Unique igneous textures and shock metamorphism of the Northwest Africa 7203 angrite: Implications for crystallization processes and the evolutionary history of the angrite parent body

Unique igneous textures and shock metamorphism of the Northwest Africa 7203 angrite: Implications for crystallization processes and the evolutionary history of the angrite parent body

Northwest Africa (NWA) 7203 is a quenched angrite, showing mineralogical features typically not present in other quenched angrites. NWA 7203 exhibits textures whose grain size varies from fine grains (10 km in diameter) during the late heavy bombardment.

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Veröffentlicht in:Meteoritics & planetary science 2022-01, Vol.57 (1), p.105-121
Hauptverfasser: Hayashi, Hideyuki, Mikouchi, Takashi, Kim, Nak Kyu, Park, Changkun, Sano, Yuji, Takenouchi, Atsushi, Yamaguchi, Akira, Kagi, Hiroyuki, Bizzarro, Martin, Goodrich, Cryena
Format: Artikel
Sprache:eng
Schlagworte:
Asteroids
Cooling
Cooling rate
Crystallization
Fractionation
Grain size
Isotope ratios
Isotopes
Metamorphism
Olivine
Oxygen
Quenching
Shock metamorphism
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Beschreibung
Zusammenfassung:Northwest Africa (NWA) 7203 is a quenched angrite, showing mineralogical features typically not present in other quenched angrites. NWA 7203 exhibits textures whose grain size varies from fine grains (10 km in diameter) during the late heavy bombardment.
ISSN:1086-9379
1945-5100
DOI:10.1111/maps.13776