Boron geochemistry of the Central American Volcanic Arc: Constraints on the genesis of subduction-related magmas
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Sulfur from the subducted slab dominates the sulfur budget of the mantle wedge under volcanic arcs
2023, Earth and Planetary Science LettersRoles of Serpentinization in Plate Tectonics and the Evolution of Earth's Mantle
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2022, Earth and Planetary Science LettersPetrogenesis and tectonic implications of Early Cretaceous shoshonitic syenites in the northern Wuyi Mt Range, Southeast China
2019, Journal of Asian Earth SciencesCitation Excerpt :Considering that the shoshonitic quartz syenites from Madi and Chashan in the Lengshuikeng area have higher Ba/La coupled with higher (87Sr/86Sr)i and lower εNd(t) compositions, it would appear that the fluid was mainly derived from the subducted sediment rather than the subducting altered oceanic crust. Furthermore, geochemical studies on modern arc-related magmatism have shown that Ba/La could be used as an indicator of total slab derived input into the mantle wedge (Carr et al., 1990; Jenner et al., 2009; Leeman et al., 1994; Patino et al., 2000). Carr et al. (1990) observed a correlation between Ba/La ratio of arc lavas and the subduction angle along the Central American arc, and they interpreted that the low Ba/La ratio was due to larger volume of the overlying mantle wedge had been metasomatized during shallow subduction, resulting in a less pronounced subduction signature.
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Present address: Department of Earth and Planetary Sciences, Washington University, One Brookings Drive, Campus Box 1169, St. Louis, MO 63130-4899, USA.