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Item Surficial geology of the Chillicothe East Quadrangle, Ohio(Ohio Department of Natural Resources, 2016-08) Erber, Nathan R.; Spahr, Paul N.Item Drift thickness of the Chillicothe East Quadrangle, Ohio(Ohio Department of Natural Resources, 2016-08) Erber, Nathan R.; Spahr, Paul N.Item Digital elevation of the Chillicothe East Quadrangle, Ohio(Ohio Department of Natural Resources, 2016-08) Erber, Nathan R.; Spahr, Paul N.Item Bedrock topography of the Chillicothe East Quadrangle, Ohio(Ohio Department of Natural Resources, 2016-08) Erber, Nathan R.; Spahr, Paul N.Item Potential for mineable bedrock in the Lima 30 x 60-minute quadrangle in Ohio(ODNR Division of Geological Survey, 2013-08) Jones, D. M.; Pavey, R. R.; Larsen, G. E.; Aden, D. J.; Angle, M. P.Bedrock geology in the Lima quadrangle ranges from the Ordovician-age Cincinnati group to the Silurian-age Salina Group (Slucher and others, 2006). Derivative mapping shows that four units have potentially economic-quality carbonate rock occurring under thin cover. These units are, in ascending order, Lockport Dolomite, Greenfield Dolomite, Tymochtee Dolomite, and Salina undifferentiated. Most of the carbonate rocks in the Lima quadrangle are considered good to fair in quality for the production of aggregates or other commercial uses, such as extenders or fillers, and agricultural lime. Limestone and dolomite production in 2011 from quarries located in the Lima quadrangle was nearly 3.3 million tons, which is approximately 6.2 percent of the state's total annual crushed stone production (Wolfe, 2012). The Lima map is intended as a general guide to exploration for potential crushed stone resources. The map also may be useful for land-use planning and zoning. Because the Lima map is based on reconnaissance-level bedrock-topography and bedrock-geology maps, it should not be used for resource leasing purposes. A more detailed geologic and engineering investigation utilizing soils maps, additional water well data, drilling, and laboratory testing of chemical and physical properties would be needed to delineate and evaluate the economic viability of the carbonate resource. Additional studies of possible detrimental geologic conditions, such as reefal structures prevalent in the Lockport Dolomite, shale interbeds, karst development, or the effect of mapped faults on quarrying procedures, also would need to be completed before making mining decisions. References Slucher, E. R., Swinford, E. M., Larsen, G. E., Schumacher, G. A., Shrake, D. L., Rice, C. L., Caudill, M. R., and Rea R. G., Cartography by Powers, D. M., 2006, Bedrock geologic map of Ohio: Columbus, Ohio Department of Natural Resources, Division of Geological Survey Map, BG-1, scale 1:500,000. Wolfe, M. E., 2012, 2011 Report on the Ohio Minerals industries—An annual summary of the state’s economic geology: Columbus, Ohio Department of Natural Resources, Division of Geological Survey, 35 p., accessed atItem Karst Flooding in Bellevue, Ohio, and Vicinity - 2008(ODNR Division of Geological Survey, 2012-07-12) Swinford, E. Mac; Powers, Donovan M.; Angle, Michael P.; Pavey, Richard R.On March 18, 2008, ground water levels rose to a 30-year high in the Bellevue, Ohio, area. Surface and near-surface geologic conditions combined with unusually high precipitation caused extensive flooding of fields, roadways, and residences. Existing basins and sinkholes, caverns, and underground drainage (collectively called karst) exacerbated the flooding and the area drained slowly over the course of months. Map EG-5 describes the flood area and background geology, including karst features and terrains; reviews the nature of the flooding; and provides map documentation of the flooded area for future land-use planning by citizens and government.