Journal ArticleDOI
Electrical conductivity of the serpentinised mantle and fluid flow in subduction zones
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TLDR
In the mantle wedge of subduction zones, electromagnetic profiles reveal high electrical-conductivity bodies as mentioned in this paper and water released by dehydration of the slab induces melting of the mantle under volcanic arcs that can explain the observed high conductivities.About:
This article is published in Earth and Planetary Science Letters.The article was published on 2011-07-15. It has received 107 citations till now. The article focuses on the topics: Mantle wedge & Volcanic arc.read more
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Serpentine in active subduction zones
TL;DR: Serpentinization is a key phenomenon for understanding the geodynamics of subduction zones in the 10-200 km depth range as discussed by the authors. But their rheological properties have a strong influence on deformation partitioning and seismicity at depths.
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On the Causes of Electrical Conductivity Anomalies in Tectonically Stable Lithosphere
Kate Selway,Kate Selway +1 more
TL;DR: In this paper, the authors used magnetotelluric (MT) data from stable lithosphere to understand the electrical resistivity of the entire lithospheric column and are therefore one of the most important data sources for understanding the structure, composition and evolution of the lithosphere.
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Segmentation of plate coupling, fate of subduction fluids, and modes of arc magmatism in Cascadia, inferred from magnetotelluric resistivity
Philip E. Wannamaker,Rob L. Evans,Paul A. Bedrosian,Martyn Unsworth,Virginie Maris,R. Shane McGary,R. Shane McGary +6 more
TL;DR: In this paper, five magnetotelluric (MT) profiles have been acquired across the Cascadia subduction system and transformed using 2-D and 3-D nonlinear inversion to yield electrical resistivity cross sections to depths of ∼200 km.
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Water‐rich bending faults at the Middle America Trench
TL;DR: In this paper, the authors use seafloor electromagnetic data collected across the Middle America Trench (MAT) offshore of Nicaragua to create a comprehensive electrical resistivity image that illuminates the infiltration of seawater along bending faults.
References
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Journal ArticleDOI
Experimentally based water budgets for dehydrating slabs and consequences for arc magma generation
Max W. Schmidt,Stefano Poli +1 more
TL;DR: In this article, phase diagrams of hydrous mid-ocean ridge (MOR) basalts to 330 km depth and hydrous peridotites to 250 km depth are compiled for conditions characteristic for subduction zones.
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Serpentine Stability to Mantle Depths and Subduction-Related Magmatism
Peter Ulmer,V. Trommsdorff +1 more
TL;DR: Results of high-pressure experiments on samples of hydrated mantle rocks show that the serpentine mineral antigorite is stable to ∼720�C at 2 gigapascals, to ∼690 �C at 3 gigapascalals, and to ∼620�C to 5 gigapASCals.
Volatiles in subduction zone magmas : concentration and fluxes based on melt inclusion and volcanic gas data
TL;DR: In this paper, the fluxes of volatiles subducted back into the mantle along subduction zones and returned from the mantle to the surface reservoir via magmatism suggests that there is an approximate balance for structurally bound H2O and Cl.
Journal ArticleDOI
Volatiles in subduction zone magmas: concentrations and fluxes based on melt inclusion and volcanic gas data
TL;DR: In this paper, the fluxes of volatiles subducted back into the mantle along subduction zones and returned from the mantle to the surface reservoir via magmatism suggests that there is an approximate balance for structurally bound H2O and Cl.
Journal ArticleDOI
Serpentinization of the forearc mantle
Roy D. Hyndman,Simon M. Peacock +1 more
TL;DR: A wide range of geophysical and geological data indicate that extensive serpentinization in the forearc mantle is both expected and observed as discussed by the authors, and that large volumes of aqueous fluids must be released upwards by dehydration reactions in subducting oceanic crust and sediments.