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Florida is tied with North Dakota as having the fewest earthquakes of any US state. [7] Because Florida is not located near any tectonic plate boundaries, earthquakes are very rare, but not totally unknown. In January 1879, a shock occurred near St. Augustine. There were reports of heavy shaking that knocked plaster from walls and articles from ...
The Neogene of Florida and Adjacent Regions: Special Publication 37: Proceedings of the Third Bald Island Conference on Coastal Plains Geology (PDF) (Report). Tallahassee, Florida: Florida Geological Survey. pp. 91–96. Archived from the original on 2023-12-03 cite report}}: CS1 maint: bot: original URL status unknown
The Peninsular Arch parallels the Ocala Platform to its west and is the dominant sub-surface feature within Florida. It is a structurally high area which affected deposition of sediments during the Cretaceous to the early Cenozoic.
The first comprehensive study of Florida's springs was published in 1947. The next update was released 30 years later in the Florida Geological Survey Bulletin No. 31, Revised, "Springs of Florida". [6] In the 1977 Rosenau survey, there were sixteen offshore (under water) springs identified. All but two were situated on the Gulf coast.
At 345 feet (105 m) above mean sea level, Britton Hill in northern Walton County is the highest point in Florida and the lowest known highpoint of any U.S. state. [3] Much of the state south of Orlando is low-lying and fairly level; however, some places, such as Clearwater, feature vistas that rise 50 to 100 feet (15 to 30 m) above the water.
Finch, J., Geological essay on the Tertiary formation in America: American Journal of Science, v. 7, p. 31–43, 1823. Berkenkotter, Richard D, Application of statistical analysis in evaluating bedded deposits of variable thickness—Florida phosphate data (United States.
Florida map depicting landmass in green belonging to the Hazelhurst deposits of the Miocene or Pliocene epochs. Florida's Hazelhurst terrace and shoreline (formerly the Brandywine) is an ancient relict shoreline or delta present in the southeastern United States's Atlantic seaboard dating from the Late Miocene to Early Pliocene (~11.0 to 7.0 Ma—3.6 to 2.88 Ma).
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. On the gulf side the platform ends over 100 miles (160 km) to the west of the modern shoreline, where a massive cliff rises over 6,000 feet (1,800 m) from the 10,600 feet (3,200 m) depth of ...
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