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Upper Mercer Flint
Upper Mercer flint or Upper Mercer chert is a type of flint, or a pure form of chert, found in Coshocton, Hocking, and Perry counties of Ohio. Made of forms of silica and quartz, the hard and brittle stone was used by prehistoric people to make tools and weapons. To create stone tools, flint was heated to make chipping away at the stone easier, and then the flint was chipped to form razor-sharp edges. Resulting tools included spearheads, scrapers, knives, and arrows. Ohio flint is found between layers of Cambridge Limestone and Brassfield Limestone. It was deposited during the Paleozoic Era in the seas that covered what is now Ohio. Other deposits can be found in soil moved by glaciers, in glacial till or as erratics. The Welling site, an Upper Mercer flint quarry, is located on the eastern boundary of the town of Nellie in the Walhonding River Valley. It is 14 miles below the glacial boundary in the unglaciated Allegheny Plateau. The hills on either side of the va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossiliferous Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie West Outcrop, Coshocton County, Ohio, USA) 1 (31803128551)
Fossiliferous limestone is any type of limestone, made mostly of calcium carbonate (CaCO3) in the form of the minerals calcite or aragonite, that contains an abundance of fossils or fossil traces. The fossils in these rocks may be of macroscopic or microscopic size. The sort of macroscopic fossils often include crinoid stems, brachiopods, gastropods, and other hard shelled mollusk remains. In some cases, microfossils such as siliceous diatom shells in deposition may convert over time to opal and chert, providing the only inferred evidence of bioactivity preserved in limestone. Fossiliferous limestone is termed biosparite limestone under the Folk classification of sedimentary rocks. Lagerstätte are a class of fossil bearing rocks that includes fossiliferous limestone. Use Fossils in general provide geologic clues to the environment of deposition, rock formation, and the types of biological activities present at the time. Index fossils are more helpful in pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Erratic
A glacial erratic is glacially deposited rock differing from the type of rock native to the area in which it rests. Erratics, which take their name from the Latin word ' ("to wander"), are carried by glacial ice, often over distances of hundreds of kilometres. Erratics can range in size from pebbles to large boulders such as Big Rock () in Alberta. Geologists identify erratics by studying the rocks surrounding the position of the erratic and the composition of the erratic itself. Erratics are significant because: *They can be transported by glaciers, and they are thereby one of a series of indicators which mark the path of prehistoric glacier movement. Their lithographic origin can be traced to the parent bedrock, allowing for confirmation of the ice flow route. *They can be transported by ice rafting. This allows quantification of the extent of glacial flooding resulting from ice dam failure which release the waters stored in proglacial lakes such as Lake Missoula. Err ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jackson County, Ohio
Jackson County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 32,653. Its county seat is Jackson. The county is named for Andrew Jackson, a hero of the War of 1812 who was subsequently elected President of the United States. It is known as "The Little Wales of Ohio." Jackson County comprises the Jackson, OH Micropolitan Statistical Area. History Jackson County is north of the Ohio River in eastern Ohio, an area that was long occupied by various tribes of Native Americans. Evidence of this era in the Ohio Valley is found in the area's large burial and ceremonial mounds and petroglyphs including the Leo Petroglyph. Tribes that inhabited the area in the Colonial period included with Mingo, Lenape, and Shawnee. Westward expansion by American pioneers displaced the Indigenous People who were killed in wars or relocated to the Great Plains and placed on reservations following the passage of the Indian Removal Act. The pioneer settlers cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vinton County, Ohio
Vinton County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 12,800, making it the least populous county in the state. Its county seat is McArthur. The county is named for Samuel Finley Vinton, US Representative from Ohio (1823–37, 1843–51). Geography According to the United States Census Bureau, the county has a total area of , of which is land and (0.6%) is water. Waterways Most of Vinton County is in the Raccoon Creek watershed. Most of the rest of the county, to the west, is in the Salt Creek watershed. Adjacent counties * Hocking County (north) * Athens County (northeast) * Meigs County (east) * Gallia County (southeast) * Jackson County (south) * Ross County (west) Demographics 2000 census As of the census of 2000, there were 12,806 people, 4,892 households, and 3,551 families residing in the county. The population density was 31 people per square mile (12/km2). There were 5,653 housing units at an average den ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Licking County, Ohio
Licking County is a county located in the central portion of the U.S. state of Ohio. At the 2020 census, the population was 178,519. Its county seat is Newark. The county was formed on January 30, 1808, from portions of Fairfield County. It is named after the Licking River, which is thought to be named for the salt licks that were in the area. However, one account explains it as an English pronunciation of the river's indigenous Delaware name ''W'li/'ik'/nk'', which means "where the flood waters recede". Licking County is part of the Columbus, OH Metropolitan Statistical Area. Geography According to the United States Census Bureau, the county has a total area of , of which is land and (0.7%) is water. It is the third-largest county in Ohio by land area. Adjacent counties * Knox County (north) * Coshocton County (northeast) * Muskingum County (east) * Perry County (southeast) * Fairfield County (southwest) * Franklin County (west) * Delaware County (northwest) Maj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muskingum County, Ohio
