zones in this paper, we present a review on the types, physicochemical conditions and compositions of fluids/melts, as well as the migration behaviors of fluid-related characteristic elements (Nb-Ta-V) and the fractionation behaviors of non-traditional stable isotopes (Li-Mg) in subduction zones...
zones in this paper, we present a review on the types, physicochemical conditions and compositions of fluids/melts, as well as the migration behaviors of fluid-related characteristic elements (Nb-Ta-V) and the fractionation behaviors of non-traditional stable isotopes (Li-Mg) in subduction zones...
The flux balances of carbon and chlorine between subduction into the deep mantle and volcanic emissions into the atmosphere are crucial for the habitability of our planet1,2. However, pervasive loss of fluids from subducting slabs has been thought to cut
To explain the continual subsidence of a fore-arc region (basal erosion), a hydrofracture model was proposed, in which case the dehydrated fluids from the subducted slab fracture the overlying crust (Von Huene and Culotta, 1989, Von Huene et al., 2004). In this model, the subducted oceanic...
Propagation through the low-permeability rocks of the mid-crust is facilitated by a transient, reaction-induced permeability increase. We conclude that large-scale fluid-mediated rock transformations in continental collision and subduction zones occur on timescales of tens of years when reactive fluids ...
Thermogenic methane and hydrogen generation in subducted sediments of the Nankai Trough ArticleOpen access21 February 2024 Mantle wedge oxidation from deserpentinization modulated by sediment-derived fluids Article02 March 2023 Introduction Deeply sourced H2and CH4in fluids are potentially important contributors...
Subducted, H2O-rich lithologies in oceanic crust undergo dehydration reactions in the shallow upper mantle (< 150 km) leading to the generation of buoyant, hydrous fluids or partial melts responsible for arc volcanism (Poli and Schmidt, 2002). However, in the mantle portion of cooler slabs a ...
Understanding what happens to sediments and other crustal material during subduction has important implications for arc magmatism, crust-mantle exchange, and continental evolution. Do subducted sediments become underplated? How deep does such material subduct? Studies of ultrahigh-pressure rocks have shown...
crust subducted at a shallow angle under the far more ancient continental rocks 150 million to 200 million years ago. The slab, they say, could have slid more or less intact, underneath what is now the present-day Canadian tundra, where the mines are located. There, they say, fluids from...
investigations on the Kaghan UHP eclogite‐vein systems provide important insights into the mechanism and timing of metamorphic dehydration, fluid flow, and fluid–rock interaction in the deeply subducted Indian continental slab as well as the chemical characteristics of slab‐derived, aqueous fluids. ...