Tuesday, July 29, 2008

Whole Lotta Shakin Goin On In CA: 11:42 AM (PST)

Photo: USGS of Imperial Valley, CA surface in farm field. Note the lateral offset of furrows.

At 11:42, we got the shake rattle and roll here in So. Cal. (aka "Shake and Bake Land"). I always immediately file my observations, which you can do also, here.

It was 5.4 on the Richter Scale, and appears to be epicentered in Chino Hills, CA, and while I have not heard the news of which fault this occured on, it is probably the Chino Fault, which you can read about here, page 28, and here. The Chino Fault, apparently a right lateral strike slip fault and part of the active Elsinore Fault System, has had off/on activity.

You can go here for more information.

This Cal Tech site is REALLY nifty as you can look up all kinds of info in your area.

Living geology! Have a nice rock and roll! That's sure what it felt like here, about 15 miles (as the crow flies) away from the epicenter.