Define any four types of folds and explain any one.

Define any four types of folds and explain any one.
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2 Answers

Answer :

Types of folds:

1. Symmetrical folds

2. Asymmetrical folds

3. Overturned folds

4. Fan folds

5. Recumbent fold

6. Isoclinal folds

Symmetrical Fold: The fold in which the axial plane is not vertical but it is inclined is called as asymmetrical fold. The ascending and descending limb of asymmetrical fold are not parallel about the axial plane. 
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Answer :

State any four types of folds and explain any one.

Types of Folds:

1. Based on appearance in cross section.

i. Anticline fold

ii. Syncline fold

2. Based on position of axial plane.

i. Symmetrical fold

ii. Asymmetrical fold

iii. Overturned fold

iv. Isoclinal fold

v. Recumbent fold

3. Based on mode of occurrence.

i. Anticlinorium fold

ii. Synclinorium fold

iii. Dome fold

iv. Basin fold

4. Based on Degree of compression.

i. Open fold

ii. Closed fold

5. Based on position of axis.

i. Non plunging fold

ii. Plunging fold


Asymmetrical Fold: The fold in which the axial plane is not vertical but it is inclined is called as asymmetrical fold. Due to unequal compressive forces the older rock beds bends about its axial plane showing unsymmetrical nature. The angle of both limbs may be 600 and 300 with horizontal indicating asymmetrical fold.

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