Geological Survey - science for a changing world

RETURN to Introduction

RETURN to Symbols

USGS DS-541 - Active Traces of the Bartlett Springs Fault

Natural Exposure

Natural exposure of the Bartlett Springs Fault (km 79.68), expressed here as a 2-3-m wide shear zone composed of serpentinite that offsets the latest Pleistocene terrace gravels of Salmon Creek. Location is about 250 m north of Coyote Rocks in Gravelly Valley, Lake County, California.

photograph of natural exposure of the fault