NOTES:

This is a mosaic of aerial photographs from the Fairchild Collection at Whittier College.
Early in my research I searched their entire collection and found two flights that covered the area. This flight, taken in 1940, is the clearer if the two.
In the eastern part, you can see the unconformity between the Simmler and Caliente formations. The Simmler formation appears as a dark gray, while the Caliente formation appears as almost white.
Dibblee [1982] puts the fault at the unconformity between the Simmler and Caliente formations.