The geology of Ohio formed beginning more than one billion years ago in the Proterozoic eon of the Precambrian. The igneous and metamorphic crystalline...

are a till plain landform in Northern Ohio, located near the shore of Lake Erie and produced by the retreat of the Wisconsin glaciation. Since glacial...

 – the drift-thickness map of Ohio" (PDF). Ohio Geology. No. 1. Ohio Department of Natural Resources, Division of Geological Survey. pp. 1, 3–5. Archived...

Ohio (/oʊˈhaɪ.oʊ/ oh-HY-oh) is a state in the Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West...

is a 2,000 km (1,200 mi) long geological rift in the center of the North American continent and south-central part of the North American plate. It formed...

It is one of the most biodiverse temperate forests in the world. Geologically, Appalachian Ohio corresponds closely to the terminal moraine of an ancient...

The geology of the Appalachians dates back more than 1.2 billion years to the Mesoproterozoic era when two continental cratons collided to form the supercontinent...

American Continent. The geology is characterized by layers of shale interspersed with layers of fossiliferous limestone. Layers of shale are believed to...

near what is now Chillicothe, Ohio. The lake has been the repeated topic of research over the past 100 plus years. In geologic terms, the lake's life span...

S. Hageman, an early settler. U.S. Geological Survey Geographic Names Information System: Hagemans Crossing, Ohio "Warren County". Jim Forte Postal History...

The Ohio River is a 981-mile-long (1,579 km) river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing...

1821. U.S. Geological Survey Geographic Names Information System: Crosswick, Ohio The History of Warren County, Ohio: Containing a History of the County ;...

U.S. Route 22" (County Route 22A). U.S. Geological Survey Geographic Names Information System: Belvedere, Ohio Rand McNally, The Road Atlas '06, Chicago...

a geologic basin centered on the Lower Peninsula of the U.S. state of Michigan. The feature is represented by a nearly circular pattern of geologic sedimentary...

tavern's signboard for the benefit of the illiterate. U.S. Geological Survey Geographic Names Information System: Blue Ball, Ohio McNutt, Randy (May 15, 1999)...

Virginia, and Ohio. It formed during the Pre-Illinoian ice epoch when the retreat of the ice sheet northwards blocked the drainage of these valleys to...

The Gasport Formation is a geologic formation in the Appalachian Basin and Michigan Basin. This is one of the reef formations separating the Appalachian...

characteristics of the reef area of western Lake Erie. *Ohio Department of Natural Resources, Division of Geological Survey Report of Investigation 82...

York; Parker E. Calkin; Department of Geological Sciences, State University of New York at Buffalo; The Ohio Journal of Science 70(2): 78, March, 1970 Chapter...

Carolina Geology of North Dakota Geology of Ohio Geology of Oklahoma Geology of Oregon Geology of Pennsylvania Geology of Rhode Island Geology of South Carolina...

Office; 1915 Geology and Geomorphology of Glacial Lake Maumee Formation of the Great Lakes Glacial Lakes in Michigan The Quaternary of Northern Ohio: An Outline...

Leverett, Frank; Van Horn, Frank R. (1931). Geology and Mineral Resources of the Cleveland District, Ohio. Washington, D.C.: U.S. Government Printing...

Ohio, United States. It lies at the intersection of U.S. Route 422 with State Route 305 and has a post office with the ZIP code 44470. It is part of the...

the community his family's name. U.S. Geological Survey Geographic Names Information System: Hopkinsville, Ohio "Warren County". Jim Forte Postal History...

A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or...

downhill skiing area in Western Ohio. Zane Shawnee Caverns is another popular attraction nearby, shaped by the same geologic processes that produced Campbell...

Fleming was established in 1866. U.S. Geological Survey Geographic Names Information System: Fleming, Ohio DeLorme, Ohio Atlas & Gazetteer, 7th ed., 2004,...

State of Ohio, Department of Natural Resources, Division of Geological Survey; Columbus, Ohio; 1959 Spencer, J. W., High-level shores in the region of the...

Warren County, Ohio, United States, on the east shore of the Little Miami River about five miles northeast of Lebanon and six miles south of Waynesville...

"Pennsylvania and Ohio Canal (historical)". Geographic Names Information System. United States Geological Survey, United States Department of the Interior...