The origin of chondrules and chondrites, by Derek Sears
نویسندگان
چکیده
منابع مشابه
Lithium Isotopic Analyses of Chondrites and Chondrules
Introduction: Light stable isotopes provide insights and constraints on nebular and parent body processes. Lithium isotope studies of chondrites offer such potential, with some specifically unique aspects. Lithium is monovalent, the lightest of nongaseous elements, it has a 15% mass difference between its 2 isotopes (Li and Li), it is fluid mobile, and it is one of the fastest diffusing element...
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GRAINS OF CHONDRULES AND CHONDRITES. J. P. Das, K. Kehm, J. N. Goswami, O. V. Pravdivtseva, A. P. Meshik and C. M. Hohenberg. Department of Physics, Campus Box 1105, Washington University, 1 Brookings Drive, Saint Louis, MO 63130, USA., [email protected] 2 Physics Department, Washington College, 300 Washington Ave., Chestertown, MA 21619, USA. Physical Research Laboratory, Ahmedabad-380009...
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Introduction: The metal-rich CH and CB chondrites are among the most primitive (unmetamorphosed, unaltered), but controversial meteorites: both nebular and asteroidal models have been proposed to explain the origins of their components [1-14]. In addition to porphyritic chondrules and rare refractory inclusions, the CHs contain a high abunbance (~20 vol%) of metal and dominant cryptocrystalline...
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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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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2005
ISSN: 1086-9379,1945-5100
DOI: 10.1111/j.1945-5100.2005.tb00970.x