Monthly Archives: March 2015

Moderately Deep Focus Earthquake in Colombia

There was a moderately deep focus extensional earthquake beneath Colombia today. Here is the USGS web page for this earthquake. Here is a map that shows the epicenter as a green dot. Historic earthquake epicenters are plotted in grey. The … Continue reading

Posted in Chemeketa Community College, College Redwoods, earthquake, education, geology, plate tectonics, subduction

Earthquake near Siberut, Indonesia: Sumatra Megathrust

Yesterday (I was busy getting a Mt. St. Helens field trip together, here is the link for that) we had an earthquake with a magnitude M = 6.1. While this is not a large earthquake, it is notable because this … Continue reading

Posted in Chemeketa Community College, College Redwoods, education, geology, humboldt, Indonesia, plate tectonics, subduction, sumatra