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Impact mixing among rocky planetesimals in the early Solar System from angrite oxygen isotopes - Nature Astronomy
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Angrite meteorites are thought to represent ancient basaltic igneous rocks that formed inward of Jupiter's orbit on the basis of their isotopic parameters such as ε50Ti, ε54Cr and Δ17O in addition to Fe/Mn ratios of pyroxene. New bulk oxygen isotope measurements of nine angrites, and of olivine 'xenocrysts' and groundmass fractions from three quenched angrites, however, reveal clear isotopic disequilibrium, implying an impact melt origin.
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