Ashley L., TiAni T., Joe O., Kyle V.

Hayward Fault Zone

California

North American & Pacific Plates

Major cities: Richmond, Berkeley, Oakland, San Leanardo, Hayward and Fremont

Millions of people live on or near the fault

Location

The Hayward Fault merges with the Calaveras Fault east of San Jose

Pacific Plate is moving northwest, N. American Plate is moving southeast

The Hayward Fault is 40 miles long and about 8 miles deep and trends along the east side of San Francisco Bay

The fault is about 200 years old

Transform boundary

Earthquakes

Intense folding of rocks in the locked sections

began forming about 12 million years ago as part of the North American/Pacific plate boundary

The Hayward Fault is in nature, on streets , it cracked many sidewalks and curbs.

Features

-1868-HaywardEarthquake

The Hayward earthquake was the last large earthquake to occur on the Hayward fault zone in the San Francisco bay area. It has been estimated to be around a 6.8-7 on the Richter scale. 30 casualties were reported.

Major Tectonic Events

This is a picture of the Alamada courthouse in San Leandro California after the Hayward earthquake.

-fault creep-

The Hayward fault creeps at about 0.5 cm per year. Fault creeping affects the buildings on the fault, as it damages the foundation and cracks the floors of structures on the fault.

Impact of the Hayward Fault Zone

This is a curb that has been cracked due to fault creeping on the Hayward fault.

http://en.wikipedia.org/wiki/Hayward_Fault_Zone

http://seismo.berkeley.edu/blog/seismoblog.php/2008/10/21/today-in-earthquake-history-hayward-1868

http://earthquake.usgs.gov/regional/nca/haywardfault/

Resources