Quantitative Phase Analysis of Martian Meteorite Alteration
نویسندگان
چکیده
منابع مشابه
Carbonates 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...
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Introduction: The origin of secondary carbonate minerals in the oldest known martian meteorite ALH84001 have been intensely debated in the literature, with widely different thermal origins considered: ranging from hydrothermal alteration (possibly impactinduced) [e.g. 1, 2, 3] to low temperature alteration conditions [e.g. 4, 5, 6]. Recent isotopic evidence suggests the carbonates precipitated ...
متن کاملPutative indigenous carbon-bearing alteration features in martian meteorite Yamato 000593.
We report the first observation of indigenous carbonaceous matter in the martian meteorite Yamato 000593. The carbonaceous phases are heterogeneously distributed within secondary iddingsite alteration veins and present in a range of morphologies including areas composed of carbon-rich spheroidal assemblages encased in multiple layers of iddingsite. We also observed microtubular features emanati...
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Introduction: Martian space probe, Viking landers could not measure Ne isotopic ratios, but only had the concentration of Ne as 2.5 ppm (error +3.5, -1.5) in Martian atmosphere [1]. After that, there have been many efforts to determine Ne isotopic composition of Martian atmosphere, by examining the Martian atmospheric gases trapped in impact glasses of the EET 79001 and other shergottites [2-6]...
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1Planetary Geosciences Institute, Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA 2Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin St. 19, Moscow 117975, Russia 3Institute of Meteoritics, University of New Mexico, Albuquerque, New Mexico 87131, USA 4Department of Civil Engineering and Geological ...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2010
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927610063142