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Showing 1 to 1 of 1 for “"aplite, granodiorite"”.
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Understanding the evolution of compositional zoning in San Juan Volcanic Field ignimbrites using iron isotope ratios
… range from andesite to rhyolite, and granodiorite to aplite. Fe was purified from dissolved whole rock samples and analyzed for isotopic ratios using a high resolution MC-ICPMS. Results for δ56Fe are consistent with previous work, which has shown δ56Fe values of igneous rocks hover …