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14C GEOCHRONOLOGY AND RADIOCARBON RESERVOIR EFFECT OF REVIEWED LAKES STUDY IN CHINA

Published online by Cambridge University Press:  03 November 2021

Weijian Zhou Open the ORCID record for Weijian Zhou [Opens in a new window] ,
Yuda Chui ,
Ling Yang ,
Peng Cheng Open the ORCID record for Peng Cheng [Opens in a new window] ,
Ning Chen ,
Guodong Ming ,
Yan Hu ,
Wenli Li  and
Xuefeng Lu
Weijian Zhou*
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China Beijing Normal University, Interdisciplinary Research Center of Earth Science Frontier, Beijing100875, China CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xian710061, China Xi’an Institute for Innovative Earth Environment Research, Xi’an710061, China
Yuda Chui
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China University of Chinese Academy of Sciences, Beijing100049, China
Ling Yang
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China University of Chinese Academy of Sciences, Beijing100049, China
Peng Cheng
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China Joint Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application between Institute of Earth Environment, CAS, Xi’an 710061, China, and Xi’an Jiao Tong University, Xi’an710049, China Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao266061, China
Ning Chen
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China Joint Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application between Institute of Earth Environment, CAS, Xi’an 710061, China, and Xi’an Jiao Tong University, Xi’an710049, China
Guodong Ming
Affiliation:
CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui230026, China
Yan Hu
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China University of Chinese Academy of Sciences, Beijing100049, China
Wenli Li
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China University of Chinese Academy of Sciences, Beijing100049, China
Xuefeng Lu
Affiliation:
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an710061, China Joint Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application between Institute of Earth Environment, CAS, Xi’an 710061, China, and Xi’an Jiao Tong University, Xi’an710049, China
*
*Corresponding author. Email: weijian@loess.llqg.ac.cn
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Abstract

Lacustrine sediments are important archives for paleoclimate research, but there are evident carbon reservoir effects. Radiocarbon (14C) ages of lake sediments must be corrected for these effects before applying them to paleoclimate research. The authors review the lacustrine research from the last 20 years from different climatic regions in China, and systematically investigate the 14C age and correction methods used in the studies of 81 lakes. It is found that the climate-vegetation cover and distribution of carbonate around lakes are dominant factor controlling radiocarbon reservoir effects. In eastern China, the average 14C reservoir age is about 500 14C years and is associated with relatively dense vegetation. However, in northwest China and Qinghai-Tibet Plateau, widespread carbonate bedrock may markedly increase the radiocarbon reservoir age which frequently is about 1500 and 2500 14C years. A piecewise linear regression model provides more reliable 14C reservoir age correction that accounts for sedimentary facies and sedimentation rate changes. It is worth mentioning that when analyzing 14C ages deviated greatly from time sequence, the age anomalies may indicate important effects relevant to the study of climate and environmental changes.

Keywords

anomalous 14Clacustrine sedimentsradiocarbon reservoir effects
Type
Review Article
Information
Radiocarbon , Volume 64 , Issue 4: Seven Decades of Radiocarbon Dating: Remembering the Pioneers & Looking Towards the Future Part 2 of 2 , August 2022 , pp. 833 - 844
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Copyright
© The Author(s), 2021. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona

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