Petrography and composition of Martian regolith breccia meteorite Northwest Africa 7475
نویسندگان
چکیده
منابع مشابه
Petrography and Mineralogy of Dhofar 1428 Lunar Highland Regolith Breccia
Introduction: Dhofar 1428 is a lunar feldspathic breccia found in 2006. Bunch et al. [1] briefly described mineral chemistry of Dhofar 1428. Korotev and Zeigler [2] analyzed its bulk FeO and Sm compositions. Here, we report such detailed data for Dhofar 1428. Results and Discussion: Dhofar 1428 has a distinct breccia texture with numerous fragments of rock, mineral, and glass all welded by a gl...
متن کاملEvidence for a widespread basaltic breccia component in the martian low-albedo regions from the reflectance spectrum of Northwest Africa 7034
Northwest Africa (NWA) 7034 is the first breccia meteorite from Mars, and unlike the shergottite, nakhlite, and chassignite (SNC) martian meteorites, it matches the estimated chemical composition of martian crust. Here we show that the visible-infrared reflectance spectrum of NWA 7034 is unique compared to other SNCs and is more similar than them to remotely sensed data from Mars, suggesting th...
متن کاملUnique meteorite from early Amazonian Mars: water-rich basaltic breccia Northwest Africa 7034.
We report data on the martian meteorite Northwest Africa (NWA) 7034, which shares some petrologic and geochemical characteristics with known martian meteorites of the SNC (i.e., shergottite, nakhlite, and chassignite) group, but also has some unique characteristics that would exclude it from that group. NWA 7034 is a geochemically enriched crustal rock compositionally similar to basalts and ave...
متن کاملRadar-enabled recovery of the Sutter's Mill meteorite, a carbonaceous chondrite regolith breccia.
Doppler weather radar imaging enabled the rapid recovery of the Sutter's Mill meteorite after a rare 4-kiloton of TNT-equivalent asteroid impact over the foothills of the Sierra Nevada in northern California. The recovered meteorites survived a record high-speed entry of 28.6 kilometers per second from an orbit close to that of Jupiter-family comets (Tisserand's parameter = 2.8 ± 0.3). Sutter's...
متن کاملEXPOSURE HISTORY OF LUNAR METEORITE NORTHWEST AFRICA 5000. K. Nishiizumi,
Caffee, N. Vogel, R. Wieler, M. D. Leclerc, and A. J. T. Jull, Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA ([email protected]), Department of Physics, Purdue University, West Lafayette, IN 47907-1396, USA ([email protected]), ETH-Zürich, CH-8092, Switzerland ([email protected], [email protected]), NSF Arizona AMS Facility, University of Arizona, Tuc...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2015
ISSN: 1086-9379
DOI: 10.1111/maps.12425