Geologic evidence indicates that more than 25% of the entire Pacific Coast of North America consists of ____.
A)volcanic rocks
B)oceanic crust
C)metamorphic rocks
D)accreted terranes
E)Precambrian continental crust

Question

Quizplus · Accepted Answer

Accreted terranes are pieces of crust that have been added to the edge of a continent through tectonic processes, such as subduction and collision. Geologic evidence shows that much of the Pacific Coast of North America is composed of accreted terranes, including the Coast Range, Klamath Mountains, and Olympic Mountains. These terranes have different ages and rock types, indicating that they originated from different regions and were transported to the Pacific Coast through tectonic events over millions of years.

Geologic Evidence Indicates That More Than 25% of the Entire