Browsing by Author "Ulyanov A.A."
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Browsing by Author "Ulyanov A.A."
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McKeegan K.D.; Taylor D.J.; Krot A.N.; Sahijpal S.; Ulyanov A.A. (2004)Estimates of the initial “canonical” (~5 10 -5) value of 26Al/27Al in the solar nebula are based primarily on ion microprobe analyses of high Al/Mg phases in CAIs. Some of these minerals (e.g., plagioclase, melilite) are ...
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Krot A.N.; MacPherson G.J.; Ulyanov A.A.; Petaev M.I. (2004)Fine-grained, spinel-rich inclusions in the reduced CV chondrites Efremovka and Leoville consist of spinel, melilite, anorthite, Al-diopside, and minor hibonite and perovskite; forsterite is very rare. Several CAIs are ...
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Goswami J.N.; Srinivasan G.; Ulyanov A.A. (1994)Five coarse-grained Ca-Al-rich refractory inclusions (CAIs) from the Efremovka CV3 chondrite are analysed for their magnesium isotopic composition using an ion microprobe. The analysed inclusions represent the three common ...
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Srinivasan G.; Sahijpal S.; Goswami J.N.; Ulyanov A.A. (1996)The potassium isotope composition of refractory phases in Efremovka CAIs has been measured by an ion microprobe. Extensive studies of terrestrial standards were carried out to ensure that the experimental procedures adopted ...
Now showing items 1-4 of 4