Cincinnati Arch

Cincinnati Arch

▪ geological structure, Ohio, United States
      geologic anticlinal (archlike) structure influential during the Paleozoic Era (542 million to 251 million years ago); it existed as a persistent low-lying land area flanked by seas covering a large part of the continent while connected with the ocean. The axis of the Cincinnati Arch extends southward from Ohio to Tennessee. Separated by a structural saddle, its southward extension is known as the Nashville Dome. On the north the Cincinnati Arch has two branches; one, trending west-northwest, is known as the Kankakee Arch. The other branch, trending north-northeast, is known as the Findlay Arch.

      Ordovician rocks occur on the crest of the Cincinnati Arch, whereas Pennsylvanian strata can be found in the flanking basinal areas.

      The Cincinnati Arch began to form during the Middle Ordovician (472 million to 461 million years ago) and was distinctive by the Silurian Period (444 million to 416 million years ago). Uplift occurred in Middle Devonian time (398 million to 385 million years ago), during which considerable erosion took place. Broad doming and uplift again occurred in post-Mississippian time, after which the arch was again submerged. Uplift once again affected the arch in post-Pennsylvanian time.

* * *


Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Cincinnati Arch — Middle Devonian paleogeography The Cincinnati Arch is a broad structural uplift between the Illinois Basin to the west, the Michigan Basin to the northwest and the Appalachian Basin and Black Warrior Basin to the east and southeast. It existed as …   Wikipedia

  • Cincinnati Rollergirls — Metro area Cincinnati, Ohio Country United States Founded 2005 …   Wikipedia

  • Cincinnati Observatory — U.S. National Register of Historic Places U.S. National Historic Landmark …   Wikipedia

  • Cincinnati City Hall — U.S. National Register of Historic Places …   Wikipedia

  • Cincinnati Caledonian Pipes and Drums — Established circa 1912 Location Cincinnati, Ohio Grade 5 …   Wikipedia

  • Cincinnati Work House and Hospital — U.S. National Register of Historic Places Location: Cincinnati, Ohio …   Wikipedia

  • Music Hall (Cincinnati) — Cincinnati Music Hall U.S. National Register of Historic Places U.S. National Historic Landmark …   Wikipedia

  • Elsinore Arch (Cincinnati, Ohio) — Infobox nrhp name = Elsinore Arch caption = location = Cincinnati, Ohio architect = Charles Hannaford cite web|url=http://www.nr.nps.gov/|title=National Register Information System|date=2007 06 30|work=National Register of Historic… …   Wikipedia

  • National Register of Historic Places listings in eastern Cincinnati, Ohio — This is a list of the National Register of Historic Places listings in eastern Cincinnati, Ohio. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in eastern Cincinnati, Ohio,… …   Wikipedia

  • Eden Park, Cincinnati — Eden Park, owned and operated by the Cincinnati Park Board, is located in the Mt. Adams community of Cincinnati, Ohio. The park began as the designation for the city s water supply, purchased in 1859. However, early on the city saw that the area… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”