Time Scales of Crystal Fractionation in Magma Chambers—Integrating Physical, Isotopic and Geochemical Perspectives

A simple heat balance model for an evolving magma chamber is used to make predictions of the time scales for magma differentiation, which are compared with geological and isotopic constraints on the rates of crystallization and differentiation. In a 10 km3 magma chamber releasing thermal energy at a...

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Bibliographic Details
Published in:Journal of petrology 2000-07, Vol.41 (7), p.991-1006
Main Authors: HAWKESWORTH, C. J., BLAKE, S., EVANS, P., HUGHES, R., MACDONALD, R., THOMAS, L. E., TURNER, S. P., ZELLMER, G.
Format: Article
Language:English
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Summary:A simple heat balance model for an evolving magma chamber is used to make predictions of the time scales for magma differentiation, which are compared with geological and isotopic constraints on the rates of crystallization and differentiation. In a 10 km3 magma chamber releasing thermal energy at a rate of 100 MW, basalt and rhyolite magmas should reach 50% crystallization after ~2500 and
ISSN:0022-3530
1460-2415
DOI:10.1093/petrology/41.7.991