Using the Principal of Superposition, choose the statement below that is correct.?

Question

Using the Principal of Superposition, choose the statement below that is correct.

A) An archeologist digs into the Earth and makes a pile of the rocks and dirt he removes. The rocks on top of the pile are the youngest.

B) A scientist studies a rock wall in the Grand Canyon. He is taking samples from half way down the wall. He knows that his rock sample is older than the rock at the top of the wall.

C) A small shift in the Earth’s crust pushes a large piece of rock onto the surface. This rock is younger than the rock below it

Answer 1

The correct answer is B).

The principle of superposition in geology states simple that in sedimentary rocks, without deformation, the youngest rocks are at the top and they get progressively older as you go deeper down.