Western Earth Surface Processes Locations of selected field trip
destinations to observe features associated with the Hayward
Fault. Locations were chosen based on public access, and some
locations discussed highlight regional geologic features,
historic buildings, or infrastructure. General locations of
field trip destinations, shown as green boxes, are projected on
a satellite image (modified from USGS Quaternary earthquake
fault data and imagery retrieved from Google Earth) (from figure
1). This report describes self-guided field trips to one of
North America’s most dangerous earthquake faults—the Hayward
Fault. Locations were chosen because of their easy access using
mass transit and/or their significance relating to the natural
and cultural history of the East Bay landscape. This field-trip
guidebook was compiled to help commemorate the 140th anniversary
of an estimated M 7.0 earthquake that occurred on the Hayward
Fault at approximately 7:50 AM, October 21st, 1868. Although
many reports and on-line reso