I-Xe age

An I-Xe age 8 Myr after solar system formation in a Hayabusa2 sample records alteration on the parent planetesimal of asteroid RyuguOPEN ACCESS

10/12/2025 06:30 · by karmaka · in aqueous alteration, Hayabusa-2 / 162173 Ryugu, noble gases

S.A. Crowther, J.S. Cowpe, L. Fawcett, J.D. Gilmour, R. Okazaki, F. Kitajima, T. Yada, S. Tachibana, K. Yogata, K. Sakamoto, H. Yurimoto, T. Nakamura, T. Noguchi, H. Naraoka, H. Yabuta, S. Watanabe, Y. Tsuda, M….

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

24/11/2021 15:35 · by karmaka · in LL, ordinary chondrite, parent body, shock metamorphism

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

13/03/2018 07:26 · by karmaka · in achondrite, cosmic ray exposure age (CRE), noble gases, NWA 7325, ungrouped

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

13/02/2018 08:19 · by karmaka · in aqueous alteration, carbonaceous chondrite, CI

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

28/01/2016 07:46 · by karmaka · in carbonaceous chondrite, CB, chondrule, chondrule formation, formation age, magnesian non-porphyritic, radiometric dating

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…