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The most prominent feature of the state park is the large sinkhole formed by the dissolution of limestone by acidic groundwater over long periods of time. [1] Devil's Millhopper is unique in Florida in terms of its scale; over 100 feet (30 m) of rock layers are exposed. [2]
Devil's Millhopper Geological State Park: Alachua: 67 acres (27 ha) 1974: sinkhole pond: 120-foot (36.6 m) deep, 500-foot (152.4 m) wide sinkhole accessed by 232 step stairway Don Pedro Island State Park: Charlotte: 230 acres (93 ha) 1985: Gulf of Mexico: Barrier island accessible only by boat or ferry [14] Dr. Von D. Mizell-Eula Johnson State ...
The following is a list of the mapped bedrock units in Pennsylvania. The rocks are listed in stratigraphic order. [1] System Group name Formation name Member name
The Meadowcroft Rockshelter is an archaeological site which is located near Avella in Jefferson Township, Pennsylvania. [4] The site is a rock shelter in a bluff overlooking Cross Creek (a tributary of the Ohio River), and contains evidence that the area may have been continually inhabited for more than 19,000 years.
Devil's Millhopper Geological State Park, Florida This page was last edited on 18 March 2016, at 03:43 (UTC). Text is available under the Creative Commons ...
The geological series that forms the Hocking Hills extends south and west, gradually diminishing but still forming impressive bluffs and gorges in: Clear Creek Metro Park, part of the Columbus and Franklin County Metropolitan Park District; Rising Park in Lancaster; Wahkeena Memorial State Nature Preserve in Fairfield County
The Hamilton Group is a Devonian-age geological group which is located in the Appalachian region of the United States. It is present in New York , Pennsylvania , Maryland , Ohio , West Virginia , northwestern Virginia and Ontario, Canada , [ 1 ] [ 2 ] and is mainly composed of marine shale with some sandstone .
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