1.This question has not been answered completely During the Cenozoic, Arizona wa
ID: 161153 • Letter: 1
Question
1.This question has not been answered completely
During the Cenozoic, Arizona was stretched apart by:
A. volcanic activity
B. subduction activities
C. extensional forces
Point Value: 3
2.This question has not been answered completely
The Basin and range province was formed during the Cenozoic by:
A. extension of the continental crust
B. thickening of the continental crust
C. sea floor spreading
Point Value: 3
3.This question has not been answered completely
During the Cenozoic, Intermontane basins formed between the:
A. Appalachian uplifts
B. Laramide uplifts
C. cascade volcanoes
Point Value: 3
4.This question has not been answered completely
Oligocene thick sequences of sandstones and red shales of the Sespe Formation were deposited by:
A. Oceans
B. rivers
C. volcanic ash
Point Value: 3
5.This question has not been answered completely
The basin and range geology is characterized by:
A. a series of subducting slabs
B. a series of volcanic arcs
C. a series of north-south-trending fault-block mountains with basins between
Point Value: 3
6.This question has not been answered completely
Middle Miocene eruption of flood basalt of eastern Washington and Oregon spewed out of crustal fissures from:
A. Mantle plume or hot spot
B. deep ocean magma chamber
C. transform plate activities
Point Value: 3
7.This question has not been answered completely
Goosnecks of the San Juan River, Southeastern Utah, before the uplift of the Colorado Plateau have been a:
A. mountainous region
B. low-lying region
C. submerged below the ocean
Point Value: 3
8.This question has not been answered completely
Since the middle Miocene, Sierra Nevadas and Cascade have rotated :
A. southwesward
B. eastward
C. northward
Point Value: 3
9.This question has not been answered completely
The snake river basalt flood plain was formed from:
A. meteorite impacts
B. crustal extension
C. mantle hotspot
Point Value: 3
10.This question has not been answered completely
The bend in Emperor -Hawaiian seamount reflect a change of plate motion of pacific plate about:
A. 90 million years ago
B. 70 million years ago
C. 40 million years ago
Explanation / Answer
1. C-External forces.
2. Crustal extention is the reason and hence, the correct option is A.
3. Larmade uplifts is the correct answer. Hence, the correct option is B.
4. Sepse formation was formed at riverine, shoreline, and flood plane environment. Hence, the correct option is B.
5. The correct option is C.
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