MAGNESIUM ISOTOPIC COMPOSITION OF CAIs AND CHONDRULES FROM CBb CHONDRITES
نویسندگان
چکیده
M. Gounelle, E. D. Young, A. Shahar and A. Kearsley, Laboratoire d’Étude de la Matière Extraterrestre, Muséum National d’Histoire Naturelle, 57 rue Cuvier, CP52, 75005 Paris, France. Impacts & Astromaterials Research Centre, Department of Mineralogy, The Natural History Museum, London SW7 5BD, UK. ([email protected]). Institute of Geophysics and Planetary Physics, UCLA. Department of Earth and Space Sciences, University of California Los Angeles, Los Angeles, CA 90095, USA.
منابع مشابه
Magnesium isotopic constraints on the origin of CBb chondrites
The magnesium isotopic composition of Calcium-, Aluminium-rich Inclusions (CAIs) and chondrules from the CBb chondrites HH237 and QUE94411 was measured using MC-ICPMS coupled with a laser ablation system. CAIs from CBb chondrites exhibit limited mass-dependent fractionation (δ Mg′ (DSM3) b1.3‰) and formed with undetectable Al (Al/Al b4.6×10). Petrographic observations suggest that CBb CAIs are ...
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