Question

what is the law of superposition

a fault or intrusion of rock younger than the rock it cuts through
in undisturbed rock layers the older rocks are on the bottom and younger rocks are on the top

Answer 1

[AI-generated answer — Bot GPT 3.5]

The law of superposition is a fundamental principle in geology and stratigraphy that states that in any sequence of undisturbed sedimentary rocks, each layer is younger than the one beneath it and older than the one above it. This means that, in an undisturbed sequence of rock layers, the oldest rocks are found at the bottom, while the youngest rocks are found at the top. This law forms the basis for determining relative ages of rock layers and establishing a chronological order of events in Earth's history.