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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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ggull329 ggull329
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6 years ago

What kinds of Paleogene and Neogene deposits are found in North Americas continental
  interior? What was the source of these sediments? What will be an ideal response?
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wrote...
#1
6 years ago

Sediments were deposited in marine and transitional environments. The only local sediment
source within the Great Plains was the Black Hills in South Dakota. Marine deposition occurred
in this area during the Cretaceous, followed by the origin of terrestrial deposits. Terrestrial
deposits indicate semitropical forests, giving way to grasslands. There are also incidents of
igneous activity.
ggull329 Author
wrote...
#2
6 years ago
TY
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