Hutchison, R.; Bridges, J.C. and Gilmour, J.D.
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Major element contents of chondrite groups were volatility controlled and established in a nebula after formation of Ca-Al-rich inclusions but before chondrules formed. Elemental abundances in chondrules tend to correlate with chemical affinity. Calcium was fractionated from Al by a planetary, not a nebular process. Chondrules were contemporaneous with igneous activity and aqueous and thermal metamorphism. Planetary bodies of varied size and structure co-existed during the first 50-80 million years of the Solar System, when chondrules formed and impact was common. We propose that most chondrules formed by impacts on differentiated bodies.
|Item Type:||Journal Article|
|Copyright Holders:||2005 by Astronomical Society of the Pacific|
|Extra Information:||Part of the Proceedings of a workshop held 8-11 November 2004 in Kaua'i, Hawai'i
Chondrites and the Protoplanetary Disk
edited by Alexander N. Krot, Edward R. D. Scott, Bo Reipurth
|Keywords:||chrondite; nebula; igneous activity|
|Academic Unit/Department:||Science > Physical Sciences|
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Users 12 not found.|
|Date Deposited:||21 Nov 2006|
|Last Modified:||05 Jul 2014 23:56|
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