Fractionation of radiogenic Pb isotopes in meteorites and their components induced by acid leaching
Yuri Amelin, Qing-Zhu Yin, Piers Koefoed, Renaud Merle, Yuki Hibiya, Magdalena H. Huyskens, Tsuyoshi Iizuka, Julia A. Cartwright Geochimica et Cosmochimica ActaAvailable online 10 November 2024 LINK “In this study we test the possibility that…
Igneous intrusion origin for the petrofabric of Erg Chech 002OPEN ACCESS
C. Beros, K. T. Tait, V. E. Di Cecco, D. E. Moser MAPS, Version of Record online: 19 May 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Achondrites provide an opportunity to examine the igneous processes of…
A 4,565-My-old record of the solar nebula field
Clara Maurel and Jérôme Gattacceca PNAS, March 4, 2024 121 (12) LINK “ABSTRACT: Magnetic fields in protoplanetary disks are thought to play a prominent role in the formation of planetary bodies. Acting upon turbulence and…
Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar NebulaOPEN ACCESS
Evgenii Krestianinov, Yuri Amelin, Qing-Zhu Yin, Paige Cary, Magdalena H. Huyskens, Audrey Miller, Supratim Dey, Yuki Hibiya, Haolan Tang, Edward D. Young, Andreas Pack & Tommaso Di Rocco Nature Communications, Volume 14, Article number: 4940…
Evidence for Very Early Planetesimal Formation and 26Al/27Al Heterogeneity in the Protoplanetary DiskOPEN ACCESS
J. N. Connelly, J. Bollard, E. Amsellem, M. Schiller, K. K. Larsen, and M. Bizzarro The Astrophysical Journal Letters, Volume 952, Number 2 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “We present a U-corrected Pb–Pb age of…
Thermal history of the Erg Chech 002 parent body: Early accretion and early differentiation of a small asteroidOPEN ACCESS
Wladimir Neumann, Robert Luther, Mario Trieloff, Philip M. Reger, Audrey Bouvier Draft version: 27 February 2023 PDF (OPEN ACCESS) “The history of accretion and differentiation processes in the planetesimals is provided by various groups of…
Experimental Study of Ungrouped Achondrite Erg Chech 002
Balemian-Spencer M. F.* Krawczynski M. J. Carpenter P. K. Ogliore R. C. 54th Lunar and Planetary Science Conference 2023abstract [#2574] Erg Chech is ancient / Its chemistry is funky / Let’s talk about it.
K-Ca dating and Ca isotope composition of the oldest Solar System lava, Erg Chech 002OPEN ACCESS
W. Dai, F. Moynier, L. Fang, J. Siebert Geochemical Perspectives Letters v24 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Erg Chech 002 (EC 002) is an andesitic meteorite, which is the oldest lava in the Solar System…
Gaia search for early-formed andesitic asteroidal crustsOPEN ACCESS
Marjorie Galinier, Marco Delbo, Chrysa Avdellidou, Laurent Galluccio, Yves Marrocchi Astronomy & Astrophysics manuscript (January 3, 2023) PDF (OPEN ACCESS) “Context. Andesitic meteorites are among the oldest achondrites known to date. They record volcanic events…
Al-Mg and U-Pb chronological records of Erg Chech 002 ungrouped achondrite meteorite
Philip M. Reger, Yvonne Roebbert, Wladimir Neumann, Abdelmouhcine Gannoun, Marcel Regelous, Winfried H. Schwarz, Thomas Ludwig, Mario Trieloff, Stefan Weyer, Audrey Bouvier Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 23 December 2022 LINK…
53Mn-53Cr chronology and ε54Cr-Δ17O genealogy of Erg Chech 002: the oldest andesite in the Solar SystemOPEN ACCESS
Aryavart Anand, Pascal M. Kruttasch, Klaus Mezger Accepted in ‘Meteoritics & Planetary Science’ journal PDF (OPEN ACCESS) Update (23 October 2022): MAPS LINK “The meteorite sample Erg Chech (EC) 002 is the oldest felsic igneous…
Early silicic magmatism on a differentiated asteroid
