Mountain formation
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Mountain Formation. 1. Mountain Formation. The process of tectonic mountain building is called orogenesis . Mountains are formed by tectonic forces called stress. 2. Types of stress. Tensional – pulling apart Compressional – pushing together

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Mountain Formation

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Mountain formation

Mountain Formation


1 mountain formation

1. Mountain Formation

  • The process of tectonic mountain building is called orogenesis.

  • Mountains are formed by tectonic forces called stress.


2 types of stress

2. Types of stress

  • Tensional – pulling apart

  • Compressional – pushing together

  • Shear – parallel forces, also called “strike slip”


3 types of mountain ranges

3.Types of Mountain Ranges

  • Fault block mountains caused by tensional stresses.

    • Also called Horst and Graben

    • Grand Tetons, Sierra Nevada, Basin and Range


Horst and graben

Horst and Graben

Horst

Graben


V types of mountain ranges

V.Types of Mountain Ranges

b. Fold Belt Mountains - caused by compressional stresses

  • largest and most complex mountain systems in the world

  • Alps, Appalachains, Himilayas, Northern Rockies, Urals,


V types of mountain ranges1

V.Types of Mountain Ranges


V types of mountain ranges2

V.Types of Mountain Ranges

c. Upwarped Mountains – caused by a broad arching of the crust. Usually caused by a magmatic intrusion lifting the crust.

  • Also called dome mountains

  • Southern Rockies, Black Hills, Adirondacks


V types of mountain ranges3

V.Types of Mountain Ranges

d. Volcanic Mountains – formed by repeated volcanic eruptions

  • Mt Kilamanjaro, Cascade Mountains.


Mountain ranges of the world

Mountain Ranges of the World


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