Category Archives: San Francisco

Earthquake Report: Berkeley, CA (Hayward fault)

There was an earthquake last night (local time) in Berkeley, aligned with the Hayward fault. The Hayward fault is one of the synthetic sister faults to the San Andreas fault, the major player in the dextral (right-lateral, strike-slip) plate boundary … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, San Andreas, San Francisco, strike-slip

San Francisco Bay: San Ramon Earthquake Swarm!

Those of you in the region of the San Francisco Bay are probably wondering what the likelihood that this recent and ongoing swarm of earthquakes in the San Ramon area may lead to a larger earthquake. I do not know, … Continue reading

Posted in College Redwoods, earthquake, education, geology, HSU, plate tectonics, San Andreas, San Francisco, strike-slip, Transform

Small Earthquake in San Francisco Region

There was a M 3.6 earthquake near Concord, CA. This earthquake was felt widely across the S.F. Bay area. The two earthquakes plotted in the map below are both just southeast of the 2014 August Napa earthquake. The Napa earthquake, … Continue reading

Posted in Chemeketa Community College, earthquake, education, geology, HSU, plate tectonics, San Andreas, San Francisco, Transform