Solution And Answer Test Bank Physical Geology Chapter 10

SOLUTION AND ANSWER TEST BANK PHYSICAL GEOLOGY CHAPTER 10
1. Oceanic crust provides a record of approximately ___ of Earth's history.
A) 4%
B) 25%
C) 75%

D) 95% - CORRECT ANSWER✅✅✅A) 4%


2. The oldest continental crust contains rocks as old as
A) 400 million years.
B) 50 million years.
C) 40 billion years.

D) 4 billion years. - CORRECT ANSWER✅✅✅D) 4 billion years.


3. What mountain chain runs along the eastern margin of North America?
A) the Andes
B) the Appalachians
C) the Caledonides

D) the Cordillera - CORRECT ANSWER✅✅✅B) the Appalachians


4. The geologic events preserved in the Canadian Shield took place mainly during the
A) Archean eon.
B) Paleozoic era.
C) Phanerozoic eon.

D) Mesozoic era. - CORRECT ANSWER✅✅✅A) Archean eon.


5. Where are the oldest rocks in North America located?
A) in the Appalachian Mountains
B) in the Canadian Shield

,C) in the Basin and Range province

D) in the Rocky Mountains - CORRECT ANSWER✅✅✅B) in the Canadian Shield


6. Which of the following is not a common rock type in the Canadian Shield?
A) gneisses
B) granitic rocks
C) highly deformed metamorphosed volcanic rocks

D) undeformed sedimentary rocks - CORRECT ANSWER✅✅✅D) undeformed sedimentary
rocks


7. Most of the rocks of the interior platform of North America were deposited in a(n)
A) continental rift.
B) extensive shallow sea.
C) deep-ocean basin.

D) volcanic island arc. - CORRECT ANSWER✅✅✅B) extensive shallow sea.


8. What type of geologic contact separates the rocks of the Canadian Shield from the rocks of the
Great Plains? (Hint: Consider the type and age of the rocks found in each area.)
A) intrusive contact
B) strike-slip fault
C) thrust fault

D) unconformity - CORRECT ANSWER✅✅✅D) unconformity


9. How thick is the sequence of sedimentary rocks that comprises the Great Plains?
A) several tens of meters thick
B) several kilometers thick
C) several hundreds of meters thick

D) several tens of kilometers thick - CORRECT ANSWER✅✅✅B) several kilometers thick

, 10. The Blue Ridge province of the Appalachian fold belt was thrust as sheets over the top of
which geologic province?
A) the Appalachian Plateau province
B) the Piedmont province
C) the Coastal Plain province

D) the Valley and Ridge province - CORRECT ANSWER✅✅✅D) the Valley and Ridge
province


11. The North American Cordillera formed over a period of
A) 2 million years.
B) 10 million years.
C) 50 million years.

D) 200 million years. - CORRECT ANSWER✅✅✅D) 200 million years.


12. Why is the North American Cordillera topographically higher than the Appalachians?
A) because the Appalachians have undergone less erosion
B) because the Cordillera formed by continent-continent collision
C) because the main orogeny in the Cordillera was more recent
D) because the spreading rate of the East Pacific Rise is greater than the spreading rate of the
Mid-Atlantic Ridge - CORRECT ANSWER✅✅✅C) because the main orogeny in the
Cordillera was more recent


13. How far do continental deformation zones, like the Cordilleran orogenic belt, extend from a
plate boundary?
A) a few kilometers
B) a few hundreds of kilometers
C) a few tens of kilometers

D) approximately 1000 kilometers - CORRECT ANSWER✅✅✅D) approximately 1000
kilometers