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Explain how radiocarbon dating of fossils and artifacts differs from thermoluminescence

Archaeological finds worldwide have helped researchers to fill out the story of human evolution and migration. An essential piece of information in this research is the age of the fossils and artifacts. How do scientists determine their ages? Here are more details on a few of the methods used to date objects discussed in "The Great Human Migration" Smithsonian , July :.
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17.6: Radiocarbon Dating: Using Radioactivity to Measure the Age of Fossils and Other Artifacts

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Showing Their Age | History | Smithsonian Magazine

This essay will consider both the inherent strengths and weaknesses of Radiocarbon dating and Dendrochronology, and also the ways in which these techniques can be applied inappropriately. As might be expected, each of the techniques has limitations and conditions under which it can be applied; it is when the technique is applied to conditions outside these limitations, perhaps for reasons of interpretative determinism, that the integrity of the technique is undermined. Additional to these factors could be a multitude of other considerations not strictly properties of the technique itself. For example, the processes by which the technique is performed and the associated skills and knowledge required to produce accurate determinations will necessarily impact the availability of the technique, but availability and the associated monetary cost is not an intrinsic property of the technique itself. In order to evaluate the technique itself, an idealised situation will be considered, whereby it is assumed that an archaeologist would have equal and otherwise unbiased access to a range of dating techniques, and it remains only to choose the one most appropriate to the situation at hand. Most of the 14 C in the atmosphere originates in the action of cosmic rays on Nitrogen in the upper atmosphere. This unstable isotope of Carbon then enters the food chain, and in doing so, forms part of all organic matter Bayliss et al.
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Thermoluminescence dating

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Absolute dating is the process of determining an age on a specified chronology in archaeology and geology. Some scientists prefer the terms chronometric or calendar dating , as use of the word "absolute" implies an unwarranted certainty of accuracy. In archaeology, absolute dating is usually based on the physical, chemical, and life properties of the materials of artifacts, buildings, or other items that have been modified by humans and by historical associations with materials with known dates coins and written history.
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