banded differentiate

banded differentiate

[′ban·dəd ‚dif·ə′ren·chē‚āt]
(petrology)
A type of igneous rock made up of bands of different composition, frequently alternating between two varieties as in a layered intrusion.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.