A common isotopic reservoir for amoeboid olivine aggregates (AOAs) and calcium-aluminum-rich inclusions (CAIs) revealed by Ti and Cr isotopic compositions
Zachary A. Torrano, Conel M.O’D. Alexander, Richard W. Carlson, Jan Render, Gregory A. Brennecka, Emma S. Bullock Earth and Planetary Science LettersVolume 627, 1 February 2024, 118551 LINK “Amoeboid olivine aggregates (AOAs) are the most…
Chondrule-like objects and Ca-Al-rich inclusions in Ryugu may potentially be the oldest Solar System materialsOPEN ACCESS
Daisuke Nakashima, Tomoki Nakamura, Mingming Zhang, Noriko T. Kita, Takashi Mikouchi, Hideto Yoshida, Yuma Enokido, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe,…
Incorporation of 16O-rich anhydrous silicates in the protolith of highly hydrated asteroid Ryugu
Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Motoo Ito, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Richard C. Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu…
In-Situ Oxygen Isotope Study of Anhydrous Minerals in a Ryugu Particle: Implications for the Precursors to CI-Chondrite Parent Bodies
Liu M.-C. McCain K. A. Matsuda N. Yamaguchi A. Kimura M. et al. PDF LPSC 2022 abstract [#2276] “Ryugu’s olivine / Not only chondrule pieces / But also AOA remains.”
Correlated isotopic and chemical evidence for condensation origins of olivine in comet 81P/Wild 2 and in AOAs from CV and CO chondrites
Kohei Fukuda, Donald E. Brownlee, David J. Joswiak, Travis J. Tenner, Makoto Kimura, Noriko T. Kita Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 8 October 2020 LINK “Magnesium stable isotope ratios and minor…
Episodic formation of refractory inclusions in the Solar System and their presolar heritageOPEN ACCESS
K.K. Larsen, D. Wielandt, M. Schiller, A.N. Krot, M. Bizzarro Earth and Planetary Science Letters Volume 535, 1 April 2020, 116088 LINK (OPEN ACCESS) PDF (download) “Highlights • Mg isotopes show multiple populations of refractory…
Rapid condensation of the first Solar System solidsOPEN ACCESS
Yves Marrocchi, Johan Villeneuve, Emmanuel Jacquet, Maxime Piralla, and Marc Chaussidon PNAS first published November 4, 2019 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Chondritic meteorites are composed of primitive components formed during the evolution of…
Refractory inclusions in carbonaceous chondrites: Records of early solar system processes
Alexander N. Krot Meteoritics & Planetary Science First Published: 23 July 2019 LINK “Chondrites consist of three major components: refractory inclusions (Ca,Al‐rich inclusions [CAIs] and amoeboid olivine aggregates), chondrules, and matrix. Here, I summarize recent…
First evidence for silica condensation within the solar protoplanetary disk
Mutsumi Komatsu, Timothy J. Fagan, Alexander N. Krot, Kazuhide Nagashima, Michail I. Petaev, Makoto Kimura, and Akira Yamaguchi PNAS July 2, 2018. 201722265; published ahead of print July 2, 2018. https://doi.org/10.1073/pnas.1722265115 LINK “The oldest solar…
Chondritic ingredients: II. Reconstructing early solar system history via refractory lithophile trace elements in individual objects of the Leoville CV3 chondrite
Andrea Patzer, Dominik C. Hezel, Verena Bendel, Andreas Pack Meteorit Planet Sci. . doi:10.1111/maps.13084 LINK “We performed a LA‐ICP‐MS study of refractory lithophile trace elements in 32 individual objects selected from a single section of…
Chondrule heritage and thermal histories from trace element and oxygen isotope analyses of chondrules and amoeboid olivine aggregatesOPEN ACCESS
Jacquet, E. and Marrocchi, Y. Meteoritics & Planetary Science. doi: 10.1111/maps.12985 First published: 26 September 2017 LINK PDF (OPEN ACCESS) “We report combined oxygen isotope and mineral-scale trace element analyses of amoeboid olivine aggregates (AOA)…
Refractory materials in comet samples.OPEN ACCESS
Joswiak, D. J., Brownlee, D. E., Nguyen, A. N., Messenger, S. Meteorit Planet Sci. doi:10.1111/maps.12877 LINK “Transmission electron microscope examination of more than 250 fragments, >1 μm from comet Wild 2 and a giant cluster…
Ultra-Refractory Calcium-Aluminum-Rich Inclusion in an AOA in CR Chondrite Yamato-793261
M. Komatsu, T. J. Fagan, A. Yamaguchi, T. Mikouchi, M. Yasutake, M. E. Zolensky 48th Lunar and Planetary Science Conference (2017), Abstract #2009 PDF
Chondrule Pyroxene Embedded in Cores of Amoeboid Olivine Aggregates from Allende: Evidence of Overlapping Formation Times of AOAs and Chondrules
Fagan T. J. * Komatsu M. Nishijima E. Fukushima H. Yasuda T. 79th Annual Meeting of the Meteoritical Society (2016) #6292 LINK
