After studying the diagram above. Jenny concluded that the layer of clay was older than the layers of sand and gravel.

Question

After studying the diagram above. Jenny concluded that the layer of clay was older than the layers of sand and gravel.

Jack concluded that the layers of loam were younger than the layer of limestone.

According to the principle of superposition who made the correct conclusion?

Jack is correct.
Jenny is correct.
Both Jenny and Jack are correct.
Neither Jenny nor Jack are correct.

Answer 1

Both Jenny and Jack are correct, according to the principle of superposition which states that in an undisturbed sequence of sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.