plain of denudation

plain of denudation

[′plān əv ‚dē·nü′dā·shən]
(geology)
A surface that has been reduced to sea level or to just above sea level by the agents of erosion (usually considered to be of subaerial origin).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.