Hi All. I though you might be interested in a little bit of the geology of the area I live in. I live near the center of the Coast Ranges Province of California.

North-west-tending valleys characterize the province and mountain ranges formed along major faults as a result of plate tectonic stresses. The mountain ranges consist of uplifted, pre-Cenozoic "basement" rock, comprising a series of narrow v-shaped canyons and ridges flanked by rolling foothills.

Two different rock units, the Franciscan Assemblage and the Great valley Sequence underlie the Diablo Range to the east. To the west, the Gabilan Range is underlain by the granitic Sur Series where "basement" rock is partially blanketed by Cenozoic sedimentary rock. East and south of Hollister, the Diablo Range and the Gabilan Range are capped by Mesozoic volcanic flows.

The valleys are filled with Cenozoic marine and nonmarine sediments. In the valleys east of the San Andreas Rift Zone, Pliocene lakebed sediments are common below elevation 122 meters. Take Care…Don in creepy town.