GEOLOGY

Detailed explanation-1: -The principle of superposition builds on the principle of original horizontality. The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2).

Detailed explanation-2: -The Law of Original Horizontality suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed. This allows us to infer that something must have happened to the rocks to make them tilted.

Detailed explanation-3: -According to the Principle of Original Horizontality, sediments are deposited horizontally. After they have been transformed into rock, strata may become tilted or folded by various tectonic movements. However, this principle basically states that “tilted or folded layers used to be flat”.

Detailed explanation-4: -Flat, horizontal layers of sediment should form flat, horizontal layers of rock. If rock layers are not horizontal, then some force must have disturbed them after they were formed. Folding and tilting are two ways that rock layers can be disturbed.

Detailed explanation-5: -The principle of superposition states that sedimentary layers are deposited in sequence, and that unless the entire sequence has been turned over by tectonic processes, the layers at the bottom are older than those at the top.