1. What tectonic process is hypothesized to explain the onset of crustal extension of the Basin and
Range Province?
a. Convergence between oceanic and continental crust along the Cascadia subduction zone
B. Subduction of a divergent plate boundary beneath the western margin of the North American plate
C Strike-slip faulting along the San Andreas fault
d. Flat slab subduction beneath the North American plate - CORRECT ANSWER✅✅✅B. Subduction of
a divergent plate boundary beneath the western margin of the North American plate
2. What tectonic process is hypothesized to explain the location of the Rocky Mountains having formed
so far inland from the active plate boundary?
A. Convergence between oceanic and continental crust along the Cascadia subduction zone
B. Subduction of a divergent plate boundary beneath the western margin of the North American plate
C. Strike-slip faulting along the San Andreas fault
D. Flat slab subduction beneath the North American plate - CORRECT ANSWER✅✅✅D. Flat slab
subduction beneath the North American plate
3. All of the following national parks expose the Great Unconformity EXCEPT:
a. Grand Teton
B. Grand Canyon
C. Rocky Mountain
D. Yosemite - CORRECT ANSWER✅✅✅D. Yosemite
, 4. Which mountain range listed below exhibits the greatest amount of relief, i.e., the greatest elevation
change in the shortest lateral distance?
a. Panamint Range west of Death Valley
B. Teton Range
c. Rocky Mountain Front Range - CORRECT ANSWER✅✅✅B. Teton Range
5.Geologists from which university were the first to be permitted by the National Park Service to extract
a sediment core from Jackson Lake for studying the seismic history of the Teton Fault?
A. Harvard
B. Cal Tech
C. Yale
D. Kentucky - CORRECT ANSWER✅✅✅D. Kentucky
6. Based on the examples we've discussed so far this semester, do mountains tend to uplift faster or
slower than erosion acts to wear them down?
A. Faster
B. Slower - CORRECT ANSWER✅✅✅A. Faster
7. Which of the following is evidence that the Precambrian basement was uplifted near Rocky
Mountain National Park:
A. Dipping sedimentary rock layers ("flat irons") that were originally deposited as flat layers on top of
basement and subsequently uplifted and eroded
B. Uplift of basement along a transform fault
C. Folded metamorphic rocks
D. None of the above is evidence of uplifted basement near Rocky Mountain National Park - CORRECT
ANSWER✅✅✅A. Dipping sedimentary rock layers ("flat irons") that were originally deposited as flat
layers on top of basement and subsequently uplifted and eroded