Abstract
Petrology and geobarometry establish a link between the southern Sierra Nevada batholith and Salinia, a fault-bounded terrane confined by the Nacimiento fault on the west and the San Andreas fault on the east. Most reconstructions are limited to the pre-San Andreas offset and do not address the Cretaceous westward transport history as the upper plate of a proposed detachment system. Because the sedimentary rocks deposited on these granitoids are Late Cretaceous to Paleocene, most of this pre-Miocene westward transport must have occurred at or slightly above surface temperatures. Low temperature thermochronology (up to 200 degrees C) can provide a window into this time period for northern Salinia, which includes outcrops in Ben Lomond, Montara Mountain, Point Reyes, and Bodega Head.