Archive for February 20th, 2026

A Collective Trigger for Widespread Planetesimal Formation Revealed by Accretion AgesOPEN ACCESS

20/02/2026 21:50 · by karmaka · in carbonaceous chondrite, CI, CL, CO, CR, CTG, CV, early chronology, EH, EL, enstatite chondrite, H, IC, IIAB, IIIAB, IIIE, iron, IVA, L, LL, ordinary chondrite, parent body, parent body, planets/planetesimals, R chondrite, ungrouped

James Bryson, Hannah Sanderson, Francis Nimmo, Sanjana Sridhar, Gregory Brennecka, Yves Marrocchi, Jason Terry PDF (OPEN ACCESS) “The formation of planetesimals was an integral part of the cascading series of processes that built the terrestrial…

Redox reactions in the outermost thin surfaces of meteorite fusion crusts

20/02/2026 21:37 · by karmaka · in chondrite components, meteorite

Toshimori Sekine, Ginga Kitahara, Akira Yoshiasa, Akira Yamaguchi Geochimica et Cosmochimica Acta, In Press, Journal Pre-proof, Available online 20 February 2026 LINK “The fusion crusts of meteorites indicate the quenched high temperature layers, but few…