GENERAL GEOLOGY

Detailed explanation-1: -law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.

Detailed explanation-2: -In short, each layer of sedimentary rock (also called a “bed”) is older than the one above it and younger than the one below it. Steno’s seemingly simple rule of superposition has come to be the most basic principle of relative dating.

Detailed explanation-3: -The law of superposition is one of the principles of geology scientists use to determine the relative ages of rock strata, or layers. This principle states that layers of rock are superimposed, or laid down one on top of another. The oldest rock strata will be on the bottom and the youngest at the top.

Detailed explanation-4: -The Law of Superposition Newer or younger rock layers are found on top. Older rock layers are found at the bottom. Scientists can read layers of rock knowing that each layer of sediment is deposited on top of older layers.

Detailed explanation-5: -The law of superposition is based on the common sense argument that the bottom layer had to laid down first. The bottom layer because it logically had to be laid down first must be older. The layers on top could only be laid down on top of the bottom layer so must be younger.