Fossils and relative dating Dating naked girls

It is used to help identify what ancient environments looked like, when certain kinds of animals lived, and what changes have happened in a given environment over many years.

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A third fact emerges from the study of stratigraphy - the UNCONFORMITY.The table below summarises key features: Gastrioceras listeri is a particularly good example of a ZONE fossil.As it is free swimming it could have travelled a considerable distance.This is shown below: The Angular Unconformity The strata A to E was deposited first, tilted, subjected to erosion (peneplained) and submerged.Strata X to Z were laid down horizontally on top of the older beds.

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