Mathematics – Logic
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..341..317r&link_type=abstract
Chondrites and the Protoplanetary Disk, ASP Conference Series, Vol. 341, Proceedings of a workshop held 8-11 November 2004 in Ka
Mathematics
Logic
7
Scientific paper
Mineralogical, chemical, and isotopic constraints on the genetic relationship between refractory inclusions and chondrules suggest that the first chondrules and refractory inclusions formed ~4567 Ma ago, during multiple evaporation, condensation, and melting events. A plausible model is that refractory inclusions formed in close proximity to the proto-Sun at the inner edge of the accretion disk and were subsequently transported to 1-4 AU where chondrule formation and accretion of chondrite parent asteroids took place. The formation of CAIs occurred within 0.5 Myr, but the formation of chondrules lasted for several million years. Most chondrules formed by melting of silicates, Fe,Ni-metal, and refractory inclusions mixed in various proportions. Some refractory inclusions were remelted in the chondrule-forming regions with or without addition of chondrule material, whereas others show no evidence for being affected by chondrule-forming events, suggesting that CAI and chondrule formation were localized phenomena.
Huss Gary R.
Itoh Sachihiko
Keil Klaus
Krot Alexander N.
MacPherson Glenn J.
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