IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Otolith microchemistry of modern versus well-dated ancient naked carpGymnocypris przewalskii: Implication for water evolution of Lake Qinghai
Zhou,L(Zhou,Ling)[1,2]; Jin,ZD(Jin,Zhangdong)[1,3]; Wang,CH(Wang,Chiahui)[4]; Li,FC(Li,Fuchun)[5]; Wang,YJ(Wang,Yujiao)[5]; Wang,XL(Wang,Xulong)][1]; Zhang,F(Zhang,Fei)[1]; Chen,LM(Chen,Liumei)[1]; Du,JH(Du,Jinhua)[1]
2015
Source PublicationJournal of Asian Earth Sciences
Volume105Issue:2015Pages:399-407
Subtype期刊论文
AbstractThere is ongoing debate over how the water level and composition of the water in Lake Qinghai changed in the past and might change in future. This study of the microchemistry of otoliths from ancient naked carp explores the chemistry of a relict lake isolated from Lake Qinghai during the Little Ice Age (LIA). A close correlation between the ages measured on fish bone and otoliths by AMS-14C, and by optically stimulated luminescence on overlying sediments, confirms a high water level in Lake Qinghai before 680–300 years ago. The contrasting compositions of the ancient otoliths relative to modern otoliths and waters indicate that the relict lake became enriched in 18O, Mg, Li, B and to a lesser extent Ba, but depleted in 13C, owing to strong evaporation, authigenic carbonates precipitation, (micro-)organism activity, and less fresh water input after it was isolated. If there were long-term fresh water input, however, a reverse trend might occur. The most important observation is that, because the waters have been supersaturated with respect to carbonates, authigenic carbonate precipitation would result in low but consistent Sr/Ca ratios in the lakes, as recorded by both the ancient and modern otoliths. The geochemical records of ancient versus modern biogenic carbonates provide insights into the long-term hydroclimatic evolution processes of an inland water body.
KeywordLake Qinghai naked carp Otoliths Microchemistry Lake water evolution
DOI10.1016/j.jseaes.2015.02.006
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9607
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China;
3.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China;
4.Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung 202, Taiwan;
5.College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China
Recommended Citation
GB/T 7714
Zhou,L,Jin,ZD,Wang,CH,et al. Otolith microchemistry of modern versus well-dated ancient naked carpGymnocypris przewalskii: Implication for water evolution of Lake Qinghai[J]. Journal of Asian Earth Sciences,2015,105(2015):399-407.
APA Zhou,L.,Jin,ZD.,Wang,CH.,Li,FC.,Wang,YJ.,...&Du,JH.(2015).Otolith microchemistry of modern versus well-dated ancient naked carpGymnocypris przewalskii: Implication for water evolution of Lake Qinghai.Journal of Asian Earth Sciences,105(2015),399-407.
MLA Zhou,L,et al."Otolith microchemistry of modern versus well-dated ancient naked carpGymnocypris przewalskii: Implication for water evolution of Lake Qinghai".Journal of Asian Earth Sciences 105.2015(2015):399-407.
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