A change in the angle of subduction on the west coast of North America during Cretaceous resulted in
A) subduction of the Franciscan complex and associated igneous activity.
B) igneous activity in Nevada and Idaho.
C) Sierra Nevada volcanism.
D) decreased rates of westward movement of the North American plate.
Correct Answer:
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Q18: Late Cretaceous was a time of _
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Q24: A typical Upper Cretaceous sequence of formations
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Q28: Early Cretaceous rudist reefs existed
A) along the
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