Chemical dating techniques


22-Apr-2018 00:48

The DNA can then be analyzed to learn more about the organism.Any living organism can become fossilized, including bacteria, plants, and animals.They do not provide “exact” dates for the materials.Relative methods include stratigraphic correlation, which matches strata from different sites that are temporally comparable.

Relative methods focus on comparison of fossils, strata, or other artifacts to determine which is older and which is younger.Fossils are found in a variety of rock, but most often in sedimentary rock, which forms from the accumulation of sediments.The replacement of organic materials with inorganic materials is not always complete, as DNA is sometimes preserved within the fossil.Response: Niels Stensen created the Law of Superposition, which is the foundation for relative dating methods.

This law states that the youngest objects or layers are on the top, while the older objects and layers are deeper.Biostratigraphic or faunal dating utilizes known dates of appearance or extinction for specific fauna to provide approximate dates of the strata in which they are found.



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