TERMS DESCRIPTIONS It is the action of process of forcing body of igneous rock between sedimentary rocks. 1.N TUISOIRN inStrusion FOSSIL INDEX 2.D X NEI SSOFLI 3. NEORISNO EnoSION It is used to define and identify geologic periods. - The action of surface processes that removes soil, rock, or dissolved material from one location to another. It is made up of sedimentary and igneous rock that was formed at the Earth's surface. 4.K ROCYSRL E A 5.NORLTOIECRA The process of showing that rocks or geologic events occurring at different locations are of the same age.