Martian meteorite Tissint records unique petrogenesis among the depleted shergottites
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چکیده
منابع مشابه
Unusual Interaction between Martian Surface and Magmatic Reservoirs: Volatiles in Impact Melts in the Tissint Meteorite
VOLATILES IN IMPACT MELTS IN THE TISSINT METEORITE. Yang Chen, Yang Liu, Yunbin Guan, John M. Eiler, Chi Ma, George R. Rossman, and Lawrence A. Taylor. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Geol. & Planet. Sci., California Institute of Technology, Pasadena, CA 91125, USA; Planet. Geosci. Inst., Dept. of Earth & Planet. Sci., Univ. of Tenn., Knox...
متن کاملTHE AGE OF TISSINT: Sm-Nd & Rb-Sr ISOTOPE SYSTEMATICS OF A MARTIAN METEORITE FALL
Introduction: The recently acquired meteorite Tissint is the first recognized fall of a depleted shergottite. Other such shergottites were found in the hot deserts (e.g., NWA 1195, Dhofar 019, DAG 476) or in the Antarctic cold desert (e.g., QUE 94201, Y980459) and, in many cases, have disturbed isotopic systematics due to terrestrial contamination [1-4]. Tissint represents the freshest sample o...
متن کاملPetrogenesis of lunar meteorite EET 96008
Lunar meteorite EET 96008 is a fragmental breccia that predominantly consists of basaltic mineral clasts (0.5–2 mm), along with minor lithic fragments and breccia clasts. The matrix consists mainly of smaller mineral fragments ( 0.5 mm), bound by glassy cement, the majority of which are pyroxene and plagioclase. The pyroxene possesses extensive exsolution lamellae. These lamellae, up to 1 m in ...
متن کاملCarbonates in the Martian meteorite
Despite evidence for liquid water at the surface of Mars during the Noachian epoch, the temperature of early aqueous environments has been impossible to establish, raising questions of whether the surface of Mars was ever warmer than today. We address this problem by determining the precipitation temperature of secondary carbonate minerals preserved in the oldest known sample of Mars’ crust—the...
متن کاملMineral chemistry of the Tissint meteorite: Indications of two-stage crystallization in a closed system
The Tissint meteorite is a geochemically depleted, olivine-phyric shergottite. Olivine megacrysts contain 300–600 lm cores with uniform Mg# (~80 1) followed by concentric zones of Fe-enrichment toward the rims. We applied a number of tests to distinguish the relationship of these megacrysts to the host rock. Major and trace element compositions of the Mg-rich core in olivine are in equilibrium ...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2016
ISSN: 1086-9379
DOI: 10.1111/maps.12684