What is relative dating and how is it used Thaiteen sex webcam
Before Darwin’s time, “natural philosophers” (no one called themselves a geologist in the 1600’s), determined some basic principles that allowed scientists to put geologic events in relative order.Archaeologists use many different techniques to determine the age of a particular artifact, site, or part of a site.Plotting several curves can allow the archaeologist to develop a relative chronology for an entire site or group of sites.For detailed information about how seriation works, see Seriation: A Step by Step Description.
Not surprisingly, relative dating is relatively easy and cheap, while absolute dating is time consuming and expensive. Look at the picture below showing several models of cars.Seriation is thought to be the first application of statistics in archaeology. The most famous seriation study was probably Deetz and Dethlefsen's study Death's Head, Cherub, Urn and Willow, on changing styles on gravestones in New England cemeteries.The method is still a standard for cemetery studies.Stratigraphy is based on the law of superposition--like a layer cake, the lowest layers must have been formed first.In other words, artifacts found in the upper layers of a site will have been deposited more recently than those found in the lower layers.
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This is absolute dating, and as you can see, it is a bit more difficult.