Validation of the BASALT model for simulating off-axis hydrothermal circulation in oceanic crust†
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2016jb013758
Abstract: Fluid recharge and discharge between the deep ocean and the porous upper layer of off-axis oceanic crust tends to concentrate in small volumes of rock, such as seamounts and fractures, that are unimpeded by low-permeability… read more here.
Keywords: axis hydrothermal; model; oceanic crust; basalt model ... See more keywords
Eclogitization of the Subducted Oceanic Crust and Its Implications for the Mechanism of Slow Earthquakes
Sign Up to like & getrecommendations! Published in 2017 at "Geophysical Research Letters"
DOI: 10.1002/2017gl074945
Abstract: The generating mechanism and process of slow earthquakes can help us to better understand the seismogenic process and the petrological evolution of the subduction system, but they are still not very clear. In this work… read more here.
Keywords: crustal eclogitization; oceanic crust; slow earthquakes; subducted oceanic ... See more keywords
Opening of the central Atlantic Ocean: Implications for geometric rifting and asymmetric initial seafloor spreading after continental breakup
Sign Up to like & getrecommendations! Published in 2017 at "Tectonics"
DOI: 10.1002/2017tc004596
Abstract: Study of the deep structure of conjugate passive continental margins combined with detailed plate kinematic reconstructions can provide constraints on the mechanisms of rifting and formation of initial oceanic crust. In this study the central… read more here.
Keywords: opening central; central atlantic; crust; atlantic ocean ... See more keywords
Metal fluxes during magmatic degassing in the oceanic crust: sulfide mineralisation at ODP site 786B, Izu-Bonin forearc
Sign Up to like & getrecommendations! Published in 2019 at "Mineralium Deposita"
DOI: 10.1007/s00126-019-00900-9
Abstract: Volcanogenic massive sulfide deposits are enriched in metals that are either derived from hydrothermal alteration of the basement rocks or supplied by exsolution of metal-rich volatiles during magmatic differentiation. The extent to which each process… read more here.
Keywords: mineralisation; sulfide; metal; oceanic crust ... See more keywords
The Surtsey volcano geothermal system: An analogue for seawater-oceanic crust interaction with implications for the elemental budget of the oceanic crust
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119702
Abstract: Abstract Surtsey is a young volcanic island in the offshore extension of Iceland's southeast rift zone that grew from the seafloor during explosive and effusive eruptions in 1963–1967. In 1979, a cored borehole (SE-1) was… read more here.
Keywords: geothermal system; crust; temperature; surtsey ... See more keywords
Seismic evidence for Earth's crusty deep mantle
Sign Up to like & getrecommendations! Published in 2017 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2017.04.036
Abstract: Abstract Seismic tomography resolves anomalies interpreted as oceanic lithosphere subducted deep into Earth's lower mantle. However, the fate of the compositionally distinct oceanic crust that is part of the lithosphere is poorly constrained but provides… read more here.
Keywords: mantle; deep mantle; heterogeneity; deep earth ... See more keywords
Renormalisation of global mantle dynamic topography predictions using residual topography measurements for “normal” oceanic crust
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2018.07.018
Abstract: Abstract We compare mantle dynamic topography predicted from mantle convection modelling with residual topography measurements for oceanic regions, where crustal basement thickness is 10.0 km or less. Measurements of residual topography, calculated by removing the… read more here.
Keywords: topography; topography measurements; mantle dynamic; residual topography ... See more keywords
The fate of carbonate in oceanic crust subducted into earth's lower mantle
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.01.041
Abstract: Abstract We report on laser-heated diamond anvil cell (LHDAC) experiments in the FeO–MgO–SiO2–CO2 (FMSC) and CaO–MgO–SiO2–CO2 (CMSC) systems at lower mantle pressures designed to test for decarbonation and diamond forming reactions. Sub-solidus phase relations based… read more here.
Keywords: mantle; lower mantle; oceanic crust; carbonate ... See more keywords
A re-assessment of the nitrogen geochemical behavior in upper oceanic crust from Hole 504B: Implications for subduction budget in Central America
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.115735
Abstract: Abstract The geochemical behavior of N during seawater-oceanic crust alteration remains poorly constrained. Yet, it is a central parameter to assess the flux of N to subduction zones. Most studies proposed that hydrothermally altered basaltic… read more here.
Keywords: hole 504b; subduction; crust; central america ... See more keywords
Low-temperature oceanic crust alteration and the isotopic budgets of potassium and magnesium in seawater
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2020.116290
Abstract: Abstract Low-temperature ( δ 41 K∼0‰), which is ∼0.50‰ enriched relative to bulk silicate Earth (BSE, δ 41 K= -0.54‰). Here, we present a suite of isotopic systems ( δ 41 K, δ 26 Mg,… read more here.
Keywords: seawater; low temperature; crust; alteration ... See more keywords
Closing the loop: Subducted eclogites match thallium isotope compositions of ocean island basalts
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.02.004
Abstract: Abstract Thallium (Tl) isotope compositions of ocean island basalts (OIBs) have been proposed as a novel tracer of subducted oceanic crust and sediments in ocean island basalt sources, which could act as direct confirmation that… read more here.
Keywords: isotope; ocean island; isotope compositions; oceanic crust ... See more keywords