The law of included fragments is a method of relative dating in geology. Essentially, this law states that clasts in a rock are older than the rock itself. For example, in sedimentary rocks, it is common for gravel from an older formation to be ripped up and included in a newer layer.

What is the relative dating law of crosscutting?

6.2.2 Relative Dating In any undisturbed sequence of strata, the oldest layer is at the bottom of the sequence, and the youngest layer is at the top of the sequence. The Cross-Cutting Law. Any feature that cuts across a body of sediment or rock is younger than the body of sediment or rock that it cuts across.