allochemical metamorphism

allochemical metamorphism

[‚a·lō′kem·ə·kəl ‚med·ə′mȯr‚fiz·əm]
(petrology)
Metamorphism accompanied by addition or removal of material so that the bulk chemical composition of the rock is changed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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