Mountain Building Ch. 11.

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Presentation transcript:

Mountain Building Ch. 11

Where Mountains Form: Mountain – is a large mass of rock that rises a great distance above its base. Mountains tend to occur in long belts that tend to follow CONVERGENT PLATE boundaries. These regions are where mountains form or have formed in the past.

How mountains form: Stress – the measure of the amount of force applied over a given area. Rocks that are on the surface of the earth tend to respond to stress by FAULTING/FRACTURING due to being rigid.

Divergent Convergent Transform

Rocks that are DEEPER in the earth may FOLD or STRETCH due to higher temperatures causing the rock to be less rigid.

FOLDED MOUNTAINS Mountains formed when two plates carrying continental crust collide; folding the rocks and earth with great force. Examples: Appalachians Alps Urals Northern Rocky Mts. Himalaya Mts.

DOME MOUNTAINS Is a nearly circular folded mountain. Individual isolated structures formed by uplift. Examples: Colorado Plateau Parts of Rocky Mts. Adirondack Mts. In NY Black Hills of South Dakota

FAULT-BLOCK MOUNTAINS Mountains formed from blocks of crust that have been faulted and tilted at the same time. Examples: Sierra Nevadas of California Wasatch Range of Utah Teton Range of Wyoming

VOLCANIC MOUNTAINS Mountains formed from volcanic eruptions, usually on continental crust near a subduction boundary. Examples: Andes Mountains Cascade Mountains