Category Archives: strike-slip

Earthquake Report: Blanco fracture zone

As I was getting ready for school today, I noticed the M 6.2 notification from the USGS Earthquake Notification Service. People can sign up for the USGS ENS so that they can get emails when the USGS broadcasts this information. … Continue reading

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

Earthquake Report: Alaska Update

Thanks to Jamie Gurney, I took a looksie at the Kaktovik earthquake sequence again. He had interpreted this sequence to possibly represent an extensional step over in a right-lateral (dextral) strike-slip tectonic fault system. I do not include much background … Continue reading

Posted in alaska, arctic, College Redwoods, earthquake, education, geology, plate tectonics, strike-slip

Earthquake Report: northern Alaska

Well, I awakened shortly after this M 6.4 earthquake hit the northern part of Alaska, along the north Slope, north of the Brooks Range. My inbox has had a lower frequency of USGS ENS notifications since Kilauea has settled down … Continue reading

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

Earthquake Report: Blanco fracture zone

Well, so exciting to have more earthquakes to write about! This summer has been a low seismic summer. The entire year actually. There was an earthquake within the Gorda plate a few days ago, but these M 5.3 and M … Continue reading

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

Earthquake Report: Madagascar!

Today there was an earthquake in a region that we don’t hear about that often. Madagascar is off the coast of southeastern Africa and the oceanic basin to the west is likely formed as part of the East Africa Rift … Continue reading

Posted in africa, earthquake, education, geology, Indian Ocean, plate tectonics, strike-slip

Earthquake Report: Channel Islands Update #1

Well well. There was lots of interest in this M 5.3 earthquake offshore of Ventura/Los Angeles, justifiably so. Southern California is earthquake country. Here is an update. There was lots of information that I was trying to incorporate and I … Continue reading

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

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: Gorda plate!

I was at a workshop to develop a unified strategy for research and monitoring in the Klamath River estuary (led by the Yurok Tribe, Andreas Krauss) yesterday and missed feeling the first of two M 4.6-4.7 earthquakes. I was presenting … Continue reading

Posted in cascadia, earthquake, education, geology, gorda, humboldt, plate tectonics, strike-slip

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 UPDATE #2

I thought it would be interesting to see the seismicity with time. Perhaps this could help us learn about the fault sources associated with this earthquake sequence. I am not sure it worked as some issues cannot be dealt with … Continue reading

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