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Evaluation of 14C Ages of Organic Fractions of Paleosols from Loess-Paleosol Sequences Near Xian, China

Published online by Cambridge University Press:  18 July 2016

M J Head ,
Weijian Zhou  and
Mingfu Zhou
M J Head
Affiliation:
Radiocarbon Dating Research Laboratory, Research School of Pacific Studies, Australian National University, Canberra 2601, Australia
Weijian Zhou
Affiliation:
Radiocarbon Dating Research Laboratory, Research School of Pacific Studies, Australian National University, Canberra 2601, Australia
Mingfu Zhou
Affiliation:
Radiocarbon Dating Research Laboratory, Research School of Pacific Studies, Australian National University, Canberra 2601, Australia
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Abstract

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The 14C dating of organic fractions from paleosol layers containing <2% carbon in loess-paleosol sequences from the loess plateau in China has yielded results that are quite often much younger than the true age of the sediments. Percolation of modern organic materials from agricultural activities, and binding of these materials within the weathered clays of the paleosols has meant that conventional pretreatment techniques for 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.

Type
II. Carbon Cycle in the Environment
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 680 - 695
Copyright
Copyright © The American Journal of Science 

References

Becker-Heidmann, P, Liu, L-W and Scharpenseel, H W, 1988, Radiocarbon dating of organic matter fractions of a Chinese mollisol: Zeitschr Pflanzernaehr Bodenk, v 151 p 37–39.Google Scholar
Calderoni, G and Schnitzer, M, 1984, Effects of age on the chemical structure of paleosol humic acids and fulvic acids: Geochim et Cosmochim Acta, v 48, p 2045–2051.CrossRefGoogle Scholar
Cao, et al 1966, A preliminary study of the Neocene in the You He area, Weinan County, Shaanxi Province, in Neocene conf on Lantian, Shaanxi, Proc: Beijing, Science Press, p 32–47 (in Chinese).Google Scholar
Christie, W W, 1984, Extraction and hydrolysis of lipids and some reactions of their fatty acid components: CRC Handbook of Chromatography: Lipids, v 1, p 33–46.Google Scholar
Ertel, J R and Hedges, J I, 1983, Bulk chemical and spectroscopic properties of marine and terrestrial humic acids, melanoidins, and catechol-based synthetic polymers in Christman, R F and Gjessing, E T, eds, Aquatic and terrestrial humic materials: Ann Arbor, Michigan, Ann Arbor Science, p 143–162.Google Scholar
Goh, K M, Molloy, B J P and Rafter, T A, 1977, Radiocarbon dating of Quaternary loess deposits, Banks Peninsula, Canterbury, New Zealand: Quaternary Research, v 7, p 177–196.CrossRefGoogle Scholar
Gilet-Blein, N, Marien, G and Evin, J, 1980, Unreliability of 14C dates from organic matter of soils, in Stuiver, M and Kra, R S, eds, Internatl 14C conf, 10th, Proc: Radiocarbon, v 22, no. 3, p 919–929.Google Scholar
Gupta, S K and Polach, H A, 1985, Radiocarbon practices at ANU: Monograph, 171p.Google Scholar
Head, M J (ms) 1979, Structure and chemical properties of fresh and degraded wood: Their effects on radiocarbon dating measurements: MSc thesis, Australian Natl Univ, 103 p.Google Scholar
Head, M J 1987 Categorisation of organic sediments from archaeological sites, in Ambrose, W R and Mummery, J M J, eds, Archaeometry: Further Australian studies: Dept Prehistory Research School of Pacific Studies, Australian Natl Univ, p 143–159.Google Scholar
Hodgson, G W, Hitchon, B, Taguchi, K, Baker, B L and Peake, E, 1968, Geochemistry of porphyrins, chlorins and polycyclic aromatics in soils, sediments and sedimentary rocks: Geochim et Cosmochim Acta, v 32, p 737–772.CrossRefGoogle Scholar
Institute of Botany, Academia Sinica, 1966, The study of palaeoplant material in Neocene Lantian, Shaanxi, in Neocene conf on Lantian, Shaanxi, Proc: Beijing, Science Press, p 157–181 (in Chinese).Google Scholar
Jia, R, Liu, T S and Yuan, B Y, 1987, A preliminary study on lipids in loess and paleosol of Luochuan section, China, in Tungsheng, L, ed, Aspects of loess research: Beijing, China Ocean Press, p 311–321.Google Scholar
Kigoshi, K, Suzuki, N and Shiraki, M, 1980, Soil dating by fractional extraction of humic acid, in Stuiver, M and Kra, R S, eds, Internatl 14C conf, 10th, Proc: Radiocarbon, v 22, no 3 p 853–857.Google Scholar
Kononova, M M, 1966, Soil organic matter: Oxford, Pergamon Press, p 400–404.Google Scholar
McIver, R D, 1962, Ultrasonics – A rapid method for removing soluble organic matter from sediments: Geochim et Cosmochim Acta, v 26, p 343–345.CrossRefGoogle Scholar
Qiao, Y, Huang, B, Shen, C and Zhou, M, 1985, 14C dating of loess, in Liu, T, ed, Loess and the environment: Beijing, China Ocean Press, p 48–50.Google Scholar
Scharpenseel, H W, 1977, The search for biologically inert and lithogenic carbon in recent soil organic matter, in Soil organic matter studies, vol II: Vienna, IAEA, p 193–200.Google Scholar
Scharpenseel, H W, Tsutsuki, K, Becker-Heidmann, P and Freytag, J, 1986, Untersuchungen zur Kohlenstoffdynamik und Bioturbation von Mollisolen: Zeitschr Pflanzernaehr Bodenk, v 149, p 582–597.Google Scholar
Steelink, C, 1985, Implications of elemental characteristics of humic substances, in Aiken, G R, McKnight, D M, Wershaw, L and McCarthy, P, eds, Humic substances in soil, sediment and water. Geochemistry, isolation and characterisation: New York, John Wiley & Sons, p 457–476.Google Scholar
Stevenson, F J, 1985, Geochemistry of soil humic substances, in Aiken, G R, McKnight, D M, Wershaw, L and McCarthy, P, eds, Humic substances in soil, sediment and water. Geochemistry, isolation and characterisation: New York, John Wiley & Sons, p 13–52.Google Scholar
Stuiver, M and Polach, H A, 1977, Discussion: Reporting of 14C data: Radiocarbon v 19 no 3, p 355–363.CrossRefGoogle Scholar
Thurman, E M, 1985, Humic substances in ground water, in Aiken, G R, McKnight, D M, Wershaw, L and McCarthy, P, eds, Humic substances in soil, sediment and water. Geochemistry, isolation and characterisation: New York, John Wiley & Sons, p 87–104.Google Scholar
Wen, Q, Diao, G and Sun, F, 1985, Geochemical characteristics of loess, in Liu, T, ed, Loess and the environment, Beijing, China Ocean Press, p 123–129.Google Scholar
Wu, Z and Yuan, B, 1985, Geological structure of basins with loess sediments, in Liu, T, ed, Loess and the environment, Beijing, China Ocean Press, p 20–30.Google Scholar