Graded bedding
From Wikipedia, the free encyclopedia
In geology, a graded bed is one characterized by coarse sediments at its base, which grade upward into progressively finer ones. They are perhaps best represented in turbidite strata, where they indicate a sudden strong current that deposits heavy, coarse sediments first, with finer ones following as the current weakens. They can also form in terrestrial stream deposits.
[edit] Reference
- Monroe, James S., and Reed Wicander. The Changing Earth: Exploring Geology and Evolution, 2nd ed. Belmont: West Publishing Company, 1997. ISBN 0-314-09577-2 pp. 114.
