We have four maps that cover the geology of the Felton area.
Stratigraphy, paleontology, and geology of the central Santa Cruz Mountains, California Coast Ranges (Clark)
G4363.S5C5 1981 .C4
Geology and ground-water in western Santa Cruz County, California, with particular emphasis on the Santa Margarita Sandstone (Akers)
G4363.S5C34 1977 .A3
Geologic map of Santa Cruz County, California / Department of the Interior, U.S. Geological Survey (Brabb)
G4363.S5C5 1989.G4
Preliminary geologic map of the Laurel quadrangle, Santa Cruz and Santa Clara Counties, California (Dibblee)
G4363 .S5C5 1978 .D54