| Abstract: | The aquifers underlying a 44,000-square-mile area in western Ohio, eastern and north-central Indiana, and parts of Illinois and Michigan consist of carbonate bedrock of Silurian and Devonian age and glacial deposits of Quaternary age. Regionally, the top of the bedrock aquifer can be defined by the altitude of the bedrock-surface in areas where the aquifer units crop out. The bedrock-surface altitude ranges from 400 feet above sea level within the main stem of the Miami River Valley system in southwest Ohio to 1400 feet above sea level near Indian Lake in central Ohio. A major contributor to the features of the bedrock-surface was the pre-Pleistocene Teays-Mahomet River system. |
| Genre: | USGS Numbered Series |
| ProdID: | 44761 |
| Citation Author: | Bunner, Danny W., Jr. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 1 map ; 69 x 82 cm., on sheet 105 x 135 cm., folded in envelope 30 x 24 cm. |
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| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 93-4050 |
| Citation Search Results Text: | Bedrock-surface altitude in the midwestern basins and arches region of Indiana, Ohio, Michigan, and Illinois; 1993; WRI; 93-4050; Bunner, Danny W., Jr. |
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| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Bedrock-surface altitude in the midwestern basins and arches region of Indiana, Ohio, Michigan, and Illinois; 1993; WRI; 93-4050; Bunner, Danny W., Jr. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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