GEOLOGY

Detailed explanation-1: -A rock’s relative age is compared with the ages of other rocks. The absolute age of a rock is the number of years since the rock formed. While it may be impossible to know the absolute age exactly, a geologist can sometimes determine it within a certain number of years.

Detailed explanation-2: -Relative age refers to the approximate age of a specific rock layer. It is determined by comparing its position to other rock layers. The process used to establish whether a rock layer or a geologic event is older or younger than the other without knowing their specific ages is called relative dating.

Detailed explanation-3: -Superposition: The most basic concept used in relative dating is the law of superposition. Simply stated, each bed in a sequence of sedimentary rocks (or layered volcanic rocks) is younger than the bed below it and older than the bed above it.