Isotopic composition of lithium in the Allende meteorite.
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منابع مشابه
Calcium Isotopic Anomalies in the Allende Meteorite
We report isotopic anomalies inCa which were found in two Ca-Al-rich inclusions of the Allende meteorite. These inclusions previously had been shown to contain special anomalies for Mg and 0 which were attributed to fractionation and unknown nuclear effects. The Ca data when corrected for mass fractionation by using 4°Ca; 44Ca as a standard show nonlinear isotopic ~ffects in 48Ca of + 13.5 per ...
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We report Sr isotope anomalies in two Ca·Al-rich inclusions (EKl-4-1 and Cl) of the Allende meteoritewhichalsocontainanomaliesin 0, Mg, Ca, Ba, Nd and Sm. The Sr effects correspond to 84 Sr or 88 Sr deficits of 3.2"too and 0.8%o or to 86 Sr excesses of 1.6%o and 0.4"too. Although it cannot be ascertained in which isotope the anomalies reside, arguments based on the 8 7 Sr abundance indicate tha...
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ALLENDE METEORITE. T. Kunihiro, S. Maruyama, M. Watanabe, and E. Nakamura, The Pheasant Memorial Laboratory, Institute for the Study of the Earth’s Interior, Okayama University, Japan ([email protected]) Introduction: Most carbonaceous and ordinary chondrites—long touted as primordial material and relatively unchanged since their formation—have been altered by interaction with aqueous ...
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Isotopic anomalies have been found for Ba and Nd in two inclusions from the Allende meteorite. These inclusions are typical Ca-Al-rich objects associated with early condensates from the solar nebula but have distinctive O and Mg isotopic anomalies of the FUN type. Sample Cl shows a depletion only in Ba of 2 parts in 10 and normal Nd. Sample EK1-4-1 shows large positive excesses in the unshielde...
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Walker1, J. N. Grossman2, L. Grossman3, G. J. MacPherson4, J. W. Morgan1, S. B. Simon3, 1-Department of Geology, University of Maryland, College Park MD 20742 (e-mail: [email protected]), 2-USGS, MS-923, Reston, VA 22094, 3-Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago IL 60637, 4-Department of Mineral Sciences, National Museum of Natural History...
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ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 1977
ISSN: 0016-7002
DOI: 10.2343/geochemj.11.41