contact metasomatism

contact metasomatism

[′kän‚takt ‚med·ə′sō·mə‚tiz·əm]
(geology)
One of the main local processes of thermal metamorphism that is related to intrusion of magmas; takes place in rocks or near their contact with a body of igneous rock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.