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Electron spin resonance dating
Electron Spin Resonance Dating, or ESR dating, is a technique used to date newly formed materials, which carbon dating cannot, like carbonates, tooth enamel, or materials that have been previously heated like igneous rock. Electron spin resonance dating was first introduced to the science community in 1975, when Motoji Ikeya dated a speleothem in Akiyoshi Cave, Japan. ESR dating measures the amount of unpaired electrons in crystalline structures that were previously exposed to natural radiation. Age of substance can be determined by measuring the dosage of radiation since the time of its formation.
== Applications ==
Electron Spin Resonance Dating is being used in fields like radiation chemistry, biochemistry, and as well as geology, archaeology, and anthropology. ESR dating is used instead of carbon dating because ESR dating can date newly formed materials or previously heated rock. The dating of buried teeth has served as the basis for the dating of human remains.〔 Studies have been used to date burnt flint and quartz found in certain ancient ceramics. Newer ESR dating applications include dating previous earthquakes from fault gouge, past volcanic eruptions, and tectonic activity along coastlines.〔
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