Which of the following statements best characterizes the geology of the Pacific coastal regions of western North America up into Alaska?

A) Divergent rifting creating deep, wide valleys with grabens
B) Collision of a massive subcontinent of old igneous and metamorphic rocks, resulting in fold-and-thrust mountains that are still growing
C) Geologically distinct, microcontinent-sized fragments and terraces accreted to the continent
D) Metamorphosed accretionary wedges


Ans: C) Geologically distinct, microcontinent-sized fragments and terraces accreted to the continent

Environmental & Atmospheric Sciences

You might also like to view...

Bowhead whales are members of which of the following orders?

A) Carnivora B) Cetacea C) Chiroptera D) Rhenanida E) Sirenia

Environmental & Atmospheric Sciences

Why is glacial ice analogous to a metamorphic rock?

A) It has a definite chemical composition. B) It has a crystalline structure. C) It forms as a result of recrystallization caused by pressure. D) It is solid.

Environmental & Atmospheric Sciences

The wet season of the tropical monsoon climate of SE Asia occurs during the season of ________ Sun due to the presence of the ________ over the continent. (low Sun = "winter" and high Sun = "summer")

A) low; ITCZ B) low; subtropical high C) low; Hadley cells D) high; subtropical high E) high; ITCZ

Environmental & Atmospheric Sciences

Explain the differences between the magnitude and the intensity of an earthquake, in terms of cause

and effect. What will be an ideal response?

Environmental & Atmospheric Sciences