Geology: A Self-Teaching Guide by Barbara W Murck
Author:Barbara W Murck [Murck, Barbara W]
Language: eng
Format: epub
Tags: Educational, Geology, Non-Fiction
ISBN: 9780471385905
Amazon: 0471385905
Publisher: Wiley
Published: 2001-06-28T23:00:00+00:00
Page 164
Referring to the discussion about graded bedding in section 2 ("Clastic Sediment"), can you deduce why turbidites display graded bedding?
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* * *
* * *
Answer: When turbidity currents rush downslope off the continental shelf, they are well-mixed slurries with a wide range of clast sizes. When they reach the bottom they lose velocity (and energy) very quickly, and drop their load. The coarsest grains settle first; the finest particles remain in suspension, eventually settling out on top. The result is a graded bed.
Now take the Self-Test to check your understanding and memory of the concepts and terms presented in this chapter.
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