Category Archives: Transform

Earthquake Report: Mid Atlantic Ridge

There was a M = 6.8 earthquake along a transform fault connecting segments of the Mid Atlantic Ridge recently. The Mid Atlantic Ridge is an extensional plate boundary called an oceanic spreading ridge. Oceanic crust is formed along these types … Continue reading

Posted in atlantic, College Redwoods, earthquake, education, geology, plate tectonics, strike-slip, Transform

Earthquake Report: Explorer plate

Last night I had completed preparing for class the next day. I was about to head to bed. I got an email from the Pacific Tsunami Warning Center notifying me that there was no risk of a tsunami due to … Continue reading

Posted in cascadia, College Redwoods, earthquake, education, geology, pacific, plate tectonics, strike-slip, Transform

Earthquake Report: Channel Islands

I was finally getting around to writing a report for the deep Bolivia earthquake (Bolivia report here), when a M 5.3 earthquake struck offshore of the channel islands (south of Santa Cruz Island, west of Los Angeles). As is typical … Continue reading

Posted in earthquake, education, geology, los angeles, pacific, plate tectonics, San Andreas, strike-slip, Transform

Earthquake Report: New Ireland!

We had an M 6.8 earthquake near a transform micro-plate boundary fault system north of New Ireland, Papua New Guinea today. Here is the USGS website for this earthquake. The main transform fault (Weitin fault) is ~40 km to the … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, strike-slip, Transform

Earthquake Report: Gulf of Alaska!

I was asleep in bed, trying to catch up to prevent myself from getting ill, when there was a large earthquake in the Gulf of Alaska (GA), offshore of Kodiak, Alaska. When I wakened, I noticed a fb message from … Continue reading

Posted in alaska, earthquake, education, geology, pacific, plate tectonics, strike-slip, subduction, Transform

Earthquake Report: Caroline Ridge Update #1

Well, there was an earthquake this morning (my time) that may help us select a fault plane solution. Recall that these fault plane solutions (moment tensors and focal mechanisms) have two possible fault planes. We need additional information (like fault … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, strike-slip, subduction, Transform

Earthquake Report: Mendocino fault! (northern California)

I was driving around Eureka today, running to the appliance center to get an appliance (heheh). I got a message from a long time held friend (who lives in Salinas, CA). They asked me if I was OK, given that … Continue reading

Posted in cascadia, earthquake, education, geology, gorda, HSU, mendocino, strike-slip, Transform

Earthquake Report: Mid Atlantic Ridge (Chain fracture zone)

If there was an earthquake in the middle of the ocean, and nobody felt it… would it still be an earthquake? Maybe we need to get the Karl Popper out for a good read… There was a good sized shaker … Continue reading

Posted in atlantic, earthquake, education, geology, plate tectonics, strike-slip, Transform

Earthquake Report: China!

This morning (my time) there was a shallow earthquake in western China, near a region that was shocked by an M 7.9 earthquake in 2008 (the “Wenchuan Earthquake”). Here is the USGS website for this M 6.5 earthquake. Below is … Continue reading

Posted in asia, earthquake, education, geology, plate tectonics, strike-slip, Transform

Earthquake Report: Turkey

We just had a good shaker in western Turkey. At the moment, there are over 400 reports of ground shaking to the USGS “Did you Feel It?” web page. The USGS PAGER report estimates that there may be some casualties … Continue reading

Posted in collision, earthquake, education, europe, Extension, geology, plate tectonics, strike-slip, Transform