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DOI	10.1016/j.quascirev.2020.106619
	Glacial-interglacial variation in catchment weathering and erosion paces the Indian summer monsoon during the Pleistocene
	Jin Z.; Yu J.; Zhang F.; Qiang X.
发表日期	2020
ISSN	0277-3791
卷号	248
英文摘要	Silicate weathering via CO2 consumption is considered to regulate the long-term climate change. Discriminating silicate versus carbonate weathering from sedimentary records is helpful to understand the coupling relationship between weathering and past climate. However, owing to the paucity of well-dated and continuous records of weathering and erosion, the relationship between silicate and carbonate weathering and their links with mountain uplift and glacial-interglacial climate remain elusive. Geochemical analysis of a 666 m core from the Heqing basin, a paleolake situated at the southeastern margin of the Tibetan Plateau, demonstrates silicate versus carbonate weathering and erosion changes under Indian summer monsoon (ISM) conditions spanning the entire Pleistocene, via respective tracing between Rb/Sr and Al/Na ratios. The Rb/Sr record is interpreted as reflecting a competition between clayey silicate-origin Rb versus carbonate-origin Sr fluxes, whereas Al/Na ratio is a balance between weathering and erosion of silicate minerals, both pacing the glacial-interglacial cycles of the ISM. During interglacials, strong silicate weathering intensity reflected by low Al/Na values is mainly controlled by warmer temperatures, with the reduced variability during 1.82–0.92 Ma, recalling the pacing of the Arabian Sea surface temperature amplitudes. Within glacials, the weak carbonate leaching and clay erosion within the older and younger intervals are interrupted by strong clay erosion within the middle interval. In conclusion, the Heqing Rb/Sr and Al/Na records reveal the sensitivity of catchment weathering and erosion to ISM changes over glacial-interglacial timescales with warmer temperature enhancing silicate weathering and clay formation during interglacials and greater physical erosion during glacials. © 2020 Elsevier Ltd
英文关键词	Erosion; Glacial-interglacial cycle; Heqing; Indian summer monsoon; The Pleistocene; Weathering; Yunnan
语种	英语
scopus关键词	Analytical geochemistry; Atmospheric thermodynamics; Carbonation; Catchments; Climate change; Erosion; Glacial geology; Oceanography; Runoff; Silicate minerals; Weathering; Carbonate weathering; Coupling relationships; Geochemical analysis; Glacial-interglacial cycles; Indian summer monsoon; Interglacial climate; Sedimentary records; Silicate weathering; Rubidium compounds; catchment; chemical weathering; climate change; glacial-interglacial cycle; monsoon; paleoclimate; Pleistocene; summer; Arabian Sea; China; Heqing; Howard County [Indiana]; India; Indian Ocean; Indiana; Qinghai-Xizang Plateau; United States; Yunnan
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151270
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia; Open Studio for Oceanic-Continental Climate and Environment Changes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China
推荐引用方式 GB/T 7714	Jin Z.,Yu J.,Zhang F.,et al. Glacial-interglacial variation in catchment weathering and erosion paces the Indian summer monsoon during the Pleistocene[J],2020,248.
APA	Jin Z.,Yu J.,Zhang F.,&Qiang X..(2020).Glacial-interglacial variation in catchment weathering and erosion paces the Indian summer monsoon during the Pleistocene.Quaternary Science Reviews,248.
MLA	Jin Z.,et al."Glacial-interglacial variation in catchment weathering and erosion paces the Indian summer monsoon during the Pleistocene".Quaternary Science Reviews 248(2020).