A diagram by the Ohio Dept. of Natural Resources depicting the various rock layers found in eastern Ohio and where the Utica Shale fits into that picture. The Utica is considered by the U.S. Energy Information Administration to be one of the 7 most important commerical shale plays in the U.S.
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Generalized Geology and Profile of a Utica Shale Well in Eastern OH
1. Generalized Geology and Profile of a Utica
Shale Well Prototype in East Central Ohio
Black Hand Member (ÒBig InjunÓ)
Berea Sandstone
Bedford Shale/
Ohio Shale/
Olentangy Shale
Onondaga Limestone
Oriskany Sandstone
Bass Islands/Salina Group
Lockport Dolomite
ÒClintonÓ sandstone
Queenston Shale/
Cincinnati group
Trenton Limestone/
Black River Group
Beekmantown dolomite
Rose Run sandstone
Copper Ridge dolomite/
Conasauga Group
basal sandstone
Precambrian
ÒBigLimeÓ
Approximate base of potable groundwater
www.OhioGeology.com
Utica Shale Well
(casing width exaggerated)
Interbedded sandstone,
siltstone, shale, coal,
and limestone
Interbedded salt,
anhydrite, dolomite,
and shale
Sand and Gravel
Sandstone
Shale
Limestone
Dolomite
Precambrian
Depth
(feet below
ground surface)
6,000
7,000
8,000
3,000
4,000
2,000
9,000
5,000
1,000
0
5,280 = 1 mile
Horizontal length
up to 7,000 ft
Marcellus Shale
Utica Shale
Typical
water
well
depth
(~150 ft)
Recommended citation: Ohio Division of Geological Survey,
2011, Generalized geology and profile of a Utica Shale well
prototype in east central Ohio: Ohio Department of Natural
Resources, Division of Geological Survey, one sheet.