Exam 9: Mountains

As the Juan de Fuca plate subducts under the North American plate, what specific type of margin would a geologist state that this boundary represents?

Explain how the Lewis Overthrust fault is a prime example of a thrust fault.

If a rock experiences substantial stress in the form of compression, what specific type of geologic structure would you expect to see in the field?

The underthrusting of a plate under a continental plate such as India under Tibet will cause what type of mountains to be uplifted?

The Andes Mountains contain extensive ____ rocks on both sides of the mountains that formed from the erosion of the rising peaks.

Explain how the nature of a rock (meaning its rock type) affects the way stress impacts a rock.

Island arcs are abundant in the ____, where convergence of oceanic plates is common.

Explain how faults are important to engineering, mining, and quarrying.

The term ____________________ refers to the process of mountain building.

A horst is a block of rock between two joints that has moved relatively upward along normal faults.

A slip is ____.

A joint is a fracture in the rock where what action has not occurred?

Explain how a subduction zone can add thickness to the Earth's crust.

Explain how the subduction of the Indian Plate under Tibet transitioned into a continent-to-continent collision region.

A thrust fault is a reverse fault that is nearly vertical because the angle of slippage is very high.

A subduction complex contains slices of continental crust scraped from the top of a subducting plate.

The Himalayas were formed ____.

The Andes Mountains consists predominantly of ____________________ rocks because this range was formed in a subduction zone that created numerous volcanoes.

Explain how mountains impact plant and animal habitats.   Provide an example of an organism that relies on elevation for its habitat.

Throughout its life cycle, a mountain continually rises due to isostasy.