Structure contour map on the Precambrian unconformity surface in Ohio and related basement features, by M. T. Baranoski, 2002. Scale 1:500,000 (1 inch equals about 8 miles).
More than 30 years have elapsed since the ODNR Division of Geological Survey last published a statewide interpretation of the Precambrian unconformity surface. A large number of wells have been drilled to the Precambrian since that time, and revolutionary discoveries have changed our understanding of this ancient terrain. Map PG-23 and the accompanying report show the interpreted Precambrian unconformity surface and structural data currently available for the Precambrian surface in Ohio.
An 18-page report accompanies the map, map ships folded along with the report.
Preceded by DCMS-7, DCMS-11, and DCMS-12.
You can Purchase this map and report or download the PDF for free from the Survey's Web site: www.OhioGeology.com.