Robert W. Nicklas, James M. D. Day, Kathryn G. Gardner-Vandy & Arya Udry Nature GeosciencePublished: 04 August 2022 LINK “Unlike the other terrestrial planets, Earth has a substantial silica-rich continental crust with a bulk andesitic…
Paleomagnetic Investigation of the Oldest-Known Andesite Erg Chech 002
Maurel C. Gattacceca J. Barrat J.-A. MetSoc22 abstract [#6053] LINK “We present the first paleomagnetic study of the oldest-known andesitic meteorite Erg Chech 002. The meteorite holds a stable magnetic record, which may be attributed…
Structure of differentiated planetesimals: A chondritic fridge on top of a magma ocean
Cyril Sturtz, Angela Limare, Marc Chaussidon, Édouard Kaminski IcarusIn Press, Journal Pre-proof, Available online 28 May 2022 LINK “Highlights • We study the formation and the thermal evolution of planetesimals that accreted undifferentiated material during…
Half-life and initial Solar System abundance of 146Sm determined from the oldest andesitic meteoriteOPEN ACCESS
Linru Fang, Paul Frossard, Maud Boyet, Audrey Bouvier, Jean-Alix Barrat, Marc Chaussidon, and Frederic Moynier PNASMarch 15, 2022 | 119 (12) LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The formation and differentiation of planetary bodies are dated…
Noble Gas Chronology of Erg Chech 002 Ungrouped Achondrite
Takenouchi A., Sumino H., Yamaguchi A., Barrat J. A. 84th Annual Meeting of The Meteoritical Society 2021 (abstract # 6162) PDF We conducted Ar-Ar analyses of recently found andesitic achondrite Erg Chech 002. The Ar-Ar…
Petrography of Fine-Grained Domains in Ungrouped Achondrite Erg Chech 002: Evidence for Different Cooling Histories?
Hamann C., Collinet M., Schwinger S., Kaufmann F. E. D., Bonato E., Greshake A., Maturilli A., Helbert J., Hecht L. 84th Annual Meeting of The Meteoritical Society 2021 (abstract # 6236) PDF Here we describe…
A 4,565-My-old andesite from an extinct chondritic protoplanetOPEN ACCESS
Jean-Alix Barrat, Marc Chaussidon, Akira Yamaguchi, Pierre Beck, Johan Villeneuve, David J. Byrne, Michael W. Broadley, and Bernard Marty PNAS March 16, 2021 118 (11) LINK Update (6 May 2021): PDF (OPEN ACCESS) “The age…
Mineralogy and Bulk Elemental Composition of Ungrouped Relatively Sodic Gabbroic Achondrite Erg Chech 002: An Ancient Planetary Crustal Sample?
P. K. Carpenter, Irving A. J., Righter M., Lapen T. J., Tepper J. H. 52nd Lunar and Planetary Science Conference (2021), Abstract #2205 PDF “A unique mafic gabbroic achondrite characterized by sodic plagioclase may represent…
Petrology and Geochemistry of Erg Chech 002, the Oldest Andesite in the Solar System
A. Yamaguchi, Barrat J. A., Chaussidon M., Beck P., Villeneuvee J. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #1892 PDF “We present the petrology and geochemistry of Erg Chech 002, and discuss…
Mineralogy and Cooling History of Ungrouped Achondrite Erg Chech 002
T. Mikouchi, Zolensky M. E. 52nd Lunar and Planetary Science Conference (2021), Abstract #2457 PDF “Erg Chech 002 is characterized by large pyroxene xenocrysts whose diffusive zoning profiles suggest fast cooling from high temperature. Trapping…
Multi-Stage Differentiation History of Andesitic Achondrite Erg Chech 002
R. W. Nicklas, Day J. M. D., Gardner-Vandy K. G., Udry A. 52nd Lunar and Planetary Science Conference (2021), Abstract #1074 PDF “Erg Chech 002 is a new evolved achondrite dominated by pyroxene, plagioclase, and…
26Al Chronology of Erg Chech 002, the Oldest Andesite in the Solar System
M. Chaussidon, Barrat J. A., Yamaguchi A., Beck P., Villeneuve J. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2222 PDF “26Al chronology shows that the Erg Chech 002 meteorite of andesitic composition…
