Question 1
Folded limestones that are exposed high elevations in the Himalayas were originally deposited as sediments in a ________.
◦ late Paleozoic syncline north of the Tibetan Plateau
◦ deep ocean trench along the southern margin of India
◦ Cenozoic fault basin between Africa and Arabia
◦ marine basin between India and Eurasia
Question 2
The Appalachian Mountains may have once been as lofty as the Himalayan-Tibetan Mountain belt is today. Why are they not this high now?
◦ They formed long ago, and erosion has beveled them to their present low elevation.
◦ Opening of the North Atlantic Ocean converted lithosphere to asthenosphere beneath eastern North America, forcing eastern North America to sink to low elevations.
◦ The mountains cooled following the collision, which increased the density of the of the rocks by cooling, and isostasy forced the mountains to sink.
◦ They developed a dense crustal root following collision, and isostasy forced them to sink to their present elevation.
Hartmann's mountain zebra resting, showing its characteristic essentially unbarred belly
Piaget’s Three Mountain Task
Albert Bierstadt, The Rocky Mountains, Lander's Peak, (detail).
A typical belt-driven AIR pump. Air enters through the revolving fins behind the drive pulley. The ...
Ocean Conveyor Belt