Discuss the geometrical classification of folds with the help of neat well labelled diagrams.

Folds are fundamental structures in structural geology, formed by the bending or warping of rock layers under stress. They occur due to tectonic forces such as compression, tension, or shear, and their geometry is crucial for understanding the deformation history of rocks. The geometrical classification of folds is based on their shape, orientation, and interlimb angle. Below are the primary types of folds, explained along with their characteristics and well-labeled diagrams:

1. Based on Interlimb Angle

The interlimb angle is the angle between the limbs of a fold. Folds are classified into the following types:

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