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Lecture 2

Archaeology Lecture 2 - Excavation

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ANT100Y1 Archaeology ExcavationLaw of Superposition Sediments are deposited on top of preexisting sediments Dating TechniquesStratgraphy is a relative dating method Levels and by extension the artifacts ecofacts and features contained in them can be order through time based on stratigraphic position There are other methods known as absolute dating methods Dendrochronology Radiocarbon dating Potassium Argo Dating Thermoluminescene Dating Dendrochronology Three ring dating of preserved woodChronologies based on overlapping ring sequences LimitationsCannot be used in tropical regions and confined to certain tree species Radiocarbon Dating Radioactive isotope or variety of carbon which forms in the atmosphere Absorbed by plants during photosynthesisAbsorbed by animals when they eat plantsAfter death Celsius decays at a rate known its half life 573040yearsLibbys calculations were based on a curve of knowns Compared Egyptian treering and historical data to radiocarbon samples Analysis and InterpretationReconstruction careful analysis of the environment in which materials are found in order to say something about the circumstances by which that material came to be herePaul Bahn Circumstances natural and human agenciesData Processing Cleaning Conservation May or may not be necessary depends on the artifact classCataloguing
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