Data Modifications 

The following polygons were modified from the digital source material to match 
the paper source map and have the source code NC202.

ZYbA was changed to ZYba (one polygon)
Dsc was changed to DSc (five polygons)
Deleted polygon CZma and removed 3 arcs associated with that polygon.
Changed PzZq to PzZg (one polygon)
Changed CZv to CZfv (one polygon)
Changed CZg to CZbg (one polygon)
Split one polygon of Ybgg into two separate polygons because of province boundaries.

There is a separate fault coverage available from the state survey:
North Carolina Geological Survey - http://www.geology.enr.state.nc.us/