Part 9/11:
Throughout the study of the Appalachian region, geological maps serve as invaluable tools. They detail the spatial distribution of different rock types, highlight their stratigraphy, and indicate the ages of formations. By examining these maps, one can trace the geological journey of the Appalachians—reading the history of their formation and metamorphosis over hundreds of millions of years.
For example, within the Great Smoky National Park area, a cross-section analysis reveals the varied geological provinces present. One can differentiate between metamorphic zones and areas with rich sedimentary deposits that were laid down during periods of tectonic inactivity.