Lightning analysis can be done for individual prospects. In this example an interpretation of basement faulting from aeromagnetic data was overlaid on contours of lightning density. The Aeromagnetic data was supplied by Applied Geophysics of Salt Lake City. They have a residual mapping process called NewMag(R), which allows more accurate interpretation of basement faulting patterns. In this area, as in the Michigan example, the Black River - Trenton is altered to dolomite by hydrothermal fluids. This alteration is expected to be pronounced at basement fault intersections. Note how the lightning density anomallies, dark red to white countorus, occur consistently at these intersections. The cross-section on the left shows airmag data in green and lightning strike density in yellow. Notice how the two curves somewhat follow each other. The cross-section on the right shows key attribute average values from the NLDN database along the same profiles.