![]() Jacksonville residents felt many of the strong aftershocks that occurred in September, October, and November 1886. Augustine and severely jolting other towns along that section of Florida's east coast. The shock was felt throughout northern Florida, ringing church bells at St. Another earthquake centered outside Florida was the 1886 Charleston earthquake. In January 1880, Cuba was the center of two strong earthquakes that sent severe shock waves through the city of Key West, Florida. The tremor was felt as far south as Tampa and as far north as Savannah, Georgia. Similar effects were noted at Daytona Beach 50 miles (80 km) south. There were reports of heavy shaking that knocked plaster from walls and articles from shelves. In January 1879, a shock occurred near St. Because Florida is not located near any tectonic plate boundaries, earthquakes are very rare, but not totally unknown. Flora and fauna began appearing during the Miocene.įlorida is tied with North Dakota as having the fewest earthquakes of any US state. The emergent portion of the platform was created during the Eocene to Oligocene as the Gulf Trough filled with silts, clays, and sands. This provided some of the foundation upon which Florida now rests. ![]() As North America separated from Africa a small portion of the African plate detached and was carried away with the North American plate. Early history of Florida Calcite crystals in fossilized clamshell found in Fort Drum limestone depositĭuring the early Mesozoic Era (251 – 66 mya) the supercontinent of Pangea began to rift and break apart. While there are sinkholes in much of the state, modern sinkholes most commonly form in the Tampa Bay area and Central Florida. During the last glacial period, lower sea levels and a drier climate revealed a much wider peninsula, largely savanna. The limestone is topped with sandy soils deposited as ancient beaches over millions of years as global sea levels rose and fell. ![]() This type of terrain ( geomorphology) that develops over a carbonate platform or strata is called Karst Topography. Įxtended systems of underwater caves, sinkholes and springs are found throughout the state and supply most of the water used by residents. Most of this is in Bone Valley in central and west-central Florida. The largest deposits of rock phosphate in the United States are found in Florida. No land animals were present in Florida prior to the Miocene. Flora and fauna began appearing during the Miocene. The Floridian peninsula is a porous plateau of karst limestone sitting atop bedrock known as the Florida Platform. The structure of the Florida platform, the foundation of which came from the African plate over 200 million years ago. Not to be confused with Vehicle registration plates of Florida.
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