Volume 11, Issue 1 (4-2003)                   www.ijcm.ir 2003, 11(1): 65-81 | Back to browse issues page

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Crystal size distribution in metamorphic rocks: an example for the relationship between nucleation and growth rates with overstepping. www.ijcm.ir. 2003; 11 (1) :65-81
URL: http://ijcm.ir/article-1-777-en.html
Abstract:   (2232 Views)

Crystal size distribution (CSD) in metamorphic rocks provide fundamental information about crystal nucleation and growth rate, growth time and the degree of overstepping. CSD data for garnet, staurolite, kyanite and andalusite crystals from the aureole demonstrate that the earliest formed of these minerals, garnet, has the highest population density and the shortest growth time. The last formed mineral, andalusite, has the lowest population density and longest growth time. Kyanite  and  staurolite  have  the  similar  population  density  and  growth  times  intermediate  between those of garnet and andalusite. These data demonstrate the effect of the degree of overstepping on the nucleation and growth rates of minerals during metamorphism.

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