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A scenic view of Rockbridge with waterfall at Rockbridge State Nature Preserve in Hocking County, Ohio. The image was taken by Michael C. Hansen in 1973. The Natural Arch and Bridge Society defines a natural arch as �a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.� At 92 feet Rockbridge is Ohio's longest natural bridge. The bridge originated as a typical Hocking Hills alcove carved into the soft middle layer of Black Hand Sandstone at the head of a short box canyon cut by a small tributary of the Hocking River. Three intersecting vertical fractures in the roof of the shelter were gradually enlarged until the block they surrounded...
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Natural bridges,
Outcrops (Geology)--Ohio,
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,
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,
A waterfall on Clear Creek in the Fallsville Wildlife Area, Highland County, Ohio. This area has dolomite, shale, limestone and sandstone lithologies. Bedrock is from the Silurian Geologic Period. The image was an entry in the 1985 Ohio Geology Slide Contest.
Ladd Natural Bridge is a natural bridge of resistant Permian Geologic Period Hockingport Sandstone near Cutler, Washington County, Ohio. The Natural Arch and Bridge Society defines a natural arch as �a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.� The image was taken by Timothy A. Snyder in 1988.
Categories: Physical Item;
Tags: Groups (Stratigraphy),
Mudstone,
Natural bridges,
Outcrops (Geology)--Ohio,
Permian Geologic Period,
A scenic view of Rockbridge at Rockbridge State Nature Preserve in Hocking County, Ohio. This image was entered in the 1986 Ohio Geology Slide Contest. The Natural Arch and Bridge Society defines a natural arch as �a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.� At 92 feet Rockbridge is Ohio's longest natural bridge. The bridge originated as a typical Hocking Hills alcove carved into the soft middle layer of Black Hand Sandstone at the head of a short box canyon cut by a small tributary of the Hocking River. Three intersecting vertical fractures in the roof of the shelter were gradually enlarged until the block they surrounded...
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Natural bridges,
Outcrops (Geology)--Ohio,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation at the Little Lyons Falls in Mohican State Park, Hanover Township, Ashland County, Ohio. This area has shale, siltstone, sandstone and conglomerate lithologies. Bedrock is from the Mississippian Geologic Period. The photograph was taken by Michael C. Hansen in 1981.
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Outcrops (Geology)--Ohio,
Sandstone,
A waterfall flowing over an outcrop of Columbus Limestone at Hayden Falls Park in Franklin County, Ohio. Unit Lithology in this area is limestone and dolomite. Bedrock is from the Devonian Geologic Period.
Categories: Physical Item;
Tags: Devonian Geologic Period,
Dolomite,
Groups (Stratigraphy),
Limestone,
Outcrops (Geology)--Ohio,
An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation at Big Spring Hollow. Big Spring Hollow is located in the Hocking State Forest, Hocking County, Ohio. It is part of the ninety-nine acres that have been set aside for rock climbing and rappelling. The area is managed by the Ohio Division of Forestry. Bedrock is from the Mississippian Geologic Period.
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Outcrops (Geology)--Ohio,
Sandstone,
A scenic view of Rockbridge with waterfall at Rockbridge State Nature Preserve in Hocking County, Ohio. The Natural Arch and Bridge Society defines a natural arch as �a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.� At 92 feet Rockbridge is Ohio's longest natural bridge. The bridge originated as a typical Hocking Hills alcove carved into the soft middle layer of Black Hand Sandstone at the head of a short box canyon cut by a small tributary of the Hocking River. Three intersecting vertical fractures in the roof of the shelter were gradually enlarged until the block they surrounded was no longer supported and fell, creating...
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Natural bridges,
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,
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,
The Blue Hen Falls near Boston, Summit County, Ohio. The falls is in the Cuyahoga Valley National Park. Spring Creek flows over the hard layer of Berea Sandstone that caps the waterfall, protecting softer layers of Bedford Shale below. This area has shale, siltstone and sandstone lithologies. Bedrock is from the Devonian Geologic Period. The image was an entry in the 1986 Ohio Geology Slide Contest.
Categories: Physical Item;
Tags: Devonian Geologic Period,
Groups (Stratigraphy),
Outcrops (Geology)--Ohio,
Sandstone,
Shale,
A scenic view of Rockbridge with waterfall at Rockbridge State Nature Preserve in Hocking County, Ohio. The image was taken by Michael C. Hansen in 1973. The Natural Arch and Bridge Society defines a natural arch as �a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.� At 92 feet Rockbridge is Ohio's longest natural bridge. The bridge originated as a typical Hocking Hills alcove carved into the soft middle layer of Black Hand Sandstone at the head of a short box canyon cut by a small tributary of the Hocking River. Three intersecting vertical fractures in the roof of the shelter were gradually enlarged until the block they surrounded...
Categories: Physical Item;
Tags: Conglomerate,
Groups (Stratigraphy),
Mississippian Geologic Period,
Natural bridges,
Outcrops (Geology)--Ohio,
A waterfall flowing over an outcrop of Columbus Limestone at Hayden Falls Park in Franklin County, Ohio. Unit Lithology in this area is limestone and dolomite. Bedrock is from the Devonian Geologic Period. This photograph was an entry in the 1986 Ohio Geology Slide Contest.
Categories: Physical Item;
Tags: Devonian Geologic Period,
Dolomite,
Groups (Stratigraphy),
Limestone,
Outcrops (Geology)--Ohio,
Flooding at the falls of the Hocking River at White's Mill on the northeast side of Athens, Athens County, Ohio. The water shows foam caused by acid mine damage. The image is looking at the Hocking River from the parking lot at White's Mill in 1970.
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,
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. The photograph was taken by George W. White in 1945.
Categories: Physical Item;
Tags: Caves,
Conglomerate,
Gorges,
Groups (Stratigraphy),
Mississippian Geologic Period,
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