Bedrock-topography map: OF 237 Drift-thickness map: OF 238 General: V 2, pt. 1 Middle Devonian formations: RI 78 Minerals: B 69 Oil and gas, "Big Lime" or deeper wells: OF 45 Quaternary geology: M 2; OF 291, 292
AR Annual Report B Bulletin DCMS Digital Chart and Map Series DDF Digital Data File EGSP Eastern Gas Shales Project EL Educational Leaflet GB Guidebook GF GeoFacts GN Geological Note IC Information Circular M Map Series MR Miscellaneous Report OF Open-File Map OFR Open-File Report OGS Ohio Geological Society publications OTS Ohio Cooperative Topographic Survey publication RI Report of Investigations RP Report of Progress RS Reprint Series TR Technical Report (Division of Shore Erosion) USGS U.S. Geological Survey publication V Volume
Last update on February 18, 2000Division of Geological Survey http://dnr/state.oh.us/geosurvey/
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