Th/U variability in Allende chondrules
نویسندگان
چکیده
منابع مشابه
SEARCH FOR Fe IN CHONDRULES FROM ALLENDE AND TIESCHITZ
Introduction: Chondrites are early objects composed of primitive undifferentiated material. The study of their earliest and most primitive components like the refractory inclusions (CAIs) and the chondrules provide us with strong constraints on the events in the early solar system. Chondrules are millimeter-sized spheres present in abundance in most chondrites. They are thought to have formed b...
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Introduction: There are several leading theories on the processes that led to the formation of chondrites, e.g., sorting by mass [1,2], by X-winds [3], turbulent concentration [4], and by photophoresis [5]. The juxtaposition of refractory inclusions (CAIs) and less refractory chondrules is central to these theories and there is much to be learned from their relative size distributions. There ha...
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Introduction: Void spaces in the components of chondritic meteorites have received little attention, perhaps due to ambiguities attendant upon their very existence, and also their origin. Computer-aided mi-crotomography allows the 3-dimensional imaging and analysis of void spaces within solid objects. Several striking examples of void spaces, apparently enclosed by solid material, resulted from...
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ALTERATION IN CHONDRULES FROM ALLENDE CV3 CHONDRITE I. Jabeen, M. Kusakabe, T. Nakamura and K. Nagao, Institute for Study of the Earth’s Interior, Okayama University, Japan, University of Toyama, Japan, Department of Earth and Planetary Science, Kyushu University, Japan, Laboratory for Earthquake Chemistry, University of Tokyo, Japan email: [email protected]; [email protected]; to...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 2020
ISSN: 0016-7037
DOI: 10.1016/j.gca.2020.04.006