Influence of dehydration on the electrical conductivity of epidote and implications for high-conductivity anomalies in subduction zones
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2016jb013767
Abstract: The anomalously high electrical conductivities (~0.1 to 1 S/m) in deep mantle wedge regions extensively detected by magnetotelluric studies are often associated with the presence of fluids released from the progressive dehydration of subducting slabs. Epidote… read more here.
Keywords: subduction zones; conductivity epidote; dehydration electrical; conductivity ... See more keywords
The intrinsic nature of antigorite breakdown at 3 GPa: Experimental constraints on redox conditions of serpentinite dehydration in subduction zones
Sign Up to like & getrecommendations! Published in 2020 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-020-01731-y
Abstract: Antigorite is considered as the most important source of water in subduction zones, playing a key role during arc magma genesis. Although, these magmas seem more oxidized than mid-oceanic ridge basalts (MORB), the possible inherent… read more here.
Keywords: serpentinite dehydration; subduction zones; breakdown; gpa ... See more keywords
Deep carbon cycle in subduction zones
Sign Up to like & getrecommendations! Published in 2019 at "Science China Earth Sciences"
DOI: 10.1007/s11430-018-9426-1
Abstract: The carbon cycle between the deep Earth and the atmosphere (i.e., the deep carbon cycle) can significantly affect the global climate on both long and short time scales. Although carbon in the deep Earth can… read more here.
Keywords: subduction zones; carbon cycle; cycle subduction; carbon ... See more keywords
Fluid-mobile elements in serpentinites: Constraints on serpentinisation environments and element cycling in subduction zones
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2017.07.017
Abstract: Abstract Fluid-mobile element (FME) systematics in serpentinites are key to unravel the environments of mantle rock hydration, dehydration, and element recycling in subduction zones. Here we compile serpentinite geochemical data and, for the first time,… read more here.
Keywords: subduction zones; fluid mobile; serpentinisation; subduction ... See more keywords
Nitrogen evolution within the Earth's atmosphere–mantle system assessed by recycling in subduction zones
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2017.11.045
Abstract: Abstract Understanding the evolution of nitrogen (N) across Earth's history requires a comprehensive understanding of N's behaviour in the Earth's mantle – a massive reservoir of this volatile element. Investigation of terrestrial N systematics also… read more here.
Keywords: mantle; evolution; subduction zones; subduction ... See more keywords
Elasticity of akimotoite under the mantle conditions: Implications for multiple discontinuities and seismic anisotropies at the depth of ∼600–750 km in subduction zones
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.115830
Abstract: Abstract The equation of state and elastic properties of akimotoite at simultaneously high pressures and high temperatures are obtained using first-principles calculations based on the density functional theory (DFT). The calculated results agree with the… read more here.
Keywords: seismic anisotropies; multiple discontinuities; subduction zones; subduction ... See more keywords
Deep fluid release in warm subduction zones from a breached slab seal
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.116046
Abstract: Abstract Petrological models and seismic data from subduction zones with geotherms of 7 K km−1 or higher suggest that slabs in these systems dehydrate effectively in the forearc. A large fluid flux is nevertheless released from… read more here.
Keywords: depth; crust; fluid; subduction zones ... See more keywords
Barium isotope systematics of subduction zones
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.02.006
Abstract: Abstract Subduction zones are the focal points of mass transfer between the surface and deep Earth. Despite their significance, there remains substantial debate regarding the specific mechanisms of material transport from the slab to the… read more here.
Keywords: isotope; subduction zones; subduction; material transport ... See more keywords
Electrical properties of dry polycrystalline olivine mixed with various chromite contents: Implications for the high conductivity anomalies in subduction zones
Sign Up to like & getrecommendations! Published in 2021 at "Geoscience frontiers"
DOI: 10.1016/j.gsf.2021.101178
Abstract: Abstract Chromite, a crucial high-conductivity mineral phase of peridotite in the ophiolite suite, has a significant effect on the electrical structure of subduction zones. The electrical conductivities of sintered polycrystalline olivine containing various volume percents… read more here.
Keywords: olivine; polycrystalline olivine; high conductivity; subduction zones ... See more keywords
Seismic probing of continental subduction zones
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2017.05.026
Abstract: Abstract High-resolution images of Earth’s interior provide pivotal information for the understanding of a range of geodynamic processes, including continental subduction and exhumation of ultrahigh-pressure (UHP) metamorphic rocks. Here we present a synthesis of available… read more here.
Keywords: high velocity; subduction zones; seismic probing; probing continental ... See more keywords
Machine Learning Can Predict the Timing and Size of Analog Earthquakes
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Research Letters"
DOI: 10.1029/2018gl081251
Abstract: Despite the growing spatiotemporal density of geophysical observations at subduction zones, predicting the timing and size of future earthquakes remains a challenge. Here we simulate multiple seismic cycles in a laboratory‐scale subduction zone. The model… read more here.
Keywords: subduction zones; timing size; machine learning; size ... See more keywords