GEOLOGY

Detailed explanation-1: -principle of superposition: In an undeformed sequence, the oldest rocks are at the bottom and the youngest rocks are at the top. strata (singular: stratum): Distinct layers of sediment that accumulated at the earth’s surface.

Detailed explanation-2: -The oldest rock layers (and therefore the oldest fossils) are always on the bottom, and the youngest are on top. This is referred to as superposition (super = above). So, within one set of rock layers, you can tell which rocks (and fossils!) are oldest and which are youngest by their relative positions.

Detailed explanation-3: -The bottom layer of rock forms first, which means it is oldest. Each layer above that is younger, and the top layer is youngest of all. This ordering is relative because you cannot be sure exactly when each layer formed, only that each layer is younger then the one below it.

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. The law of superposition states that each rock layer or strata is older than the one above it.

Detailed explanation-5: -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.