Muskingum County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 86,410. Its county seat is Zanesville. Nearly bisected by the Muskingum River, the county name is based on a Delaware American Indian word translated as "town by the river" or "elk's eye". Muskingum County comprises the Zanesville, OH Micropolitan Statistical Area, which is also included in the Columbus-Marion-Zanesville, OH Combined Statistical Area. The Zanesville Micropolitan Statistical Area is the second-largest statistical area within the Combined Statistical Area, after the Columbus Metropolitan Statistical Area. Name The name ''Muskingum'' may come from the Shawnee word ''mshkikwam'' 'swampy ground'. The name may also be from Lenape ''"Machkigen,"'' referring to thorns, or a specific species of thorn bush. ''Muskingum'' has also been taken to mean 'elk's eye' (''mus wəshkinkw'') by folk etymology, as in ''mus'' 'elk' + ''wəshkinkw'' 'its eye'. Moravian mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanport Flint
Flint Ridge Ancient Quarries and Nature Preserve is a Native American flint quarry located in Hopewell Township, Licking County, Ohio, about three miles north of Brownsville at the intersection of Brownsville Road and Flint Ridge Road. Old quarry pits are visible, and a museum is located on the site. Flint is a variety of quartz and the flint on the ridge is within the Vanport Limestone Member of the Allegheny Formation of Pennsylvanian age. Flint Ridge was an important source of flint and Native Americans extracted the flint from hundreds of quarries along the ridge. This "Ohio Flint" was traded across the eastern United States and has been found as far west as the Rocky Mountains and south around the Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of .... Refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvanian (geology)
The Pennsylvanian ( , also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period. It lasted from roughly . As with most other geochronologic units, the rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few hundred thousand years. The Pennsylvanian is named after the U.S. state of Pennsylvania, where the coal-productive beds of this age are widespread. The division between Pennsylvanian and Mississippian comes from North American stratigraphy. In North America, where the early Carboniferous beds are primarily marine limestones, the Pennsylvanian was in the past treated as a full-fledged geologic period between the Mississippian and the Permian. In parts of Europe, the Mississippian and Pennsylvanian are one more-or-less continuous sequence of lowland continental deposits and are grouped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flint Ridge State Memorial
Flint Ridge Ancient Quarries and Nature Preserve is a Native American flint quarry located in Hopewell Township, Licking County, Ohio, about three miles north of Brownsville at the intersection of Brownsville Road and Flint Ridge Road. Old quarry pits are visible, and a museum is located on the site. Flint is a variety of quartz and the flint on the ridge is within the Vanport Limestone Member of the Allegheny Formation of Pennsylvanian age. Flint Ridge was an important source of flint and Native Americans extracted the flint from hundreds of quarries along the ridge. This "Ohio Flint" was traded across the eastern United States and has been found as far west as the Rocky Mountains and south around the Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United S .... Ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pottsville Formation
The Pennsylvanian Pottsville Formation is a mapped bedrock unit in Pennsylvania, western Maryland, West Virginia, Ohio, and Alabama. It is a major ridge-former in the Ridge-and-Valley Appalachians of the eastern United States. The Pottsville Formation is conspicuous at many sites along the Allegheny Front, the eastern escarpment of the Allegheny or Appalachian Plateau. Description The Pottsville Formation consists of a gray conglomerate, fine to coarse grained sandstone, and is known to contain limestone, siltstone and shale, as well as anthracite and bituminous coal. It is considered a classic orogenic molasse. The formation was first described from a railroad cut south of Pottsville, Pennsylvania. Nomenclature and Stratigraphy The relationship to the term "Pottsville" and actual lithologic units is complex. Most fundamentally, the unit may be considered a Formation or a Group. As a Formation, the Pottsville may encompass the following members depending on the state in w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allegheny Plateau
The Allegheny Plateau , in the United States, is a large dissected plateau area of the Appalachian Mountains in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio. It is divided into the unglaciated Allegheny Plateau and the glaciated Allegheny Plateau. The plateau extends southward into western West Virginia, eastern Kentucky and Tennessee where it is instead called the Cumberland Plateau. The plateau terminates in the east at the Allegheny Mountains, which are the highest ridges just west of the Allegheny Front. The Front extends from central Pennsylvania through Maryland and into eastern West Virginia. The plateau is bordered on the west by glacial till plains in the north, generally north of the Ohio River, and the Bluegrass region in the south, generally south of the Ohio River. Elevations vary greatly. In the glaciated Allegheny Plateau, relief may only reach one hundred feet or less. In the ungla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Boundary
This a partial list of glacial moraines. They are arranged by continents and divided by related hydrologic basins. This list is incomplete. Please improve the listing. North America Moraines of the Great Lakes Region Lake Ontario Basin * Oak Ridge * AldenChapter XVIII, Glacial Lake Wayne; Frank B. Taylor; The Pleistocene of Indiana and Michigan, History of the Great Lakes; Monographs of the United States Geological Survey, Vol. LIII; Frank Leverett and Frank B. Taylor; Washington, D.C,; Government Printing Office; 1915 * Buffalo * Niagara Falls * Forest * GowandaChapter 13, Minor Moraines of the Late Wisconsin Stage; Monographs of the United States Geological Survey XLI; Frank Leverett; U.S. Government Printing Office; Washington; 1901 * Hamburg * Marilla * Alden * Pembroke * Batavia * Barre *Alboin Lake Erie Basin * Waterloo Geology of the Great Lakes Hough, Jack L.; University of Illinois Press, Urbana, 1958 * Salamonie * Trafalgar * Defiance * Fort Wayne * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
