edit on 16-2-2011 by shikori
because: (no reason given)
Originally posted by Cloudsinthesky
reply to post by G.A.G.
Most surficial rocks in Arkansas are sedimentary, but there are some igneous rocks (with adjacent contact metamorphic rocks) and very low grade regional metamorphic rocks in Arkansas also. The most recent igneous activity in Arkansas occurred some 90 to 100 million years ago.
If that type of activity occured again.........I don't think we will be around to discuss it....
Originally posted by derek_m24
reply to post by Honor93
Just felt another quake...not as strong as the last one
Wanted to add that it seemed like the shaking lasted longer but the initial thud wasn't as strongedit on 16-2-2011 by derek_m24 because: add info
Originally posted by derek_m24
reply to post by ConspiricusTheoricus
There were no earthquakes in this area until around August...since there have been over 700