The image shows a close-up of sections in Box 22 of Ohio Division of Geological Survey's core DGS 3274 at the interval of 219.5 to 220.5 feet and 221.5 to 222.5 feet. The section includes fossil bearing limestone. This core section comes from the central uplift of the Serpent Mound Impact Structure, which has dolomite, shale, limestone, sandstone, and siltstone lithologies. Because of the geologic forces that have acted on the site of the impact structure, bedrock in the area is a mixture of uplifted, down dropped, faulted, folded and eroded rock from the Ordovician, Silurian, Devonian and Mississippian Geologic Periods. In 1979, John L. Carroll Mineral Exploration of New York City drilled two core holes in the Serpent Mound Impact [...]
