Relative dating verses absolute dating methods


05-Nov-2016 22:30

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Scientists measure the proportion of carbon-14 left in the organism to determine its age.In palaeontology and archaeology, it becomes necessary to determine the age of an artifact or fossil when it is uncovered.The Law of Superposition, which states that older layers will be deeper in a site than more recent layers, was the summary outcome of 'relative dating' as observed in geology from the 17th century to the early 20th century.The regular order of occurrence of fossils in rock layers was discovered around 1800 by William Smith.From top to bottom: Rounded tan domes of the Navajo Sandstone, layered red Kayenta Formation, cliff-forming, vertically jointed, red Wingate Sandstone, slope-forming, purplish Chinle Formation, layered, lighter-red Moenkopi Formation, and white, layered Cutler Formation sandstone.Photo from Glen Canyon National Recreation Area, Utah.Dendrochronology involves recognizing the sequence of tree rings.

Some relative dating: determines only whether an independent.Relative dating helps determine what came first and what followed, but doesn't help determine actual age.