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 age structure of human populations in West Africa and Western Europe, as of 2000.
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
The hazmat training pyramid. It is important to train from the ground up, starting with a firm grasp ...
Map of North America Flipped