Which of the following statements best characterizes the geology of western North America, starting in California and extending through British Columbia and 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
Question 2
What are fault-block mountains?
A) Mountains formed through folding and thrusting of the crust
B) Mountains consisting of exposed batholiths
C) Mountains that form by erosion of streams
D) Mountains formed through crustal extension and normal faulting
The Land Ordinance of 1785 called for surveying and dividing the Western Territories into square mil
Frank Gehry, Guggenheim Museum Bilbao, North Elevation.
Western basin edges are dominated by warm poleward-directed currents (for example, Gulf Stream), ...
Map of North America Flipped
Teaching in America
North America American Dagger Moth Caterpillar