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Soil & Water Resources
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Columbus, Ohio
43229-6693

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SAMP
Bedrock Coverage Stratigraphy & File Names 
 

  The coverage name is designed to let the user know that the coverage is from Ohio, contains bedrock aquifer information, the name of the geologic system, and the bedrock aquifer name. As an example Ohbedpd, the Oh stands for Ohio, the bed stands for bedrock, the P is the first letter of the geologic system and the remaining letters define the bedrock formation or unit.

  In our example: Ohbedpd = Ohio + bedrock + Permian + Dunkard Group.

  On the left you will find the coverage filename and on the right is a list of the bedrock units contained in that aquifer coverage. For a more detailed description of available information on bedrock aquifer coverages, please review the 1:100,000 legends or the complete statewide stratigraphic sections included in the zipped file. Below is a list of the bedrock aquifer coverages, the geologic system they belong in, and the formations or units they are composed of.

 

 NOTE: Except for Map Gallery Images, all downloads are self extracting zipped files. Appropriate supporting documents are included within each zipped file. Supporting documents will be in Microsoft Word Office 97 format.

  Files downloaded from the ODNR Centralized GIS Server will contain ArcInfo Export (.e00) files. Downloads from the Division of Water ftp site will contain ArcView Shape (.shp) files. Click here for more information on these file types and the software requirements to use them


 

File Name

Stratagraphic Detail of Coverage

Permian
Ohbedpd Dunkard Group

Pennsylvanian
Ohbedpu Pennsylvanian undivided (Monongahela, Conemaugh, Allegheny and Pottsville Groups)
Ohbedpmc Monongahela and Conemaugh Group
Ohbedpap Allegheny and Pottsville undivided, includes Breathitt Formation
Ohbedpa-up Allegheny and Upper Pottsville undivided, includes the Homewood Sandstone
Ohbedpm-s Middle and Lower Pottsville formations, includes Massillon and Sharon Sandstones

Mississippian
Ohbedmu Mississippian undivided (Maxville, Logan, and Cuyahoga Formations undivided)
Ohbedmlb Logan and Black Hand undivided
Ohbedmlcg Logan and Cuyahoga Group undivided (no Black Hand Present)
Ohbedmcg Cuyahoga Group
Ohbedmcs-b Coldwater Shale, Sunbury-Berea-Bedford undivided
Ohbedms-b Sunbury Shale, Berea Sandstone, and Bedford Shale undivided
Ohbedms Sunbury Shale
Ohbedmb Berea Sandstone
Ohbedmbd Bedford Shale
Ohbedmbbd Berea Sandstone and Bedford Shale undivided
Ohbedmbd-cs Bedford Shale, Cussewago Sandstone

Devonian
Ohbedda Antrim Shale
Ohbeddohol Ohio and Olentangy Shales
Ohbeddcl Columbus-Lucas undifferentiated
Ohbedddc Delaware and Columbus Limestones
Ohbeddtddr Traverse, Dundee, Detroit River Group, includes Holland Quarry Shale

Silurian
Ohbedsus Undifferentiated Salina Dolomite, includes Bass Islands Group
Ohbedssg Salina Group
Ohbedstg Tymochtee and Greenfield Dolomites
Ohbedst-b Tymochtee Dolomite, Greenfield Dolomite, Peebles Dolomite, Lilly Formation, and Bisher Formation undivided
Ohbedsplb Peebles Dolomite, Lilly Formation, and Bisher Formation undivided
Ohbedscse Cedarville Dolomite, Springfield Dolomite, and Euphemia Dolomite undivided, includes Massie Shale and Laurel Dolomite where present.
Ohbedsm-b Massie Shale, Laurel Dolomite, Osgood Shale, Dayton Limestone, and Brassfield Limestone undivided, includes Noland Formation and Estill Shale where present
Ohbedsl Lockport Dolomite/sub-Lockport undifferentiated

Ordovician
Ohobedou Ordovician undivided

For questions or comments please contact:

Jim Raab at
Phone (614) 265-6747
Fax (614) 265-6767 or
E-mail at jim.raab@dnr.state.oh.us