Tuesday, October 12, 2010

Noisy Pop-up Debuts in Michigan (Earthquake)


Too bad these geologists in Michigan don't study Canada much.  We have these all the time.  If you cross-cut them, you find that a highly-stressed layer of limestone buckled and popped up.  I can't find a single stupid picture of them outside of the paywall, but we did a ton of work on them.


Anonymous said...

So what you are saying is that this is a small localized phenomenon that doesn't register as seismic activity, but is still a shift in the area bedrock?

Harold Asmis said...

It would still register on nearby seismometers (if they existed), but it would be like a small blast. If you trench it, the rock would only be disturbed down to a few metres.