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28 September 2010
Speleothem microscopy: soot & aragonite
My friend Dave Auldridge, formerly a structural geology student of mine at George Mason University, is now in grad school at the University of Alabama. Dave is working on an interesting project with speleothems: those drippy looking CaCO3 growths that you find in caves, like stalactites and stalagmites. He’s looking at these speleothems in order to determine paleo-climate with oxygen and carbon isotopes. The carbon soot that’s trapped in the …