“Symmetrical" and "Asymmetrical" are types of …………………..

Correct option is A

Symmetrical and Asymmetrical folds are specific types of geological folds that occur due to the deformation of Earth's crust under compressive forces. A symmetrical fold has limbs that are mirror images of each other, indicating equal compressive forces from both sides. In contrast, an asymmetrical fold has limbs that are unequal in length or angle, suggesting unequal force or pressure during formation. These folds typically form in sedimentary rock layers under tectonic stress.
Information Booster:
1. Folds are caused by compressive forces acting on rock layers.
2. Symmetrical folds have equal angles and limb lengths.
3. Asymmetrical folds indicate varying compressive forces.
4. Folds are common in mountain ranges and areas of tectonic activity.
5. Studying folds helps geologists understand past tectonic movements and stress patterns.
Additional Knowledge:
· Faults: Fractures in Earth's crust where displacement occurs; not categorized as symmetrical or asymmetrical.
· Cracking: General term for fractures or splits in rocks, often due to weathering or sudden stress, not related to fold symmetry.
· Crustal fracture: Broad term for any break in the Earth’s crust, which can include faults and joints but not folds.