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The platform's western edge, or Florida Escarpment, is normally defined where water depths at 300 feet (91 m) drop dramatically and in a short distance to 10,000 feet (3,000 m). The Florida peninsula is located on the eastern side of the platform, where in places it lies only 3 to 4 miles (4.8 to 6.4 km) from the platform's edge.
The emergent portion of the platform was created during the Eocene to Oligocene as the Gulf Trough filled with silts, clays, and sands. Flora and fauna began appearing during the Miocene. No land animals were present in Florida prior to the Miocene. The largest deposits of rock phosphate in the United States are found in Florida. [1]
Much more land was above the water along the coast, which was extended much farther to the west. Most of Florida is a thick limestone platform, with typical Karst topography. As limestone is porous, salt water penetrates the lower part of the Florida platform, and fresh water floats on top of the salt water.
The Florida peninsula is a porous plateau of karst limestone sitting atop bedrock known as the Florida Platform. The emergent portion of the platform was created during the Eocene to Oligocene as the Gulf Trough filled with silts, clays, and sands. Flora and fauna began appearing during the Miocene. No land animals were present in Florida prior ...
The Florida peninsula is a porous plateau of karst limestone sitting atop bedrock, known as the Florida Platform. The largest deposits of potash in the United States are found in Florida. [133] The largest deposits of rock phosphate in the country are found in Florida. [133] Most of this is in Bone Valley. [134]
During the Paleogene, what would become Florida was the submerged Florida Platform, a feature not unlike the Bahama Banks composed of carbonate sediments containing foraminifera, corals, bryozoa, and mollusks. Due to the current running through the Gulf Trough, materials needed for sedimentation were instead carried away toward the northeast.
The area in which the Miami Rock Ridge formed is on the edge of the Florida platform. Southward movement of quartz sand along the Florida coast did not reach the area, and the lack of sand and shallow submergence (less than 6 feet (1.8 m)) of the area during the Pamlico time created conditions for oolite to form. [11]
The Fort Thompson Formation is a geologic formation in Florida. It preserves fossils dating back to the late Pleistocene . It was influenced by sea level changes.