Oxidizable carbon ratio dating is a method of dating in archaeology and earth science that can be used to derive or estimate the age of soil and sediment samples up to 35,000 years old.
The method is experimental, and it is not as widely used in archaeology as other chronometric methods such as radiocarbon dating. Pollan 1995 Excavations at Site 41WH24, Wharton Co., Texas.
OCR is claimed to have been calibrated against radiocarbon and historically dated features, from which an equation relating OCR to calendar age (see below) has been derived. These two procedures are commonly used in soil analysis to characterize the organic carbon content in agricultural soils.
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