Transcript to the Power Point on Types of Mountains

Folded Mountain
-compressional forces squeeze the rock layers
from opposite sides causing it to buckle.
Folded Mountain
Ex.
Up-Warped Mountain
- crust is pushed upward by forces inside the earth.
Up-Warped Mountain
- crust is pushed upward by forces inside the earth.
Up-Warped Mountain
Ex.
Adirondak Mountains
Rockies
Rockies
Black Hills
Volcanic Mountain
-molten material reaches the surface through a weak area of crust and
piles up, one layer on top of another to form a cone-shaped structure
Volcanic Mountain
Ex.
Moana Loa
Moana Loa – shield volcano
Mt. St. Helens
Mt. St. Helens
Vesuvius
Etna
Colima, Mexico
One day a man from a small village in Michoacán, Mexico was going out in his fields. Just then the ground nearby
opened up a fissure. There was a greenish smoke and a smell of sulfur. Then the ground rose up 2 ½ meters high.
Paricutin exploded out of a cornfield about 200 miles west of Mexico City in early 1943, giving the modern world its
first opportunity to witness the birth of a volcano. Within a year, the volcano's cinder cone reached 1,100 feet. Within
two years, its slow-moving lava flows buried most of the town of Paricutin. The lava eventually covered about 10
square miles.
Paricutin, Mexico
Paricutin is not expected to erupt again.
The village was rebuilt some distance away.
Fault Block Mountain
- huge tilted blocks separated from surrounding rock by faults.
Fault Block Mountain
- huge tilted blocks separated from surrounding rock by faults.
Fault Block Mountain
Ex.
Tetons
Sierras - California
Franklin Mts. - Texas
San Pedro Valley
Thirty miles south of Salt Lake City, near the mouth of Provo Canyon in Orem, Utah is an excellent example of fault
block mountains. The north-south trending Wasatch Range extends throughout the center of Utah. The western flank of
the range is very steep and relatively straight, the result of displacement along the extensive and still-active Wasatch
Fault. Summits along the crest of the range have elevations between 9,000 and 10,000 feet. The mountain-sized fault
blocks of this region developed in a fairly orderly fashion, breaking roughly at right angles to the westward direction of
stress. As visible in this photo, the truncated spurs of the Wasatch Mountains provide evidence that movement on the
Wasatch fault is geologically recent.
California