Mineralogy, petrology, and oxygen isotopic composition of Northwest Africa 12379, metal-rich chondrite with affinity to ordinary chondrites
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چکیده
منابع مشابه
Oxygen isotopes in R-chondrite magnetite and olivine: Links between R chondrites and ordinary chondrites
Ion-microprobe studies yield DO (5dO 2 0.52 z dO) values in magnetite from the Rumurti chondrite (RC) PCA91241 (which is paired with PCA91002) of 13.1 to 13.9‰, slightly higher than that in O from whole-rock R samples. Despite DO values in whole-rock RCs that are much (by ca. 1.6‰) higher than in whole-rock LL chondrites, the DO in R magnetite is much lower (by ca. 2‰) than the values (14 to 17...
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Al-rich chondrules (ARCs) are a rare constituent of chondrites. They have relatively high bulk Al20 3 content(> 10 wt%), which is due to the presence of Al-rich phases, such as plagioclase, spinel, Al-rich glass etc. [1]. ARCs share some chemical and petrologic characteristics with Ca, Al-rich inclusions (CAis), and may represent a genetic link between ferromagnesian chondrules and CAis. Twelve...
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A geochemically and mineralogically diverse group neous aspect can form as products of different proof granitoids is present within an area of 900 km2 in the cesses . . . " Within an area of 900 km2 in the southern Snake southern Snake Range of eastern Nevada. The granitoids Range, White Pine County, Nevada, six igneous masses exposed range in age from Jurassic through Cretaceous to are well ex...
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ORDINARY CHONDRITES FROM COMPOSITIONAL AND OXYGEN ISOTOPIC TRENDS IN AN EXOTIC FRAGMENT. K.A. Dyl, A. Bischoff, K. Ziegler, K. Wimmer, E.D. Young, Department of Earth and Space Sciences, UCLA, Los Angeles, CA 90095 ([email protected]), Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany, Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, CA 90095, Suedendstr. 1, ...
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ژورنال
عنوان ژورنال: Geochemistry
سال: 2019
ISSN: 0009-2819
DOI: 10.1016/j.chemer.2019.125537