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		Back to Maps Bedrock Geologic Map of Ohio BG-1—by E. R. Slucher, E. M. Swinford, G. E. Larsen, G. A. Schumacher, D. L. Shrake, C. L. Rice, M. R. Caudill, and R. G. Rea, 2006. Price $15.00 (plus tax and shipping/handling). This 1:500,000-scale map (50 by 42 inches) with associated text and figures reveals not only the characteristics and distribution of the state’s various bedrock formations, but also details the many economic mineral commodities, environmental characteristics, and geological hazards occurring in Ohio. Nearly 50 bedrock units or combinations of units are shown statewide and the legend describes the geologic formations and shows their geologic age. Call 614-265-6576 to order.