Abstract
Archaeological material and sites in the northern Nile delta record rates of land subsidence that are higher than those derived from radiocarbon-dated subsurface sediments. Reassessment of subsidence-rate calculations reveals that previous subsidence measurements of 1-5 mm/yr for the delta are minimum rates, because sediment reworking can result in radiocarbon-dated core ages that are older than the ages of final burial. Integration of archaeological and geologic subsurface data is essential for accurate age determinations, differentiation of sub-sidence from sea-level rise, and more precise calculation of vertical earth movement. Application herein of archaeological data to geological problems helps to refine subsidence-rate measurements between the flexure zone (landward margin of the Holocene Nile delta depocenter) and the coast.
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