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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.
Fault plane breccia in the Peebles Dolomite at the Plum Run Stone quarry located two miles east of Peebles in Adams County, Ohio. This area has dolomite, shale, limestone and sandstone lithologies. Bedrock is from the Silurian Geologic Period. The image was made by Michael C. Hansen in 1978.
A fault in the Vanport limestone at SME Bessener, Inc., in Poland Township, Mahoning County, Ohio. Bedrock is from the Pennsylvanian Geologic Period. The image was taken by Clark L. Scheerens in 1985.
An outcrop of Bedford Shale at the Galena Shale, Tile and Brick Company claypit near Galena, Delaware County, Ohio. Unit lithology in this area is shale, siltstone, and sandstone. Bedrock is from the Devonian Geologic Period. The image was made by Michael C. Hansen in 1975.
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 Guy L. Denny in July 1966.
Petroglyphs carved into the Pottsville Group-Sharon sandstone/conglomerate at Leo Petroglyph and Nature Preserve in Jackson County, Ohio. This area has shale, siltstone, sandstone and conglomerate lithologies. The panel of petroglyphs includes around 37 figurative drawings of humans, birds, animal and human foot prints, a fish, a snake and other figures carved into the rock outcropping on the gently sloping hillside above a steep gorge. Leo Petroglyph is actually in a series of petroglyphs ancient people cut into the sandstone outcrop. The exact age of the carvings is unknown, but based on the degree of weathering of the soft sandstone, the carvings are probably not more than 1,000 years old. The art is likely the...
An outcrop of the Pottsville Group-Sharon sandstone/conglomerate with crossbedding and honeycomb weathering at Thompson Ledges Township Park, Thompson Township, Geauga County, Ohio. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by Michael C. Hansen in 1975.
An outcrop of the Pottsville Group-Sharon sandstone/conglomerate showing the road cut for the Ohio State Route 21 underpass at Interstate 77 mile marker 135.7 west of Akron in Copley Township, Summit County, Ohio. This area has shale, siltstone, sandstone and conglomerate lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by Michael C. Hansen in 1981.
An outcrop of the Pottsville Group-Sharon sandstone/conglomerate showing the road cut for the Ohio State Route 21 underpass at Interstate 77 mile marker 135.7 west of Akron in Copley Township, Summit County, Ohio. This area has shale, siltstone, sandstone and conglomerate lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by Michael C. Hansen in 1981.
An outcrop showing a fault in the Newland (No. 4, Brookville) coal of the Allegheny Group in Bethlehem Township, Stark County, Ohio. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken in 1960.
The Allegheny Group Putnam Hill limestone type section at Putnam Hill Park in Zanesville, Muskingum County, Ohio. John Turkopp and Wilber E. Stout did work in this area for Measured Stratigraphic Section File Number 788. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by William Smith in 1952.
An outcrop of the Homewood sandstone of the Pottsville Group along Ohio State Route 800 in Pike Township, Stark County, Ohio. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was probably taken in 1960.
An outcrop of the Allegheny Group with channel sand at Glen Ebon in York Township, Athens County, Ohio. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The image was taken by Micheal C. Hansen in 1976.
An outcrop of the Allegheny Group with channel sand pinching and swelling at Glen Ebon in York Township, Athens County, Ohio. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The image was taken by Micheal C. Hansen in 1976.
An outcrop of the Allegheny Group showing slump structure along the Baltimore and Ohio Railroad Company cut northwest of Mineral City, Tuscarawas County, Ohio. This area has shale, siltstone, sandstone, conglomerate, limestone, coal, clay and flint lithologies. Bedrock is from the Pennsylvanian Geologic Period. The photograph was taken by Michael C. Hansen in 1981. The truss bridge was removed, the railroad cut was filled and County Road 107 (Sandyville Road) was constructed on top of the fill on a different allignment in the 1991 construction season by the Tuscarawas County Engineer's Office. The following information concerning the Baltimore and Ohio Railroad Company cut at Mineral City is taken verbatim from...
An outcrop of the Connellsville sandstone of the Conemaugh Group along the United States Route 33 Bypass at Athens, Athens County, Ohio. This area has shale, siltstone, mudstone, sandstone, limestone and coal lithologies. Bedrock is from the Pennsylvanian Geologic Period. The image was taken by Michael C. Hansen in 1974.
An outcrop of the Brush Creek limestone of the Conemaugh Group along Interstate 77 at mile marker 40 south of Byesville, Guernsey County, Ohio. This outcrop location is referred to as an
An outcrop of Bedford Shale at the Galena Shale, Tile and Brick Company claypit near Galena, Delaware County, Ohio. Unit lithology in this area is shale, siltstone, and sandstone. Bedrock is from the Devonian Geologic Period. The photograph was taken by Michael C. Hansen in 1975.
Outcrop showing contact between the uranium-rich Huron Member of the Ohio Shale with overlying till of Wisconsinan age along the Lake Erie shoreline at Showse Park, Vermilion, Lorain County, Ohio. Pleistocene glaciers eroded large amounts of Ohio Shale and incorporated these fragments in tills. Note vertical cracks in the till. These fissures provide avenues for upward migration of radon. Unit lithology in this area is shale, siltstone, and sandstone. Bedrock is from the Devonian Geologic Period. Ohio Geological Survey employee Merrianne Hackthorn is pictured next to the outcrop for scale. The photograph was taken by David B. Buchanan probably in April 1983.
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...


map background search result map search result map Showse Park, Lorain County, Ohio, 1983 Bedford Shale Outcrop, Galena, Delaware County, Ohio, 1975 Leo Petroglyph State Memorial, Jackson County, Ohio, 1987 Thompson Ledges, Geauga County, Ohio, 1975 The Sharon Sandstone/Conglomerate, Summit County, Ohio, 1981 The Sharon Sandstone/Conglomerate, Summit County, Ohio, 1981 Newland (No. 4, Brookville) Coal, Bethlehem Township, Stark County, Ohio, 1960 Putnam Hill Limestone Type Section, Putnam Hill Park, Zanesville, Ohio, 1952 Homewood Sandstone in PikeTownship, Stark County, Ohio, 1960 Strata at Glen Ebon, York Township, Athens County, Ohio, 1976 Strata at Glen Ebon, York Township, Athens County, Ohio, 1976 Baltimore and Ohio Railroad at Mineral City, Tuscarawas County, Ohio, 1981 Connellsville Sandstone Outcrop Near Athens, Athens County, Ohio, 1974 Brush Creek Limestone at Byesville, Guernsey County, Ohio, 1981 Conkle's Hollow State Nature Preserve, Hocking Hills State Park, Hocking County, Ohio, 1966 Rockbridge State Nature Preserve, Hocking County, Ohio, 1973 South Bass Island, Ottawa County, Ohio, 1952 Faulting at Plum Run Stone Quarry Near Peebles, Adams County, Ohio, 1978 SME Bessener, Inc., Quarry at Mahoning County, Ohio, 1985 Galena Shale, Tile, and Brick Company in Delaware County, Ohio, 1975