biofacies

biofacies

[′bī·ō‚fā·shēz]
(geology)
A rock unit differing in biologic aspect from laterally equivalent biotic groups.
Lateral variation in the biologic aspect of a stratigraphic unit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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