To access the lithotectonic data first connect to the CBGIS drive.
All data is under CBGIS/Appalachian Data/
It is further divided into 2 sections, North and South
Each of these is broken down into 2 sections, base and geology. Base has the basemaps and waterbodies. Geology has the faults and different formations.
You can add this as described here
These are the primary files from the Appalachian data set that you will want to use.
Please use proper citation as found in the base directory of CBGIS/Appalachian Data/.