Chronology of a lacustrine core from Lake Linggo Co using a combination of OSL, C-14 and Pb-210 dating: implications for the dating of lacustrine sediments from the Tibetan Plateau
文献类型:期刊论文
作者 | Pan, BL (Pan, Baolin)6; Yi, CL (Yi, Chaolu)2,3; Zhang, JF (Zhang, Jiafu)4; Cao, GR (Cao, Guirong)5; Liu, JH (Liu, Jinhua)2; Jiang, T (Jiang, Tao)7; Yi, SW (Yi, Shuangwen)8; Li, DH (Li, Dehong)9; Huang, JW (Huang, Jianwei)9; Hu, G (Hu, Gang)1,2 |
刊名 | BOREAS |
出版日期 | 2018-04-01 |
卷号 | 47期号:2页码:656-670 |
ISSN号 | 0300-9483 |
关键词 | Optically Stimulated Luminescence High-resolution Osl Tangra Yumco Grain-size Environmental-changes Level Changes Single-grain Loess Site Lop Nur Monsoon |
DOI | 10.1111/bor.12291 |
英文摘要 | Vast palaeolakes once occupied the Qinghai-Tibetan Plateau (TP). Analyses of the sedimentary records of these lakes could potentially provide an extensive dating archive. Many previously constructed age-depth models simulating lacustrine cores have been principally based on radiocarbon (C-14) dating. However, such dating could have been hampered by the so-called lake reservoir effect' (LRE) and the reworking of lakebed sediments, resulting in inaccurate C-14 age-depth models and limiting interpretations of existing lacustrine palaeoclimatic records. Lake Linggo Co is located on the central TP, in one of the coldest and most arid regions of Tibet. We dated a 9.87-m-long lacustrine core extracted from the lakebed at a water depth of similar to 60m using a combination of Pb-210, C-14 and optically stimulated luminescence (OSL) techniques. Some C-14 ages showed significant age reversals; all the C-14 ages were much older than the Pb-210 and OSL ages for the same depths. This could possibly be attributed to the presence of old, inherited carbon, causing the inherited C-14 age to appear unstable during the deposition period. The Pb-210 and OSL ages were roughly concordant, and were also consistent with the stratigraphical succession. We therefore suggest that C-14 dating may, on its own, be inadequate for accurate dating of lacustrine sediment sites on the TP, and that the OSL method should also be applied in order to evaluate the reliability of any C-14 ages. With this approach, we constructed an age-depth model, revealing sedimentation rates of 1.7, 0.8, 6.8 and 0.6mm a(-1) between 0-1.9, 1.9-4.2, 4.2-4.4 and 4.4-9.4 ka, respectively. |
学科主题 | 地理学 |
WOS研究方向 | Physical Geography ; Geology |
语种 | 英语 |
出版者 | WILEY |
WOS记录号 | WOS:000428369500019 |
源URL | [http://ir.itpcas.ac.cn/handle/131C11/8692] |
专题 | 青藏高原研究所_图书馆 |
通讯作者 | Yi, CL (Yi, Chaolu) |
作者单位 | 1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China; 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 4.Peking Univ, Key Lab Earth Surface Proc, Dept Geog, Beijing 100871, Peoples R China; 5.Inst Disaster Prevent, Beijing 100601, Peoples R China; 6.Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China; 7.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Hubei, Peoples R China; 8.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China; 9.Natl Inst Metrol China, Beijing 100029, Peoples R China. |
推荐引用方式 GB/T 7714 | Pan, BL ,Yi, CL ,Zhang, JF ,et al. Chronology of a lacustrine core from Lake Linggo Co using a combination of OSL, C-14 and Pb-210 dating: implications for the dating of lacustrine sediments from the Tibetan Plateau[J]. BOREAS,2018,47(2):656-670. |
APA | Pan, BL .,Yi, CL .,Zhang, JF .,Cao, GR .,Liu, JH .,...&Hu, G .(2018).Chronology of a lacustrine core from Lake Linggo Co using a combination of OSL, C-14 and Pb-210 dating: implications for the dating of lacustrine sediments from the Tibetan Plateau.BOREAS,47(2),656-670. |
MLA | Pan, BL ,et al."Chronology of a lacustrine core from Lake Linggo Co using a combination of OSL, C-14 and Pb-210 dating: implications for the dating of lacustrine sediments from the Tibetan Plateau".BOREAS 47.2(2018):656-670. |
入库方式: OAI收割
来源:青藏高原研究所
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