCIS., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 245 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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