Measured sections of Ordovician strata in south-central Kentucky

The following sections in south-central Kentucky are part of the data used in our studies of the Upper Ordovician rocks of Kentucky. The studies were part of a geologic mapping program by the U.S. Geological Survey in cooperation with the Kentucky Geological Survey. Most sections were measured in the field with Jacob staff and tape. Color names with numbers are based on comparison with the rock chart by Goddard and others (1948). The cores described are on file at the core library of the Kentucky Geological Survey in Lexington, Ky.