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The deficiency of organic matter C-14 dating in Chinese Loess-paleosol sample

文献类型：期刊论文

作者Cheng, Peng2,3,4,5,6,7; Burr, George S.1; Zhou, Weijian2,3,4,6,7; Chen, Ning2,3,4; Hou, Yaoyao2,3,4; Du, Hua2,3,4; Fu, Yunchong2,3,4,5; Lu, Xuefeng2,3,4
刊名QUATERNARY GEOCHRONOLOGY
出版日期2020-03-01
卷号56页码:6
关键词C-14 Loess-paleosol Optically stimulated luminescence (OSL)
ISSN号1871-1014
DOI10.1016/j.quageo.2019.101051
通讯作者Cheng, Peng(chp@ieecas.cn)
英文摘要In the absence of reliable charcoal, wood or plant macrofossils, organic matter in loess-paleosols is often used for C-14 dating. However, organic matter can be contaminated by a variety of carbon sources within the sediments, and this may affect the radiocarbon dating results. Specific chemical pretreatments can be applied to minimize such effects, and comparisons with optically stimulated luminescence (OSL) dates from the same sediments allows us to assess potential open system effects on organic matter. Here we present comparisons of the two geochronometers from loess-paleosol deposits in the Chinese Loess Plateau. Our results show that loess -paleosol samples from the past 25 cal kyr BP generally yield reliable C-14 dates, however, beyond this range, specifically similar to 25-59 cal kyr BP, we observe a steady increase in OSL ages with depth, but no consistent increase in corresponding AMS C-14 ages. We suggest that relatively old samples from loess-paleosols should be studied using techniques such as compound-specific radiocarbon dating, ramped pyrolysis or stepped-temperature combustion.
WOS关键词LATE QUATERNARY LOESS ; NORTHWESTERN CHINA ; RADIOCARBON ; CARBON ; AMS ; FRACTIONS ; FOREST ; DATES ; RELIABILITY ; PYROLYSIS
资助项目Chinese Academy of Sciences, China[QYZDY-SSW-DQC001] ; Chinese Academy of Sciences, China[XDA23010302] ; CAS Key Technology Talent Program ; Belt&Road Center for Earth Environment Studies
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000518869400006
出版者ELSEVIER SCI LTD
资助机构Chinese Academy of Sciences, China ; CAS Key Technology Talent Program ; Belt&Road Center for Earth Environment Studies
源URL[http://ir.ieecas.cn/handle/361006/12622]  
专题地球环境研究所_加速器质谱中心
第四纪科学与全球变化卓越创新中心
通讯作者Cheng, Peng
作者单位1.Natl Taiwan Univ, Dept Geosci, Taipei 10617, Taiwan
2.Shaanxi Prov Key Lab Accelerator Mass Spectrometr, Xian 710061, Peoples R China
3.Xian AMS Ctr IEECAS, Xian 710061, Peoples R China
4.Chinese Acad Sci IEECAS, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
6.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
7.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Peng,Burr, George S.,Zhou, Weijian,et al. The deficiency of organic matter C-14 dating in Chinese Loess-paleosol sample[J]. QUATERNARY GEOCHRONOLOGY,2020,56:6.
APA Cheng, Peng.,Burr, George S..,Zhou, Weijian.,Chen, Ning.,Hou, Yaoyao.,...&Lu, Xuefeng.(2020).The deficiency of organic matter C-14 dating in Chinese Loess-paleosol sample.QUATERNARY GEOCHRONOLOGY,56,6.
MLA Cheng, Peng,et al."The deficiency of organic matter C-14 dating in Chinese Loess-paleosol sample".QUATERNARY GEOCHRONOLOGY 56(2020):6.

入库方式： OAI收割

来源：地球环境研究所

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