Answer:
principle of superposition
Explanation:
Principle of superposition -
According to the principle of superposition , the positioning of the layer are in a manner that , the youngest layer is near to the surface of the crust , where as the oldest layer is deep inside from the surface of the crust , is referred to as principle of superposition .
This method enables to determine the age of the layers according to their placement from the crust .
Hence , from the given information of the question ,
The correct answer is principle of superposition .
