Department of Geology and Mineralogy, Faculty of Science, Kyoto University
Department of Geology and Mineralogy, Faculty of Science, Kyoto University
Department of Geology and Mineralogy, Faculty of Science, Kyoto University
抄録(英)
A new type of chondrules in the Allende meteorite is rich in volatile elements and shows porphyritic textures similar to terrestrial basalts. This unique type is termed Type V to supplement H. Y. McSWEEN'S (Geochim. Cosmochim. Acta, 41,1843,1977) classification of chondrules in carbonaceous chondrites. The Type V chondrules form a continuous trend with the Type I and II chondrules in the (Na+K)-(Al)-(Si) and (Na+K)-(Al+Ca)-(Mg+Fe) ternary systems. Type IV is plotted between Type V and CAI's. These compositional features of the different types of chondrules suggest that Type V was resulted from a fractionation process in the precusor materials of the Allende meteorite.
雑誌書誌ID
AA00733561
雑誌名
Memoirs of National Institute of Polar Research. Special issue
Volatile-rich chondrules in the Allende meteorite
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KJ00000012524.pdf
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概要
