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Importance of Flowage Differentiation in Magmatic Evolution: An Example from an Ophiolitic Sheeted Complex

J. Bébien and Cl. Gagny
The Journal of Geology
Vol. 87, No. 5 (Sep., 1979), pp. 579-582
Stable URL: http://www.jstor.org/stable/30070744
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Importance of Flowage Differentiation in Magmatic Evolution: An Example from an Ophiolitic Sheeted Complex
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Abstract

Axial concentrations of the first formed minerals, caused by an inward motion of crystals during flow (Bagnold effect), occur in the sheeted dykes of the Guevgueli ophiolitic complex (Greek Macedonia). The resulting chemical differentiation within individual dykes mimics that seen in random samples of the dyke complex as a whole and of the overlying lavas: the differentiation of these formations is due primarily to redistribution of crystals during flow.

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