Evaluation of 14C Ages of Organic Fractions of Paleosols from Loess-Paleosol Sequences Near Xian, China
- 1 January 1989
- journal article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 31 (03) , 680-695
- https://doi.org/10.1017/s0033822200012285
Abstract
The 14C dating of organic fractions from paleosol layers containing 14C dating would not isolate a reliable chemical fraction. The total sequence from Bei Zhuang Cun, in Shaanxi Province, reflects the climatic history of the area for ca 30,000 years, ranging from the interstadial of the last glacial period to the postglacial period. Analysis of solvent extracts of organic material from this site indicates that they are mainly composed of carbohydrate residues originating from the relatively recent agricultural activity. Validity of the humic components for dating will be discussed.Keywords
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