Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation

Xiong, Zhifang; Li, Tiegang; Chang, Fengming; Algeo, Thomas J.; Clift, Peter D.; Bretschneider, Lisa; Lu, Zhengyao; Zhu, Xiao Fang; Sauer, Peter E.; Jiang, Fangming; Wan, Shiming; Zhang, Xu; Chen, Shuangxi; Huang, Jie

doi:10.1016/j.quascirev.2018.07.040

Cited by 27 publications

(22 citation statements)

References 117 publications

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“…A key obstacle in the interpretation of geochemical data from marine sediments as proxies for chemical weathering is to constrain their sources and the mechanism and strength of sediment transport processes because changes in provenance can affect these proxies and, thus, the environmental interpretation (Clift et al, ; Colin et al, ; Hu et al, ; Li et al, ; Wan et al, ; Xiong et al, ; Zheng et al, ). If the source can be constrained, then the sediment fluxes and transport processes involved can be related to continental weathering/erosion intensity and rates, mostly those associated with a monsoon climate (Bian et al, ; Cai et al, ; Chen et al, ; Clift et al, ; Wan et al, ; Xu et al, ; Zhao et al, ).…”

Section: Discussionmentioning

confidence: 99%

Depositional History and Indian Summer Monsoon Controls on the Silicate Weathering of Sediment Transported to the Eastern Arabian Sea: Geochemical Records From IODP Site U1456 Since 3.8 Ma

Cai

Clift

et al. 2019

Geochem Geophys Geosyst

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Systematic variation in elemental and Sr-Nd isotopic compositions of the clay-sized (<2 μm) siliciclastic fraction from the International Ocean Discovery Program (IODP) Site U1456 (Laxmi Basin) provides valuable insights into dynamic changes in continental weathering intensity in the western Himalayas and sediment inputs from the Indus River and Deccan Traps to the eastern Arabian Sea. Long-term, high-resolution proxy records from the sediment core reveal that the main sources (i.e., Indus River and Deccan Trap basalts) of the fine-grained detrital sediments have significantly changed with Indian summer monsoon variation over the studied time interval. During two depositional periods (3.8-3.3 and 2.7-1.2 Ma) corresponding to a weak Indian summer monsoon, the Indus River contributed fine-grained sediments with high K/Al, high 87 Sr/ 86 Sr, and low εNd to the study site. Between 3.3 and 2.7 Ma and between 1.2 and 0 Ma, deposition in the eastern Arabian Sea was governed by large inputs of Deccan Trap-derived basaltic sediments, characterized by high Mg/Al and Fe/Al, low 87 Sr/ 86 Sr and chemical index of alteration values, and high εNd values, associated with a change to a stronger Indian summer monsoon driving stronger chemical weathering. Synchronous changes in the geochemical proxies since 3.8 Ma highlight that variations in the inputs of siliciclastic sediments and Indian summer monsoon development are closely coupled. Plain Language SummaryThe Indian summer monsoon is an extremely important part of the Earth's climate system. Weathering and erosion of sediments are deeply affected by monsoon rainfall. Since 3.8 Ma, the geochemical records suggest that the clay-sized siliciclastic fractions at Site U1456 were mainly derived from the Indus River when the Indian summer monsoon was generally weak. In contrast, the siliciclastic sediment supply from the Deccan Traps increased when the monsoon intensified. In particular, we propose that chemical weathering intensities can be tracked using K/Al ratios and chemical index alteration and the smectite/(illite + chlorite) in the fine fraction of marine sediments from the eastern Arabian Sea since 3.8 Ma. Conducting research in the region is of great importance for understanding past and present climatic conditions.

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Section: Discussionmentioning

confidence: 99%

Depositional History and Indian Summer Monsoon Controls on the Silicate Weathering of Sediment Transported to the Eastern Arabian Sea: Geochemical Records From IODP Site U1456 Since 3.8 Ma

Cai

Clift

et al. 2019

Geochem Geophys Geosyst

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“…During interglacial periods excluding marine isotope stage 13 (which possibly resulted from a continental erosion event or variations in marine circulation; Chen et al, 2020;Ziegler et al, 2010), the opposite phase may occur in the continental source regions and sedimentary seas (Figures 2, 4, and 6; Tables 1-3; An et al, 2011;Chen, Xu, et al, 2019Clemens et al, 1996;Fauquembergue et al, 2019;Li et al, 2018;Liu et al, 2019Liu et al, , 2020Ramaswamy et al, 2008;Rixen et al, 2019;Weber et al, 2018;Yu et al, 2019Yu et al, , 2020. Similar changes in terrigenous detritus and organic matter supplies, marine productivity, sedimentation rates, and redox conditions of the bottom water, together with the forcing mechanisms, in the tropical marginal seas surrounding southeast Asia during the Quaternary were reported (Beaufort et al, 2001;Chen, Luo, et al, 2019;Xiong et al, 2018;Xu et al, 2018Xu et al, , 2020), suggesting the generally common nature of the abovementioned phenomena. XU ET AL.…”

Section: Physical Erosion In the Himalaya And Tibetan Plateau And Thementioning

confidence: 88%

Enhancements of Himalayan and Tibetan Erosion and the Produced Organic Carbon Burial in Distal Tropical Marginal Seas During the Quaternary Glacial Periods: An Integration of Sedimentary Records

