migmatization Petrol.
(mɪgmətaɪˈzeɪʃən)
[f. migmatite + -ization.]
The process by which a migmatite is formed.
| 1932 E. G. Woods Baltic Region vii. 67 A great deal of migmatization having taken place has masked very effectively the relationship of these rocks to one another. 1958 Geol. Mag. XCV. 383 The infrastructure, although undergoing migmatization, retains the trends of the older orogenic belt from which it is largely formed. 1971 Scottish Jrnl. Geol. VII. 323 The frequent spatial coincidence between areas of migmatization and centres of high-grade regional metamorphism has long been recognized. |
Hence ˈmigmatized ppl. a., converted into a migmatite.
| 1958 Geol. Mag. XCV. 383 During the Caledonian orogeny, both the old crystalline rocks and a low structural level of the Caledonian geosynclinal rocks themselves became migmatized and rose as diapirs. 1971 Scottish Jrnl. Geol. VII. 305 In central and eastern Sutherland the Moine rocks are extensively migmatized. |