Structural evolution and facies development on the Florida-Bahama Platform--Triassic through Paleocene
The Florida-Bahama Platform encompasses all of Florida on and offshore, the Blake Plateau, Great and Little Bahama Banks including channels and straits, and northern Cuba. During the Upper Jurassic-Coahuilan, a Northwestern Sedimentary Province contained the Middle Ground Arch separating the Tampa Basin from the DeSoto Salt Basin to the north. A Southeastern Sedimentary Province was separated from the Northwestern Province by the Sarasota and Peninsular Arches. During the Comanchean, the Southeastern Province developed into the South Florida, Bahama and Blake Plateau Basins, separated respectively by the Cay Sal Arch and the Little Bahama High. From the Upper Jurassic through the Comanchean, the continental margin of the Platform was occupied by a carbonate complex that restricted marine circulation in much of the area. In the Southeastern Sedimentary Province, this barrier caused the deposition of lagoonal carbonates and anhydrites. Deposition of these rock types ended at the close of the Comanchean with the break-up of the Florida-Bahama Platform and the destruction of the carbonate complex. Early in the Gulfian, the rapid subsidence of the Blake Plateau Basin to bathyal depths and the collapse of the Florida Straits accompanies tectonic activity in Cuba. Also in the Early Gulfian, the Rebecca Shoal barrier reef appeared on the upthrown northern side of the Straits. By the end of the Gulfian the reef had expanded to encircle the Florida peninsula, causing deposition of the Cedar Keys (Paleocene) lagoonal dolomite and anhydrite.
- OSTI ID:
- 6117915
- Report Number(s):
- CONF-9304188-; CODEN: GAAPBC
- Journal Information:
- Geological Society of America, Abstracts with Programs; (United States), Vol. 25:4; Conference: 42. annual Geological Society of America (GSA) Southeastern Section meeting, Tallahassee, FL (United States), 1-2 Apr 1993; ISSN 0016-7592
- Country of Publication:
- United States
- Language:
- English
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