Types of Mountains Folded Faultblock Volcanic Unwarped FOLDED
Types of Mountains • Folded • Fault-block • Volcanic • Unwarped
FOLDED MOUNTAINS http: //www. cssd 11. k 12. co. us/dohnts/images/earth/fldmtn. jpg
FOLDED MOUNTAINS • Appalachian Mountains in the eastern United States, and the Swiss Alps in Switzerland • form when two plates collide head on, and their edges crumble • consist mainly of sedimentary rocks, like limestone and shale
FAULT-BLOCK MOUNTAINS
FAULT-BLOCK MOUNTAINS • Consist of huge blocks of the earth's crust that have been tilted or pushed up along a fracture line called a fault • Sierra in California, Arizona is an example. • Created when a plate hits a fault and tips upside down, creating erosion and debris, which is at the base of the mountain.
VOLCANIC MOUNTAIN NAMIBIA IN AFRICA
Volcanic mountains • Formed when molten rock, or magma deep within the earth, erupts, and piles upon the surface • Made of basalt and rhyolite. • Takes place where two of the earth's tectonic plates collide.
UNWARPED MOUNTAINS • Black Hills in South Dakota • form when tectonic forces lift the earth's crust into a broad bulge or dome raising it above its surroundings • Erosion causes peaks and valleys to form.
• largest single mountain in the world • 30, 000 +feet above the ocean floor • 100 miles across at its base.
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