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The NR-1 Sinkhole is a giant underwater sinkhole located in the Straits of Florida 40 miles (64 km) southwest of Key West, Florida. [1] It is found at an approximate depth of 1,886 feet (575 m) of water at the foot of the Pourtales Escarpment, an area of Quaternary sediment.
Some are caused by karst processes—for example, the chemical dissolution of carbonate rocks [1] or suffosion processes. [2] Sinkholes can vary in size from 1 to 600 m (3 to 2,000 ft) both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. [3]
Pages in category "Sinkholes of Florida" The following 9 pages are in this category, out of 9 total. ... This page was last edited on 1 November 2014, ...
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The map above shows areas of the U.S. with bedrock types that are prone to sinkholes. It's not just Florida that needs to worry about them. Think sinkholes like the one that opened up under a ...
The cutaway, limestone sides of the sinkhole provide an easily visible geological record of the area. Twelve springs, some more visible than others, feed the pond at the bottom of the sinkhole. In the summer, the bottom of the sinkhole is dramatically cooler than the air at the surface due to the depth and shade from the canopy above.
Lake Jackson is a shallow, prairie lake on the north side of Leon County, Florida, United States, near Tallahassee, with two major depressions or sinkholes known as Porter Sink and Lime Sink. The lake is located in the Red Hills Region, and has fluctuated from periods of being dry to a maximum elevation of 96 feet (29 m) above sea level.
The map above shows areas of the U.S. with bedrock types that are prone to sinkholes. It's not just Florida that needs to worry about them. Think sinkholes like the one that opened up under a ...