The map to the left is a geologic map of the Jerusalem Valley area

The area outlined is the approximate boundaries of Six Sigma Ranch visible on this map.

This map shows the various types of rock in the area.

According to Geologist, Dean Enderlin The bulk of Six sigma's ranch is on Franciscan rock which doesn't reliably bear water

The(indicated)pink-red rock is water bearing rock. Very little of the rock on Six sigma ranch is waterbearing rock. The pink rock is the same rock that is under the coons flat subdivision.