There are four main types of mountains based on their origin: 1) Fold mountains like the Himalayas and Andes are formed by the folding of crustal rocks under compressive forces. 2) Block mountains such as the Vosges and Black Forest are formed by faulting of the earth's crust. 3) Volcanic mountains including Kilavea volcano and Stromboli volcano are built up from accumulated volcanic materials. 4) Residual mountains such as the Aravalli and Nilgiri ranges are formed by differential weathering that removes softer rock layers and leaves behind harder rock.

2. TYPES OF MOUNTAINS
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Bed Geography

3.  Are land form have height of 900 Km or more
from sea level.
 The name for the processes that collectively
produce a mountain belt is orogenesis

4.  Based on its origin there are
1) Fold mountains
2) Block mountains
3) Volcanic mountains
4) Residual mountains

5.  Formed due to folding of crustal rocks by compressive
force.
 They are young mountains.
 Sediments are found up to great depth.
 Are highest and most extensive mountains.
 Generally found along the margins of continents.
 E.g. Himalaya, Rockies, Andes, Atlas etc

6. FOLD MOUNTAINS

8.  Known as fold block mountains.
 Formed due to faulting by compressive force.
 Represent the up standing parts of the ground between
two fault or either side of a rift valley.
 Also called horst mountains
 E.g. Vosges, Black forest mountain, Rhine Rift valley.

9. Block mountains

10.  Formed by the accumulation of volcanic materials.
 Based on the mode eruption different types of volcanic
mountains are formed.
 E.g. Kilavea volcano in southern Hawaii Island
Stromboli volcano in Lipasari island.

11. Volcanic mountains

12.  Formed due to difference in weathering process.
 The upper layer of the rock is removed.
 Hard rock remained as residual mountains.
 E.g. Aravalli range, Nilgiri range


13. RESIDUAL MOUNTAINS

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