Cosmogenic Neon from Individual Olivine Grains of Chondrules and Chondrites
نویسندگان
چکیده
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, India.
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Cosmogenic neon in grains separated from individual chondrules: Evidence of precompaction exposure in chondrules
Neon was measured in 39 individual olivine (or olivine-rich) grains separated from individual chondrules from Dhajala, Bjurböle, Chainpur, Murchison, and Parsa chondrites with spallation-produced Ne the result of interaction of energetic particle irradiation. The apparent Ne cosmic ray exposure (CRE) ages of most grains are similar to those of the matrix with the exception of three grains from ...
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