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Bass Islands Dolomite outcrop with stalactites in a cave on South Bass Island, Put-In-Bay Township, Ottawa County, Ohio. This area has dolomite, anhydrite, gypsum, salt and shale lithologies. Bedrock is from the Silurian Geologic Period. The slide image was created in 1952 by Philip M. Smith for the Ohio Cave Survey Project. The Ohio Cave Survey Project was formalized in 1952. The Central Ohio Grotto of the National Speleological Society in cooperation with the Ohio Geological Survey established a comprehensive survey of Ohio caves and caverns. The location is approximate to the center of the island.
Categories: Physical Item;
Tags: Caves,
Dolomite,
Groups (Stratigraphy),
Islands,
Outcrops (Geology)--Ohio,
Rock House is the only true cavern at Hocking Hills State Park, Hocking County, Ohio. The outcrop of Black Hand Sandstone rises 150 feet from the valley floor overlooking Laurel Run. Halfway up the face of the cliff is a row of five to seven
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
An outcrop of the Black Hand Sandstone of the Cuyahoga Formation that forms Old Man's Cave at Hocking Hills State Park, Hocking County, Ohio. Old Man's Cave is a large rock shelter in the northwest valley wall of Old Man's Creek. It is formed in the weakly cemented crossbedded middle zone of the Black Hand Sandstone. The rock shelter cave is about 200 feet long, 50 feet high, and 75 feet deep. The resistant uppermost zone of the Black Hand sandstone forms the roof of the cave. Bedrock is from the Mississippian Geologic Period. The photograph was taken by Michael C. Hansen in January 1978.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Columnar joints in the Black Hand Sandstone of the Cuyahoga Formation that forms Old Man's Cave at Hocking Hills State Park, Hocking County, Ohio. Old Man's Cave is a large rock shelter in the northwest valley wall of Old Man's Creek. It is formed in the weakly cemented crossbedded middle zone of the Black Hand Sandstone. The rock shelter cave is about 200 feet long, 50 feet high, and 75 feet deep. The resistant uppermost zone of the Black Hand sandstone forms the roof of the cave. Bedrock is from the Mississippian Geologic Period.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
The Lower Falls at Hocking Hills State Park, Hocking County, Ohio. Downstream from Old Man's Cave, Old Man's Creek encounters the resistant lowermost zone of the Black Hand Sandstone and cascades into a broad plunge pool as a scenic waterfall known as the Lower Falls. A large rock shelter is developed behind the waterfall. At the base of the rock shelter the contact between the Fairfield Shale and the Black Hand Sandstone Members of the Cuyahoga Formation can be seen. Bedrock is from the Mississippian Geologic Period. This photograph was an entry in the 1983 Ohio Geology Slide Contest.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Black Hand Sandstone rises 150 feet from the valley floor overlooking Laurel Run. Halfway up the face of the cliff is a row of five to seven
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Trails leading through the Lower Gorge come to Queer Creek and eventually to Cedar Falls at Hocking Hills State Park, Hocking County, Ohio. Cedar Falls is a semi-circular cliff over which Cedar Creek flows to form a waterfall, 50 feet in height. Behind the falls is a small recess cave formed by the sapping action of the plunge pool. The face of the waterfall is crossed by two deep grooves, formed by the abrasive action of small sand particles, through which the water flows. The rim of Cedar Falls is composed of the hard, massive upper layer of the Black Hand Sandstone. Two joint fractures are readily visible in the upper zone
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
The
Categories: Physical Item;
Tags: Caves,
Devonian Geologic Period,
Dolomite,
Groups (Stratigraphy),
Limestone,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation at the Conkle's Hollow State Nature Preserve area in Hocking Hills State Park, Hocking County, Ohio. Conkle's Hollow is a deep rocky gorge. All three zones of the Black Hand Sandstone are visible in the steep cliffs of the valley walls. Crossbedding and honeycomb weathering are well displayed on the fretted surface of the Black Hand. The gorge at Conkle's Hollow follows a major joint trending N 60� W. Conkle's Hollow is named for an early visitor who inscribed his name, W. J. Conkle 1797, on the west wall of the gorge. Bedrock is from the Mississippian Geologic Period. The photograph was taken by Michael C. Hansen in 1973. The location is approximate...
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Exploring Reif's Cave in Ross County, Ohio. The cave developed in the Cedarville Dolomite of the Silurian Geologic Period. The photograph was taken by Horton H. Hobbs III of Wittenberg University Chapter of the National Speleological Society. This image received third place in the 1985 Ohio Geology Slide Contest. Location given is approximate to west of Cove Run Road and Cove Run.
Categories: Physical Item;
Tags: Caves,
Dolomite,
Groups (Stratigraphy),
Outcrops (Geology)--Ohio,
Silurian Geologica Period,
Perry's Cave on South Bass Island, Put-In-Bay Township, Ottawa County, Ohio. This area has dolomite, anhydrite, gypsum, salt and shale lithologies. Bedrock is from the Silurian Geologic Period. The photograph was taken in 1981.
