Friday, January 10, 2014

Still Shakin', Central VA

As word was passed on through local news of the placement of seismometers across the Central Va. Equake zone by the US Geological Survey the old fault zone responded; a little rumble and a tiny shake this cold, wet morning.  It hasn't shown up on the daily earthquake list, may have been below 1 on the Richter scale, but did remind those of us in the heart of the zone of our residence on a less than stable portion of the big planet. Not sure seismometers are being place on this raw day but be nice to have more quake detection in our "newly" rediscovered quake zone.
No big news elsewhere, so far, for 2014. Plate boundaries are where the action is. Oklahoma has become a steady, low level, standard on the US list. I'm not sure of its ancient plate edge boundary history, maybe the edge of a billion year old Central North American rift zone, maybe there is serious fracking going on out there on the edge of the plains that's adding to the old breaks... It's a bold geologist that claims to know all the causal agents inside this large, spinning chunk of rock we have the pleasure to ride upon. A 2.2 shake in the Charleston, SC. area yesterday delivered the same reminder we just received from the planet, "heh, don't forget, you live in an earthquake zone".
Louisa Co. HS will be conducting a quake drill on a nice day sometime soon but as a teacher of Earth Science, my new students have already been reminded. It's a shaky, random-ish world, be ready to hang on, today on Earth!

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