true crater

true crater

[′trü ′krād·ər]
(geology)
The primary depression formed by impact or explosion before modification by slumping or by deposition of ejected material. Also known as primary crater.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Mentioned in ?
References in periodicals archive ?
Although not greatly depressed, it is sufficiently so to present under this illumination and visual angle the true crater form'.