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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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New Madrid Fault Zone extends to the North

The great thing about the Oklahoma seismic zone is its ability to get everything else excited.  This is an M4+ earthquake, with an intensity of 5.  Right now, it's officially an m3.2 but it was recorded as a 4 in many places.  That means it had a strong directivity and it shows the classical felt area of a thrust fault. I've always said the existing NMFZ was dead in the old place.  It

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