气候变化领域集成服务门户(CCPortal): Early and mid-Holocene hydroclimate change recorded in tufa deposits in the Jiuzhaigou gully; eastern Tibetan Plateau

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DOI	10.1016/j.catena.2020.104834
	Early and mid-Holocene hydroclimate change recorded in tufa deposits in the Jiuzhaigou gully; eastern Tibetan Plateau
	Guo Y.; Ge Y.; Cui P.; Chen X.; Mao P.; Liu T.; Zhou L.
发表日期	2021
ISSN	3418162
卷号	196
英文摘要	Rhythmic nature of tufa deposits and analysis of hydrochemical proxies offer the potential to reconstruct the history of regional palaeo-hydrological and palaeo-climatic change. This paper investigates the tufa deposits of Sparkling Lake in the Jiuzhaigou gully of the eastern Tibetan Plateau (ETP). Detailed analysis of mineral composition, major elements and stable isotope (δ13C, δ18O) distinguished seven “dirty tufa layers” that are characterized by quartz-rich sediments, high kaolinite and high K, Na and Al. Compared with clean tufa deposits, dirty components in the tufa deposits were a result of surface soil erosion activity during strong monsoon rainfall periods within the catchment. The chronology of tufa deposits is established by using radiocarbon (14C) dating of organic material from the dirty tufa layers. Seven flood-rich periods and eight flood-poor periods during the early and mid-Holocene were recorded by the dirty tufa layers interbedded with clean tufa layers in the Jiuzhaigou gully. The tufa records are more sensitive response to regional hydroclimate change, in comparison with the peat, lake sediments and stalagmite records. The low values of δ18O and δ13C in the dirty tufa layers indicate the flood-rich periods (10310–8390, 7120, 6910, 6340, 5900, 5620, 5020 a BP) were mainly triggered by strong monsoon rainfall events during early and mid-Holocene. Considering the chronological uncertainties and sampling resolution, some other abrupt climate events (i.e, 8200 a BP and 5500 a BP) may be also recorded in the tufa deposits. These results greatly improve our understanding of hydroclimate change in the ETP during the early and mid-Holocene. © 2020 Elsevier B.V.
英文关键词	Dirty tufa deposits; Early and mid-Holocene; Eastern Tibetan Plateau; Hydroclimate change; Monsoon rainfall events
语种	英语
scopus关键词	Catena
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158341
作者单位	Key Laboratory of Mountain Hazards and Earth Surface Process; Chinese Academy of Sciences (CAS); Chengdu; Sichuan 610041; China; Institute of Mountain Hazards and Environment; CAS and Ministry of Water Conservancy; Chengdu; Sichuan 610041; China; CAS Center for Excellence in Tibetan Plateau Earth Science; Beijing; 100101; China; School of Geography and Resources Science; Sichuan Normal University; Chengdu; Sichuan 610101; China; Department of Hydrology and Atmospheric Sciences; University of Arizona; Tucson; AZ 85721-0011; United States; State Key Laboratory of Estuarine and Coastal Research; ECNUShanghai 200062; China
推荐引用方式 GB/T 7714	Guo Y.,Ge Y.,Cui P.,et al. Early and mid-Holocene hydroclimate change recorded in tufa deposits in the Jiuzhaigou gully; eastern Tibetan Plateau[J],2021,196.
APA	Guo Y..,Ge Y..,Cui P..,Chen X..,Mao P..,...&Zhou L..(2021).Early and mid-Holocene hydroclimate change recorded in tufa deposits in the Jiuzhaigou gully; eastern Tibetan Plateau.,196.
MLA	Guo Y.,et al."Early and mid-Holocene hydroclimate change recorded in tufa deposits in the Jiuzhaigou gully; eastern Tibetan Plateau".196(2021).