In Transit
Monday July 21, 2008
By the way, I'm in the field this week, trying to see and absorb as much New York/New England geology as I can before Friday. Look for some posts during the week, maybe even photos.
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Comments
I am a long term viewer of your about.com: geology stuff.
Regarding hotspots, why not a radioactive concentration producing them? The earth is not homogeneous, especially in the mantle.