Category Archives: strike-slip

Earthquake Report: Cayman Trough!

Just a couple hours ago there was an earthquake along the Swan fault, which is the transform plate boundary between the North America and Caribbean plates. The Cayman trough (CT) is a region of oceanic crust, formed at the Mid-Cayman … Continue reading

Posted in caribbean, earthquake, education, geology, strike-slip

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

Earthquake Report: Laytonville (northern CA)!

This morning there was a small earthquake in a region of northern California between two major faults that are part of the Pacific-North America plate boundary. The M 4.3 earthquake occurred between the San Andreas fault (SAF) to the west … Continue reading

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

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: Caroline Ridge

There was an earthquake sequence beginning 2017.12.08 along the northern flank of Caroline Ridge in the western Pacific Ocean, near the intersection of the Mariana and Yap trenches. The two largest earthquakes, M 6.5 and M 6.4, are both strike-slip … Continue reading

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

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: North Bismarck plate

Well, what have we here? We have an interesting crustal earthquake in the North Bismarck plate. Why is it interesting? This is an interesting earthquake because of its orientation and mechanism. This region of the world is one of the … Continue reading

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

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 #2!

We had another earthquake in China today! This one along the northern Tian Shan Mountains, on the other side of the orogenic wedge from the earthquakes from earlier today. This M 6.3 earthquake is along a thrust fault, while the … Continue reading

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

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