Dating Techniques - it is heated measures radiation dose...

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Archaeology 100 - Dating Techniques Technique Materials Dated Basic Technique Radiocarbon dating Thermoluminesence electrons given off by pottery shards Dendrochronology Paleomagnetism Obsydian Hydration obsydian measures hydration of obsydian specimens Uranium Series Potassium-argon dating Stratigraphy anything relevant Seriation anything once living (organic materials) measures radioactive decay of Carbon-14 to Carbon-12 (requires calibration since Carbon-14 concentrations in the atmosphere change over time) pottery, anything burned at high heats (possibly inorganic materials) anything made of wood (requires same tree species) (assuming knowledge of the year planted or chopped down) studying rings from outside; examining gradations in size, color, etc. anything baked (usually hearths) uses ions from fired materials to measure magnetism as compared to Earth's magnetism at that time Electron Spin Resonance anything that decomposes when
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Unformatted text preview: it is heated measures radiation dose present by comparing trapped electron population using microwaves and a magnetic field artifacts and bones embedded in calcium carbonate measures radioactive decay of uranium (calcium carbonate acts as a stable buffer around the unstable uranium) volcanic rocks and sediments measures radioactive decay of Potassium-40 to Argon-40 depends on superimposition of various sediments, features, and artifacts embedded in those sediments (only relative) artifacts in a larger assemblage (all related) (only measures dates relatively) allows groups of artifacts to be organized in succession; can be contextual or frequency seriation Time Period 50,000 + 10,000 + 5,000-100,000 125,000 50,000-500,000 years 50,000 + irrelevant practically - 10,000; theoretically - 100,000 as far back as samples can be attained as far back as samples can be attained...
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