The Geology of the Great 'Dyke', Zimbabwe: The Ultramafic Rocks
- 1 May 1982
- journal article
- Published by Oxford University Press (OUP) in Journal of Petrology
- Vol. 23 (2) , 240-292
- https://doi.org/10.1093/petrology/23.2.240
Abstract
Textural and mineral chemistry data for the ultramafic sequence of the Hartley Complex are presented with the object of evaluating emplacement mechanisms, crystallization history and sub-solidus re-equilibration processes for the Great ‘Dyke’. Mineral chemistry indicates in situ crystallizaration for the ultramafic sequence, whereas textural evidence suggests that limited crystal settling of chromite took place. It is concluded that crystallization of cumulus phases occurred at or near the floor of the magma chamber.Keywords
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