Want to learn more? If we return to our example of the layered cake, the cake has to be there first before you can cut with a knife. Some fossils, called index fossils, are particularly useful in correlating rocks. In archaeology presumes the science relative age? Sign Up. EJ Brill
This principle allows sedimentary layers to be viewed as a form of vertical time line, a partial or complete record of the time elapsed from deposition of the lowest layer to deposition of the highest bed.
What does relative dating mean !
Become a Member Already a member? Geologic time extends back 4. These foreign bodies are picked up as magma or lava flows, and are incorporated, later to cool in the matrix. Sea Floor Spreading: Degree Level. The Mesozoic Era: