isochemical metamorphism

isochemical metamorphism

[¦ī·sō′kem·ə·kəl ‚med·ə′mȯr·fiz·əm]
(petrology)
Theoretically, a metamorphism involving no great change in its chemical composition. Also known as treptomorphism.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.