Archaeological back bone dating fossil index seriation stratigraphy
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Layers are identified by archaeologists and the boundaries between them are often well-marked, where deposition of one layer is separated from the next by a clear interval or change in texture, color, or mineralogy.
Some are not clearly demarcated as deposition of one layer may merge with another so that boundaries between them are unclear, or a layer may change in composition from place to place. stratum; layers CATEGORY: feature; term DEFINITION: The definable layers of archaeological matrix or features revealed by excavation; units of sedimentation greater than one centimeter thick.
Thus the current ratio of lead to uranium in the mineral can be used to determine its age.the determination of the chronology of events studied from archaeological data.Two systems of archaeological dating are used: absolute and relative chronology.The deposit thus occurring forms layers depending on the nature of the material brought in by the people inhabiting the area.According to this method, the upper deposits are younger and the lower deposits are older.