Shock-metamorphosed rutile grains containing the high-pressure polymorph TiO2-II in four Neoarchean spherule layers

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Frank C. Smith, Billy P. Glass, Bruce M. Simonson, Joseph P. Smith, Alexandra E. Krull-Davatzes, Karl S. Booksh Geology DOI: 10.1130/G38327.1 First Published on August 01, 2016 LINK “At least 17 spherule layers are presently…

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