The Principle of Inclusions Which States That the Source of Rock

Multiple Choice

The principle of inclusions which states that the source of rock fragments found in a unit must be older than the unit with the fragments is important because______ .

A) it allowed geologists to correlate rock units over large distances
B) it provided a tool for sorting out the relative timing of various geologic events
C) it provided a way to recognize if rocks had been deformed
D) it showed that igneous rocks were younger than sedimentary rocks