Define relative dating techniques

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Relatively young deposits can be sometimes dated using tree rings, varved-lake sediments, coral growth patterns, and other methods.Paleontology is the study of life in past geologic periods (fossil plants and animals), incorporating knowledge of an organism's phylogeny, relationships to existing organisms, and correlation to an established chronology of Earth History.In the past, relative dating methods often were the only ones available to paleoanthropologists.

Precambrian rocks must therefore be correlated by means of precise isotopic dating.

Correlating two separated outcrops means establishing that they share certain characteristics indicative of contemporary formation.

The most useful indication of time equivalence is similar fossil content, provided of course that such remains are present.

However, relative methods are , which is that if there are layers of deposits, those laid down first will be on the bottom and those laid down last will be on the top. However, geological strata are not always found to be in a neat chronological order.

Wind and water erode strata and some areas are uplifted or even tilted.

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