Service Description: This data set represents the current state of knowledge on the bedrock geology of Ohio.
Service ItemId: aaff24cf2bda4244a54fd334748f9e96
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
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Description: This data layer contains the 1:500,000-scale bedrock-geology polygons for Ohio. The polygons were originally derived from the 1:24,000-scale bedrock-geology maps, that were created between 1989 through 1998. The bedrock-geology mapping program was initiated in the mid-1980s to perform detailed, 1:24,000-scale bedrock-geology maps. In 1991, the mapping approach was amended to a reconnaissance mapping methodology, but retaining the 1:24,000 scale. Both detail and reconnaissance bedrock-geologic maps were used as the basic information to compile the 1:500,000-scale, Bedrock Geologic Map of Ohio.
Production of the 7.5-minute, reconnaissance and detail, bedrock-geology maps was facilitated by funding provided by the Ohio minerals severance tax and grants from the U.S. Geological Survey COGEOMAP Program and STATEMAP component of the National Cooperative Geologic Mapping Program, the Ohio Department of Transportation, and the Ohio Environmental Protection Agency under provisions of Section 319(h) of the Clean Water Act as amended in 1987. Completion of this map and the bedrock mapping program were facilitated by significant contributions by H.R. Collins, D.N. Hull, T.M. Berg, R.L. Stewart, J. McDonald, K. Callahan, E.V. Kuehnle, J. A. Kriz, R.T. Link, D.A. Stith, C.S. Brockman, K.E. Vorbau, R.R. Pavey, M.T. Baranoski, R.W. Carlton, L. Van Doren, and R.O. Klingbeil. Cross section digitization by J.L. Fox. Reconnaissance mapping consultations provided by C.H. Summerson, J.T. Dutro, and W.D. Martin, who kindly contributed data also on the Dunkard Group in Athens and Washington Counties. S.M. Bergström, G.K. Merrill, B.M. Blake, L.E. Babcock, and M.A. Kleffner graciously assisted with geologic age refinement.
Spatial Reference: 4326 (4326)
Initial Extent:
XMin: -85.6237826172289
YMin: 38.1733725798223
XMax: -79.9695737662773
YMax: 42.0961890755269
Spatial Reference: 4326 (4326)
Full Extent:
XMin: -84.9184092111938
YMin: 38.3802690823233
XMax: -80.4801927112769
YMax: 41.993626583329
Spatial Reference: 4326 (4326)
Units: esriDecimalDegrees
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