Wan

Colin

et al. 2021

JGR Earth Surface

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The Himalayan and Tibetan highlands (mountains), with high rates of physical erosion, are extreme settings for earth surface processes, generating one of the largest recent terrigenous detritus and organic carbon discharges to the ocean. However, their significance with respect to the global carbon and climate cycles during the Quaternary is still unclear, especially in quantitative terms. Here, we present comprehensive records of continental erosion and weathering, terrestrial supply, marine productivity, and organic carbon burial in the distal Arabian Sea, Bay of Bengal, and southern South China Sea since ∼700 ka over orbital timescales. These records exhibit periodicities corresponding to sea level and Indian summer monsoon intensity changes. During glacial periods, the enhanced highland surface erosion and activation of deep-sea channels significantly increased inputs of terrigenous detritus, nutrients, and organic carbon into the Arabian Sea and Bay of Bengal, whereas strengthened continental shelf surface weathering and organic matter preservation occurred in the South China Sea. Conclusively, our integrative proxies in the study area demonstrate, for the first time, pronounced glacial burial pulses of organic carbon (∼1.12 × 10 12 mol/yr), dominantly originating from the highland surface erosion and marine productivity. Together with the increased silicate weathering on the exposed tropical continental shelves and in the tropical volcanic arcs, the enhanced burial flux of organic carbon in the tropical marginal seas, therefore, highlights the large contributions that tropical regions can make within the glacial-interglacial carbon inventory of the ocean and atmosphere and thus cause significant negative feedback on the global climate. Plain Language Summary Anthropogenic emissions of the greenhouse gas CO 2 are significantly changing the global climate and environment, resulting in a warmer state for which there is no historical analog. Marine records hold valuable lessons for the future of our warming world, as marine sediments are an important reservoir of the global organic carbon and then modulate release of CO 2 into the atmosphere. Currently, the major river systems originating from the Himalaya and Tibetan Plateau discharge ∼25% of the global fluvial sediment flux to the ocean, acting as an important source of continental organic carbon at tectonic and current timescales. Our integrative mineralogicalgeochemical study demonstrates the enhanced highland (mountain) erosion and activation of deep-sea channels, increased supplies of the produced materials, strengthened marine productivity, and effective preservation of organic carbon in the deep Arabian Sea and Bay of Bengal during cold periods. In contrast, strengthened chemical decomposition of silicates on the exposed continental shelf was coeval with increased organic carbon storage in the deep South China Sea. The study area contributed ∼1/4 of the current global marine burial flux of organic carbon during sea-level lowstands and thus represents a ...

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“…9.24΄E) [27] 、婆罗洲北部Gunung Buda石笋(4°N, 115°E) [28] 、印尼南部Flores岛上Liang Luar Cave石笋(8°32΄S, 120°25΄E) [29] Figure 1 Annual temperature at 0 m (a) and 150 m (b) water depth in the west Pacific region of WOA13 [25] plotted by ODV. White star denotes the location of core MD01-2386, and white dots denote the locations of core…”

Section: 千年尺度上也存在着显著的类似厄尔尼诺-南方涛动mentioning

confidence: 99%

“…(图3(a), (b)). 这一现象反映了MD01-2386站, 位于开放的赤道西太平洋边缘, 更紧密地联系于由北半球夏季辐射量驱动的海洋气候过程, 例如北太平洋的温跃层环流圈 [22] , 而望加锡海峡则对20 ka左右的岁差辐射量 ; (d) 厄尔尼诺强度的数值模拟结果 [41] ; (e) 印尼南部Flores岛石笋δ 18 O记录 [29] ; (f) 菲律宾东部岸外陆源颗粒堆积速率(T-MAR, 紫色)和化学风化指数(CIA, 黄色)记录 [27] ; (g) 格陵兰岛NGRIP(蓝色)和南极Dome C(绿色)的温度记录 [42,43] . 粗实线表示平滑趋势, 细线表示数据结果 Figure 3 Comparisons among paleoclimatic records of the millennial-scale events in the last deglacial over the western Pacific warm pool.…”

Section: 致显示了与Md01-2386的twt相类似的小幅度升温unclassified

“…O record of North Borneo's stalagmites [28] ; (d) ENSO strength of a model simulation [41] ; (e) δ 18 O record of Flores stalagmites [29] ; (f) terrigenous MAR (purple) and CIA (yellow) records from MD06-3054, eastern off Philippines [27] ; (g) temperature records from Greenland NGRIP [42] (blue) and Antarctic Dome C [43] (green). Thick lines show smoothed trends and thin lines show original data 变化响应不敏感.…”

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confidence: 99%

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Millennial- and centennial-scale variations in the upper-water temperature of Western Pacific Warm Pool during the last deglaciation

Yin¹,

Dang²,

Wang³

et al. 2019

Chin. Sci. Bull.

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Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation

Cited by 27 publications

References 117 publications

Depositional History and Indian Summer Monsoon Controls on the Silicate Weathering of Sediment Transported to the Eastern Arabian Sea: Geochemical Records From IODP Site U1456 Since 3.8 Ma

Depositional History and Indian Summer Monsoon Controls on the Silicate Weathering of Sediment Transported to the Eastern Arabian Sea: Geochemical Records From IODP Site U1456 Since 3.8 Ma

Enhancements of Himalayan and Tibetan Erosion and the Produced Organic Carbon Burial in Distal Tropical Marginal Seas During the Quaternary Glacial Periods: An Integration of Sedimentary Records

Millennial- and centennial-scale variations in the upper-water temperature of Western Pacific Warm Pool during the last deglaciation

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