Categories: Physical Item;
Tags: Caves,
Dolomite,
Groups (Stratigraphy),
Islands,
Outcrops (Geology)--Ohio,
Trails leading through the Lower Gorge come to Queer Creek and eventually to Cedar Falls at Hocking Hills State Park, Hocking County, Ohio. Cedar Falls is a semi-circular cliff over which Cedar Creek flows to form a waterfall, 50 feet in height. Behind the falls is a small recess cave formed by the sapping action of the plunge pool. The face of the waterfall is crossed by two deep grooves, formed by the abrasive action of small sand particles, through which the water flows. The rim of Cedar Falls is composed of the hard, massive upper layer of the Black Hand Sandstone. Two joint fractures are readily visible in the upper zone
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation that forms Ash Cave at Hocking Hills State Park, Hocking County, Ohio. Ash Cave is the most impressive in size of the many rock shelter caves in the Hocking Hills State Park area. The reentrant is 100 feet deep and 500 feet long. The rim is about 90 feet above the valley floor. A small waterfall flows along a small joint in the rim of the rock shelter and forms a well-developed plunge pool. Much of the margin of Ash Cave is formed by a large joint that follows the valley formed by a tributary of the East Fork of Queer Creek. Bedrock is from the Mississippian Geologic Period. The photograph was taken by George W. White in 1945.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
An outcrop of the Black Hand Sandstone of the Cuyahoga Formation that forms Old Man's Cave at Hocking Hills State Park, Hocking County, Ohio. Old Man's Cave is a large rock shelter in the northwest valley wall of Old Man's Creek. It is formed in the weakly cemented crossbedded middle zone of the Black Hand Sandstone. The rock shelter cave is about 200 feet long, 50 feet high, and 75 feet deep. The resistant uppermost zone of the Black Hand sandstone forms the roof of the cave. Bedrock is from the Mississippian Geologic Period. The photograph was taken by George W. White in 1945.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
The Lower Falls at Hocking Hills State Park, Hocking County, Ohio. Downstream from Old Man's Cave, Old Man's Creek encounters the resistant lowermost zone of the Black Hand Sandstone and cascades into a broad plunge pool as a scenic waterfall known as the Lower Falls. A large rock shelter is developed behind the waterfall. At the base of the rock shelter the contact between the Fairfield Shale and the Black Hand Sandstone Members of the Cuyahoga Formation can be seen. Bedrock is from the Mississippian Geologic Period. This photograph was awarded first place in the 1986 Ohio Geology Slide Contest.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation that forms Ash Cave at Hocking Hills State Park, Hocking County, Ohio. Ash Cave is the most impressive in size of the many rock shelter caves in the Hocking Hills State Park area. The reentrant is 100 feet deep and 500 feet long. The rim is about 90 feet above the valley floor. A small waterfall flows along a small joint in the rim of the rock shelter and forms a well-developed plunge pool. Much of the margin of Ash Cave is formed by a large joint that follows the valley formed by a tributary of the East Fork of Queer Creek. Bedrock is from the Mississippian Geologic Period. The photograph was taken by Ralph J. Bernhagen in 1966.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Exploring Freeland's Cave in Meigs Township, Adams County, Ohio. Freeland's Cave is located on the south side of Turkey Creek. When the cave was resurveyed in 1985 by the Wittenberg University Speleological Society, it was the longest known cave in Ohio. The cave is developed along joints in the dolomite of the Silurian Geologic Period. The photograph was taken by Horton H. Hobbs III of Wittenberg University Chapter of the National Speleological Society. This image received an honorable mention in the 1984 Ohio Geology Slide Contest.
Categories: Physical Item;
Tags: Caves,
Dolomite,
Groups (Stratigraphy),
Outcrops (Geology)--Ohio,
Silurian Geologic Period,
The
Categories: Physical Item;
Tags: Caves,
Devonian Geologic Period,
Dolomite,
Groups (Stratigraphy),
Limestone,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation that forms Ash Cave at Hocking Hills State Park, Hocking County, Ohio. Ash Cave is the most impressive in size of the many rock shelter caves in the Hocking Hills State Park area. The reentrant is 100 feet deep and 500 feet long. The rim is about 90 feet above the valley floor. A small waterfall flows along a small joint in the rim of the rock shelter and forms a well-developed plunge pool. Much of the margin of Ash Cave is formed by a large joint that follows the valley formed by a tributary of the East Fork of Queer Creek. Bedrock is from the Mississippian Geologic Period. This photograph was awarded first place in the 1984 Ohio Geology Slide...
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
Rowlands Cave in Scioto Township, Delaware County, Ohio. The swallow Hole and cave entrance. The cave formed in the Columbus Limestone of the Devonian Geologic Period. The image shows Richard Rowlands sitting on the right out of view and Horton H. Hobbs III of Wittenberg University emerging from the cave entrance. The image was taken by Michael C. Hansen in 1988.
Categories: Physical Item;
Tags: Caves,
Devonian Geologic Period,
Dolomite,
Groups (Stratigraphy),
Limestone,
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