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Dr. Long's
research is in isotope geology, especially to use naturally
occurring radioactivity and its daughter products as a geologic
clock (e.g., to date the crystallization of a magma), and as
a geochemical tracer (e.g., to characterize the source rock
whose melting produced the magma). Dr. Long is interested in
applying the Rb-Sr isotopic age method to clay minerals, one
possibility being to date when weathering had produced an ancient
soil zone. |
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