The west coast of South America is known for its seasonal upwelling. What kind of sediment is likely
to be abundant based on this information?
a. Terrigenous
b. Hydrogenous
c. Biogenous
d. Cosmogenous
ANS: C
Biogenous sediments are abundant in areas with nutrients to encourage productivity. These areas are
usually near continental margins and concentrated where there is upwelling. Information can be found
in the section Sediments May be Classified by Source.
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