Which of the four sedimentary layers in this figure is the oldest?
A)The layer on top
B)The layers in the middle
C)The layer on bottom
D)There is not enough information to tell.

Question

Which of the four sedimentary layers in this figure is the oldest? 
A)The layer on top 
B)The layers in the middle 
C)The layer on bottom 
D)There is not enough information to tell.

Quizplus · Accepted Answer

The principle of superposition states that in an undisturbed sequence of layers, the oldest layer is on the bottom and the youngest layer is on the top. Therefore, the layer on the bottom is the oldest.

Which of the Four Sedimentary Layers in This Figure Is