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The deficiency of organic matter C-14 dating in Chinese Loess-paleosol sample
Cheng, Peng1,2,3,4,5,6; Burr, George S.7; Zhou, Weijian1,2,3,4,5; Chen, Ning1,2,3; Hou, Yaoyao1,2,3; Du, Hua1,2,3; Fu, Yunchong1,2,3,6; Lu, Xuefeng1,2,3
Corresponding AuthorCheng, Peng(chp@ieecas.cn)
2020-03-01
Source PublicationQUATERNARY GEOCHRONOLOGY
ISSN1871-1014
Volume56Pages:6
AbstractIn 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.
KeywordC-14 Loess-paleosol Optically stimulated luminescence (OSL)
DOI10.1016/j.quageo.2019.101051
WOS KeywordLATE QUATERNARY LOESS ; NORTHWESTERN CHINA ; RADIOCARBON ; CARBON ; AMS ; FRACTIONS ; FOREST ; DATES ; RELIABILITY ; PYROLYSIS
Indexed BySCI ; SCI
Language英语
Funding ProjectChinese 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 Research AreaPhysical Geography ; Geology
Funding OrganizationChinese Academy of Sciences, China ; CAS Key Technology Talent Program ; Belt&Road Center for Earth Environment Studies
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000518869400006
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/12623
Collection加速器质谱中心
第四纪科学与全球变化卓越创新中心
Corresponding AuthorCheng, Peng
Affiliation1.Chinese Acad Sci IEECAS, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Xian AMS Ctr IEECAS, Xian 710061, Peoples R China
3.Shaanxi Prov Key Lab Accelerator Mass Spectrometr, Xian 710061, Peoples R China
4.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
7.Natl Taiwan Univ, Dept Geosci, Taipei 10617, Taiwan
Recommended Citation
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.
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