Multiple shock events recorded in the Northwest Africa 2139 LL6 chondrite: Implications for collisional histories of the LL chondrite parent body

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Atsushi Takenouchi, Hirochika Sumino, Karin Shimodate, Akira Yamaguchi Meteoritics & Planetary ScienceVersion of Record online: 24 November 2021 LINK “LL chondrites have experienced multiple shock events; however, the relations of each shock event and their…

Noble gas composition, cosmic-ray exposure age, 39Ar-40Ar, and I-Xe analyses of ungrouped achondrite NWA 7325

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Hopp, J., Schröter, N., Pravdivtseva, O., Meyer, H.-P., Trieloff, M. and Ott, U. Meteorit Planet Sci. doi:10.1111/maps.13062 LINK “Northwest Africa (NWA) 7325 is an anomalous achondrite that experienced episodes of large-degree melt extraction and interaction…

I-Xe dating of aqueous alteration in the CI chondrite Orgueil: I. Magnetite and ferromagnetic separates

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O. Pravdivtseva, A.N. Krot, C.M. Hohenberg Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 12 February 2018 LINK “The I-Xe system was studied in a ferromagnetic sample separated from the Orgueil CI carbonaceous…

I-Xe systematics of the impact plume produced chondrules from the CB carbonaceous chondrites: Implications for the half-life value of 129I and absolute age normalization of 129I-129Xe chronometer

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O. Pravdivtseva, A. Meshik, C.M. Hohenberg, A.N. Krot Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 28 January 2016 doi:10.1016/j.gca.2016.01.012 LINK “It is inferred that magnesian non-porphyritic chondrules in the CB (Bencubbin-type) carbonaceous…

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