Figure 2. Geologic map from a central Tennessee quadrangle [3] showing the locations of the intersection points (black closed circles) of geologic boundaries and topographic contour lines generated using the GIS tools method. These points were generated for all surfaces using the GIS systematic method, but only two surfaces (base of Mfp and Olcy-Obc) using the manual data entry method.

From

Proof of Concept Test to Determine the Viability of Building an Extensive Database for Resolution of Far-Field Effects of the Acadian and Alleghanian Orogenies

Kenneth S. Boling, Robert D. Hatcher Jr, Peter J. Lemiszki, Gary G. Bible

Journal of Geosciences and Geomatics. 2020, 8(1), 9-14 doi:10.12691/jgg-8-1-2