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Role of plagioclase crystal chains in the differentiation of partly crystallized basaltic magma

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  • Anthony R. Philpotts

    (University of Connecticut)

  • Jianyang Shi

    (University of Connecticut)

  • Caroline Brustman

    (University of Connecticut)

Abstract

Melting experiments on samples of basaltic rock from a thick lava flow reveal that when this lava originally began to crystallize, feldspar crystals linked together to form a continuous three-dimensional network of chains when the lava was no more than 25% crystallized. Formation of this network has profound implications for the behaviour and differentiation of basaltic magma. Much of the compositional variation of igneous rocks results from the separation of liquid from crystals, a process that is dramatically affected according to whether crystals occur separately or are linked together in networks.

Suggested Citation

  • Anthony R. Philpotts & Jianyang Shi & Caroline Brustman, 1998. "Role of plagioclase crystal chains in the differentiation of partly crystallized basaltic magma," Nature, Nature, vol. 395(6700), pages 343-346, September.
    • Handle: RePEc:nat:nature:v:395:y:1998:i:6700:d:10.1038_26404
    DOI: 10.1038/26404
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