What’s Shakin? Earthquakes, That’s What

Check this out:

USGS Map This is a very sparsely populated area between Mono Lake and Lake Tahoe right along the Nevada border.

25 earthquakes between 2.5 and 5.9 on the Richter Scale, all in about 90 minutes starting at 3:49 PDT today. And they keep coming – there were 2 more as I typed this,

We’re maybe 200 miles away, but I felt the first one – 5.9 – and so checked the USGS Map linked to above, as I habitually do in such cases.

This area, the backside of the Sierra Nevada range, is geologically interesting. 700,000 years ago, a giant volcanic eruption left a 20 x 10 mile caldera. The San Andreas fault system get the press, for the very good reason that much of its course lies under or near heavily populated areas. But there is also a lot of geologic activity along the eastern Sierra Nevada, a very sparsely populated area.

don’t know what, if anything, is up, but I’ll keep y’all posted. We’re up to *30* earthquakes of 2.5 or greater in the time it took me to write this post. Very unusual.

Author: Joseph Moore

Enough with the smarty-pants Dante quote. Just some opinionated blogger dude.

5 thoughts on “What’s Shakin? Earthquakes, That’s What”

  1. Whoa.

    I expect you’re used to them, but I’ve only ever been in one quake – the 5.9 that hit around here in 2011. Felt seasick the rest of the day.

    1. The joke in the movie Independence Day, where a character in California says something like “Not even a four pointer. Go back to sleep.” cracks up the locals. So true.

      This was determined to be a 6.0 quake – a couple hundred miles away, on the other side of the mountains, so we barely felt it. None of the aftershocks have come close -yet – biggest at 5.2. So, just a few seconds of swaying here, that’s all.

      The geology of CA – lots of faults mean fractured plates and subplates – means, oddly enough, the waves don’t carry well. An earthquake in MO is more likely to be felt in NY than a similar sized one in NV is to be felt in SF.

      1. I’ll bet you know John McPhee’s Annals of the Ancient World. Now I want to go reread the chapters on “Assembling California”.

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