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Stable Strontium Isotopic Fractionation During Chemical Weathering in Drainage Basins: Mechanisms and Applications

Zheng Lai, Ni Su, Zhouyang Wu, Ergang Lian, Chengfan Yang, Fangliang Li, Shouye Yang

图4 世界不同河流水体 δ88/86Sr vs. Sr/Na关系图 阴影区域表示世界不同河流 δ88/86Sr的变化范围 [ 52]；碳酸盐岩和硅酸盐岩端元的 δ88/86Sr分别为-0.05‰~0.23‰和0.08‰~0.46‰；两端元的Sr/Na(摩尔浓度比）据参考文献[ 86]修改；数据来源：（a）来自参考文献[ 43]；（b）来自参考文献[ 44]；（c）来自参考文献[ 50]；（d）来自参考文献[ 46]；（e）来自参考文献[ 45]；（f）来自参考文献[ 49]；（g）来自参考文献[ 52]

Fig.4 Plot of δ88/86Sr versus Sr/Na for river waters worldwide The shaded area shows the range in riverine δ88/86Sr values worldwide [ 52]. The δ88/86Sr values of carbonate and silicate endmembers are -0.05‰~0.23‰ and 0.08‰~0.46‰, respectively. The Sr/Na ratios (molar ratio) of the two end members modified after reference[ 86]. Data source: (a) Data from reference[ 43]; (b) Data from reference[ 44]; (c) Data from reference[ 50]; (d) Data from reference[ 46]; (e) Data from reference[ 45]; (f) Data from reference[ 49]; (g) Data from reference[ 52]