Show simple item record

dc.creatorSchumacher, Gregory A.en_US
dc.creatorSwinford, E. Macen_US
dc.creatorShrake, Douglas L.en_US
dc.date.accessioned2006-07-07T17:57:48Z
dc.date.available2006-07-07T17:57:48Z
dc.date.issued1991-03en_US
dc.identifier.citationThe Ohio Journal of Science. v91, n1 (March, 1991), 56-68en_US
dc.identifier.issn0030-0950en_US
dc.identifier.urihttp://hdl.handle.net/1811/23430
dc.descriptionAuthor Institution: Ohio Department of Natural Resources, Division of Geological Surveyen_US
dc.description.abstractThe Grant Lake Limestone, including, in ascending order, the Bellevue, the Corryville, and the Straight Creek Members, and the Grant Lake Formation, including, in ascending order, the Bellevue, the Corryville, and the Mount Auburn Members, are herein defined as lithostratigraphic units in southwestern Ohio. Regional bedrock mapping, shale-percentage and geophysical logs, and mean shale percentage of lithostratigraphic units demonstrate a progressive change from a limestone-dominant stratigraphic section in the Maysville, KY, region to a shale-dominant stratigraphic section in the Cincinnati, OH, region. The Grant Lake Limestone is redefined to account for the progressive decrease in limestone content observed northwestward away from Maysville, KY. The Grant Lake Formation is introduced to describe the shaledominant lateral equivalent of the Grant Lake Limestone in the Cincinnati, OH, region. The Bellevue Limestone, the Corryville Formation, and the Mount Auburn Formation are reduced to members because, in some cases, they are not mappable at 1:62,500 or smaller scales. The Straight Creek Member is introduced to describe the limestone-dominant lateral equivalent of the shale-dominant Mount Auburn Member. The limestone-dominant and shale-dominant lithologies of the Grant Lake Limestone and the Grant Lake Formation can be recognized in shale-percentage and geophysical logs. Correlation between logs led to recognition of these stratigraphic units in the subsurface of southwestern Ohio.en_US
dc.format.extent2923888 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleLithostratigraphy of the Grant Lake Limestone and Grant Lake Formation (Upper Ordovician) in Southwestern Ohioen_US


Files in this item

Thumbnail

Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.

This item appears in the following Collection(s)

Show simple item record