Category Archives: geology

2017/07/20
6:16 PM
by: Jay Patton

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

2017/07/18
10:00 AM
by: Jay Patton

Earthquake Report: Bering fracture zone: UPDATE #1

Well, based upon a comment on twitter, I thought it prudent to review the seismicity of this region at the westernmost part of the western Aleutian Islands. For many years I considered this region part of the subduction zone that … Continue reading →

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

2017/07/17
9:08 PM
by: Jay Patton

Earthquake Report: Western Aleutians

We just had an earthquake along the western Aleutian Islands, very close to the international date line. In this region places often have more than two names, depending upon who drew the map. The majority of the Aleutian Islands are … Continue reading →

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

2017/06/22
10:26 AM
by: Jay Patton

Earthquake Report: Guatemala

This morning we had an earthquake offshore of Guatemala with a magnitude M = 6.8. Here is the USGS website for this earthquake. This earthquake occurred to the east of a sequence from about a week ago. Here is my … Continue reading →

Posted in earthquake, geology, pacific, plate tectonics, subduction

2017/06/18
7:50 PM
by: Jay Patton

Earthquake Report: Guatemala

There was a really cool earthquake sequence a few days ago on and offshore of Guatemala. Offshore of Guatemala in the Pacific Ocean, the Cocos plate subducts beneath the North America and Caribbean plates (NAP & CP). The transform plate … Continue reading →

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

2017/06/18
3:45 PM
by: Jay Patton

Earthquake Report: Westernmost Aleutian Arc

This earthquake happened a couple weeks ago, but was interesting and I have been looking forward to following up on this with a report. Here is the USGS website for this M 6.8 earthquake. The M 6.8 earthquake happened in … Continue reading →

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

2017/06/12
12:57 PM
by: Jay Patton

Earthquake Report: Turkey!

We had a couple of earthquakes in western Turkey today (in the Aegean Sea offshore of the Island of Lesbos, part of Greece). The M 6.3 earthquake shows evidence for extension (normal fault), based on the moment tensor (read below). … Continue reading →

Posted in earthquake, europe, Extension, geology, plate tectonics

2017/06/11
12:40 PM
by: Jay Patton

Earthquake Report: Trinidad, California

Early this morning, I was awakened by a mild jolt. I thought, well, seems like a M 3+- nearby. I did not get out of bed. The main shaking lasted a couple of seconds, though it seemed that there was … Continue reading →

Posted in cascadia, earthquake, geology, gorda, pacific, plate tectonics, San Andreas, strike-slip, subduction

2017/05/29
4:51 PM
by: Jay Patton

Earthquake Report: Sulawesi, Indonesia

There was a series of earthquakes in Sulawesi, Indonesia earlier today, with a mainshock having a magnitude of M 6.8. This series of earthquakes is interesting as it does not occur on the main plate boundary fault, but on upper … Continue reading →

Posted in asia, earthquake, education, Extension, Indonesia, plate tectonics

2017/05/11
6:04 PM
by: Jay Patton

Earthquake Report: Aleutian Trench

Well, well, well. What have we here. We have some earthquakes that are related to each other and some earthquakes that are not. Less than 2 weeks ago there initiated a sequence of earthquakes along a fault splaying off of … Continue reading →

Posted in alaska, earthquake, Extension, geology, plate tectonics, strike-slip, subduction