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  2. Geology of Ohio - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Ohio

    Ohio produces three billion dollars worth of natural gas and $844 million of oil annually. Coal deposits were first recognized in the 1740s by early settlers and were mapped as early as 1752. Decreased demand due to increased natural gas production has reduced coal mining in the 2010s, although one underground mine and three surface mines ...

  3. Cleveland Shale - Wikipedia

    en.wikipedia.org/wiki/Cleveland_Shale

    The Cleveland Shale is a shale geologic formation in Ohio in the United States. The Cleveland Shale underlies much of northeast Ohio in beds of varying thickness. In northeast Ohio, the member does not appear east of the Grand River. [7] Measurements taken in northeast Ohio show the Cleveland Shale to be 7 feet (2.1 m) [7] to 100 feet (30 m ...

  4. Category:Geologic formations of Ohio - Wikipedia

    en.wikipedia.org/wiki/Category:Geologic...

    Pages in category "Geologic formations of Ohio" The following 11 pages are in this category, out of 11 total. ... Code of Conduct; Developers; Statistics;

  5. Mahoning Valley (geographic) - Wikipedia

    en.wikipedia.org/wiki/Mahoning_Valley_(geographic)

    The Mahoning Valley is a geographic valley encompassing Northeast Ohio and a small portion of Western Pennsylvania that drains into the Mahoning River. According to information at the bottom of Page 321 in a publication [1] by the Ohio Secretary of State's Office, the river name comes from an Indian word meaning “at the licks.”

  6. Haydenville, Ohio - Wikipedia

    en.wikipedia.org/wiki/Haydenville,_Ohio

    Haydenville United Methodist Church, part of the area historic district. Haydenville was founded in 1852. [4] The community was named for Peter Hayden, the original owner of the town site. [5] A post office has been in operation at Haydenville since 1870. [6] Haydenville was the last entirely owned company town in Ohio.

  7. Ohio Shale - Wikipedia

    en.wikipedia.org/wiki/Ohio_Shale

    The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period. ... Code of Conduct; Developers; Statistics; Cookie statement;

  8. Chagrin Shale - Wikipedia

    en.wikipedia.org/wiki/Chagrin_Shale

    The Chagrin Shale reaches a maximum thickness of 1,200 feet (370 m) in eastern Ohio. [7] In Ohio, the Chagrin Shale is thin in the west, [2] [3] and thickens as it proceeds east. [7] The Chagrin Shale also extends south into West Virginia. [9] The unit is also present in Kentucky, where it is mapped as the Chagrin Shale tongue of the Ohio Shale ...

  9. Category:Geologic groups of Ohio - Wikipedia

    en.wikipedia.org/wiki/Category:Geologic_groups...

    This page was last edited on 30 November 2014, at 23:57 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.