Results 21 to 30 of about 3,877 (262)

Crystallization of Superfast‐Spreading Oceanic Crust (ODP Hole 1256D, Pacific Ocean): Constraints From Zircon Geochronology

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Studies of oceanic crust, which covers a large proportion of the Earth's surface, have provided significant insight into the dynamics of crustal accretion processes at mid‐ocean ridges.
C. Johan Lissenberg   +3 more
doaj   +1 more source

The Evolution of Powell Basin (Antarctica)

open access: yesRemote Sensing
Powell Basin is an ocean basin formed as a result of the Scotia Sea evolution. The existing tectonic models propose a variety of starting and ending ages for the spreading of the basin based on seafloor magnetic anomalies.
Alberto Santamaría Barragán   +2 more
doaj   +1 more source

Ridge Jumps and Mantle Exhumation in Back-Arc Basins

open access: yesGeosciences, 2021
Back-arc basins in continental settings can develop into oceanic basins, when extension lasts long enough to break up the continental lithosphere and allow mantle melting that generates new oceanic crust.
Valentina Magni   +3 more
doaj   +1 more source

Modeling heat transfer from a convecting, crystallizing, replenished silicic magma chamber at an oceanic spreading center

open access: yesGeochemistry, Geophysics, Geosystems, 2011
Most hydrothermal systems at oceanic spreading centers are underlain by basaltic magma bodies; however, some are underlain by higher‐silica magmas such as andesite or dacite.
Lei Liu, Robert P. Lowell
doaj   +1 more source

Gravitational Potential Energy per Unit Area as a Constraint on Archean Sea Level

open access: yesGeochemistry, Geophysics, Geosystems, 2018
To constrain the density structure of Archean lithosphere, I assume that gravitational potential energy (GPE) per unit area at Archean spreading centers equals that for continents whose surfaces lay near sea level.
Peter Molnar
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

Partial Melting of Lower Oceanic Crust Gabbro: Constraints From Poikilitic Clinopyroxene Primocrysts

open access: yesFrontiers in Earth Science, 2018
Successive magma batches underplate, ascend, stall and erupt along spreading ridges, building the oceanic crust. It is therefore important to understand the processes and conditions under which magma differentiates at mid ocean ridges.
Julien Leuthold   +6 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Oceanic core complex development at the ultraslow spreading Mid‐Cayman Spreading Center [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2011
Roughly a third of the global mid‐ocean ridge system spreads at <20 mm/yr (full rate) with predicted low crustal thicknesses, great axial depths, end‐member basalt compositions, and prominent axial faults. These predictions are here further investigated along the ultraslow (15–17 mm/yr) Mid‐Cayman Spreading Center (MCSC) through a compilation of ...
W. Hayman, N.   +5 more
openaire   +2 more sources

Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere

open access: yesNature Communications, 2022
Upward depletion of ophiolitic mantle is produced by melt-peridotite reaction with lateral melt/rock ratio variations in an asthenospheric upwelling column, which flows to become the horizontal oceanic lithospheric mantle under spreading centers.
Qing Xiong   +6 more
doaj   +1 more source

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