Impact melting of lunar meteorite Dhofar 458: Evidence from polycrystalline texture and decomposition of zircon
نویسندگان
چکیده
منابع مشابه
Lunar Meteorite Dhofar 026: a Second-generation Impact Melt
Introduction: The meteorite Dhofar 026 (Dh26) was found in Oman in January, 2000 [1]. It is a clastpoor, anorthositic, crystalline melt breccia with no fusion crust and little terrestrial weathering. Solar wind abundance measurements show that it is unpaired with the lunar regolith breccia Dhofar 025 [2]. The Dh26 oxygen isotopic composition indicates its lunar origin [3], while its majorand tr...
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Introduction: Lunar meteorite Dhofar 026 was previously interpreted as an impact melt [1, 2]. Detailed studies of the rock and comparison to Apollo lunar samples 15418 and 60017 indicate that the rock instead is a shocked, partly melted, granulitic breccia. These studies, presented by [3], are summarized herein. Petrology of Dhofar 026: Most of the rock consists of blocky patches of monomineral...
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Introduction: Lunar meteorite Dhofar 961, a complex, lithic-clast-rich impact breccia [1,2], was called out by [3-6] as a candidate for an origin in the South Pole – Aitken (SPA) Basin region of the Moon (the SPA Terrane) on the basis of its relatively mafic, but nonmare lithologic and major-element chemical composition. It also has an incompatible-element signature that differs from the KREEP-...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2011
ISSN: 1086-9379
DOI: 10.1111/j.1945-5100.2010.01144.x