Lithium isotope compositions of the Yangtze River headwaters: Weathering in high-relief catchments

Ma, Tingting; Weynell, Marc; Li, Siliang; Liu, Yongsheng; Chetelat, Benjamin; Zhong, Jun; Xu, Shenglin; Liu, Cong‐Qiang

doi:10.1016/j.gca.2020.03.029

Cited by 49 publications

(32 citation statements)

References 93 publications

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“…MORB = Mid-Ocean Ridge Basalt; AOC = Altered Oceanic Crust. The expanded plot shows the δ 7 Li ranges for different river scenarios (Clergue et al, 2015;Dellinger et al, 2017;Dellinger et al, 2015;Gou et al, 2019;Huh et al, 2001;Huh et al, 1998;Kisakürek et al, 2005;Ma et al, 2020;Millot et al, 2010;Murphy et al, 2019;Pogge von Strandmann et al, 2016;Pogge von Strandmann et al, 2017b;Pogge von Strandmann and Henderson, 2015;Tomascak et al, 2016). It is noticeable that for each detailed regime (tropical, polar and basaltic rivers), intermediate W/D rivers range to higher δ 7 Li values than low or high W/D rivers.…”

Section: Ocean Processes Affecting Lithium Isotopesmentioning

confidence: 99%

“…A final scenario, where previously formed clays redissolve (v), drives δ 7 Li low again. Data from the Amazon River (Dellinger et al, 2015), Ganges River (Pogge von Strandmann et al, 2017b), High Himalayas (Bohlin and Bickle, 2019), New Zealand (Pogge von Strandmann and Henderson, 2015) and Yangtze (Ma et al, 2020) suggest that in areas where the exposure rate of fresh rock is rapid and water-rock contact time is relatively short (e.g. in mountains), riverine δ 7 Li values are low and rocklike, as a result of relatively congruent weathering (Fig.…”

Section: Dissolved Riverine Fluxes Of Lithium and Their Isotopic Compositionmentioning

confidence: 99%

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Lithium Isotopes

Strandmann

Dellinger

West

2021

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Section: Ocean Processes Affecting Lithium Isotopesmentioning

confidence: 99%

Section: Dissolved Riverine Fluxes Of Lithium and Their Isotopic Compositionmentioning

confidence: 99%

Lithium Isotopes

Strandmann

Dellinger

West

2021

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“…Although it has a dilution effect in the rainy season, the amount of non-point source pollutants, mine wastewater and geological materials generated by weathering entering rivers may increase (Li & Zhang, 2010;Xu et al, 2020b). Temperature, rainfall and other factors will affect the chemical weathering of rocks (Chen et al, 2020;Ma et al, 2020;Xu et al, 2020b;Zhong et al, 2017). In the rainy season, with the increase of river flow, chemostatic behavior is induced by increasing the surface area of active minerals, which accelerates the rocks' weathering (Xu et al, 2020b;Zhong et al, 2017).…”

Section: Controlling Factors For Dissolved Heavy Metalsmentioning

confidence: 99%

Distribution, source, water quality and health risk assessment of dissolved heavy metals in major rivers in Wuhan, China

Zhang

Gao

et al. 2021

PeerJ

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Heavy metals are released into the water system through various natural processes and anthropogenic activities, thus indirectly or directly endangering human health. The distribution, source, water quality and health risk assessment of dissolved heavy metals (V, Mn, Fe, Co, Ni, Zn, As, Mo, Sb) in major rivers in Wuhan were analyzed by correlation analysis (CA), principal component analysis (PCA), heavy metal pollution index (HPI), hazard index (HI) and carcinogenic risk (CR). The results showed that the spatial variability of heavy metal contents was pronounced. PCA and CA results indicated that natural sources controlled Mn, Fe, Co, Ni and Mo, and industrial emissions were the dominant factor for V, Zn and Sb, while As was mainly from the mixed input of urban and agricultural activities. According to the heavy metal pollution index (HPI, ranging from 23.74 to 184.0) analysis, it should be noted that As and Sb contribute most of the HPI values. The health risk assessment using HI and CR showed that V and Sb might have a potential non-carcinogenic risk and As might have a potential carcinogenic risk to adults and children in the study area (CR value exceeded target risk 10−4). At the same time, it was worth noting that As might have a potential non-carcinogenic risk for children around QLR (HI value exceeded the threshold value 1). The secular variation of As and Sb should be monitor in high-risk areas. The results of this study can provide important data for improving water resources management efficiency and heavy metal pollution prevention in Wuhan.

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“…Assuming that the average of geothermal fluid is assigned as the endmember composition (δ 7 Li 11.3‰, Li/Na 14.8 mmol/mol, Weynell et al, 2017), the plausible fractionation could result from the 7:3 mixing between a congruent dissolution of bed-sands and geothermal water (δ 7 Li 9.8‰, and Li/Na 12.1 mmol/mol, Figures 3A,B). Liu et al (2011) and Ma et al (2020) reported that the Li budgets in the upper reaches of the Changjiang and Mekong rivers are significantly affected by evaporite sources. Evaporites have relatively lower Li/Na (about 2-4 mmol/mol) and δ 7 Li (about 8‰, Liu et al, 2011) compared to geothermal waters (Weynell et al, 2017) and cannot be assigned as a starting composition of the Brahmaputra River (Figure 3).…”

Section: The Difference Between the Ganges Brahmaputra And Meghna Riversmentioning

confidence: 99%

The Influence of Weathering, Water Sources, and Hydrological Cycles on Lithium Isotopic Compositions in River Water and Groundwater of the Ganges–Brahmaputra–Meghna River System in Bangladesh

et al. 2021

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The silicate weathering of continental rocks plays a vital role in determining ocean chemistry and global climate. Spatiotemporal variations in the Li isotope ratio (δ7Li) of terrestrial waters can be used to identify regimes of current and past weathering processes. Here we examine: 1) monthly dissolved δ7Li variation in the Ganges River’s lower reaches; and 2) the spatiotemporal variation of river water of the Brahmaputra, Meghna rivers, and groundwater in Bangladesh. From the beginning to maximum flood discharges of the rainy season (i.e., from June to September), Li concentrations and δ7Li in the Ganges River show remarkable changes, with a large influence from Himalayan sources. However, most Li discharge across the rainy season is at steady-state and strongly influenced by the secondary mineral formation in the low-altitude floodplain. Secondary mineral formation strongly influences the Meghna River’s Li isotopic composition along with fractionation lines similar to the Ganges River. A geothermal input is an additional Li source for the Brahmaputra River. For groundwater samples shallower than ∼60 m depth, both δ7Li and Li/Na are highly scattered regardless of the sampling region, suggesting the variable extent of fractionation. For deep groundwater (70–310 m) with a longer residence time (3,000 to 20,000 years), the lower δ7Li values indicate more congruent weathering. These results suggest that Li isotope fractionation in rivers and groundwater depends on the timescale of water-mineral interaction, which plays an essential role in determining the isotopic signature of terrestrial Li inputs to the ocean.

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Lithium isotope compositions of the Yangtze River headwaters: Weathering in high-relief catchments

Cited by 49 publications

References 93 publications

Lithium Isotopes

Lithium Isotopes

Distribution, source, water quality and health risk assessment of dissolved heavy metals in major rivers in Wuhan, China

The Influence of Weathering, Water Sources, and Hydrological Cycles on Lithium Isotopic Compositions in River Water and Groundwater of the Ganges–Brahmaputra–Meghna River System in Bangladesh

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