relative dating laws / Relative dating — Science Learning Hub

relative dating laws

relative dating laws

Deep time Geological history of Earth Geological time units. Principle of Fossil Succession: Evolution has produced a succession of unique fossils that correlate to the units of the geologic time scale. If you find ammonites in a rock in the South Island and also in a rock in the North Island, you can say that both rocks are Mesozoic. The principle of cross-cutting relationships shows the sequence of these events. If an intrusive igneous rock is exposed via erosion, then later buried by sediments, the surrounding rocks will not be baked, as the intrusion was already cold at the time of sediment deposition. Many of the same principles are applied. This is known as the Great Unconformity and is an example of an angular unconformity.

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