Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

EARTH SCIENCE ; NOBODY WANT TO HELP ME -.-

We'd be glad to help you if we knew what you're asking.

Maybe this site has your answer.

http://en.wikipedia.org/wiki/Law_of_superposition

The principle of superposition is a key concept in geological dating that was used to determine the relative ages of the cross-sections. It states that in an undisturbed sequence of rock layers, the youngest layers are on top, while the oldest layers are at the bottom.

To apply the principle of superposition, geologists analyze the different layers of rock in a cross-section. They examine the order in which the rock layers are arranged, looking for the layer on top and the layer at the bottom. By doing this, they can determine which layers are relatively younger or older compared to others.

Geologists also use the principle of superposition when examining the type of rock or fossils found within each layer. Certain types of rocks or fossils can be indicative of a specific geological time period. By analyzing the characteristics of the rocks and fossils in each layer, geologists can further refine their understanding of the relative ages of the cross-sections.

In summary, the principle of superposition is used in determining the relative ages of cross-sections by analyzing the order of rock layers and the type of rocks or fossils found within each layer. By examining these factors, geologists can establish a chronological sequence of events and gain insight into the geological history of an area.

What on earth are you talking about?