In what two ways was the Laramide orogeny different from other orogenies?
The orogney took place much further inland from a convergent boundary, and volcanism and plutonism were not very common. Also, mountain building was mostly vertical, fault-bounded uplift rather than compression-induced folding and thrust faulting.
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According to the EPA, how many large coal power plants could be closed if all U.S. households replaced their existing refrigerators with efficient frost-free refrigerators now available?
A. 18 B. all C. 98 D. 0
A significant difference between peoples of ancient times and those of today is that transportation and communication have reduced the friction of distance and have accelerated the rate of diffusion
Indicate whether the statement is true or false.
If all of the following rocks were to completely melt and reach the same final temperature, which would produce magma with highest viscosity?
A. gabbro B. andesite C. rhyolite D. basalt E. diorite
What is the main cause of uplift during a continental collision?
A. an almost doubling of the thickness of continental crust B. down flexing of one continent in front of thrust belts C. thinning of the lithosphere D. addition of magmas from the subduction zone