Block Mountains
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Formation
- Fractures in the Earth's surface, a process referred to as taphrogeny, result in formation of fault-block mountains.
- If there are two parallel faults, the crustal block between them may either rise to produce a horst-block mountain or fall to produce a rift valley.
- A fallen block is known as a graben. The term block mountain may be applied to tilted fault-block and complex faulted uplands.
- Block mountains exist in countries like Nevada, Utah, and Arizona, where they form basin-and-range landscapes.
- Uplifted blocks may have younger covering formations stripped off them, leaving relict landforms as in the Harz and Black Forest terrains of Germany and in the Massif Central of France.
Teton Range, Wyoming
Source:
http://wwwa.britannica.com/ebi/article-204987 ?
http://pirate.shu.edu/~schoenma/mountains.htm ?
