rectangular cross ripple mark
rectangular cross ripple mark
[rek′taŋ·gyə·lər ¦krȯs ′rip·əl ‚märk] (geology)
An oscillation cross ripple mark consisting of two sets of ripples which intersect at right angles, enclosing a rectangular pit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.