Results 51 to 60 of about 45,086 (374)
Geophysical Research Letters, 2017 Previous studies have estimated that mantle serpentinization reactions generate H2 at a rate of 1010–1012 mol/yr along the global mid‐ocean ridge (MOR) system.
Lars H. Rüpke, Jörg Hasenclever
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Frontiers in Microbiology, 2023 The process of serpentinization supports life on Earth and gives rise to the habitability of other worlds in our Solar System. While numerous studies have provided clues to the survival strategies of microbial communities in serpentinizing environments ...
Lauren M. Seyler +9 more
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Neurology, 2008 A 69-year-old man presented with parkinsonism (asymmetric pill-rolling tremor, bradykinesia, and rigidity) and a distinctive serpentine tongue dyskinesia (video). The movement was constantly present at rest, stopping …
Sheehy, S, Lawrence, T, Thevathasan, A
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Hypotheses for near-surface exchange of methane on Mars [PDF]
, 2016 The Curiosity rover recently detected a background of 0.7 ppb and spikes of 7 ppb of methane on Mars. This in situ measurement reorients our understanding of the Martian environment and its potential for life, as the current theories do not entail any ...
Bloom, A. Anthony +4 more
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Native H2 Exploration in the Western Pyrenean Foothills
Geochemistry, Geophysics, Geosystems, 2021 Native hydrogen (H2) may represent a new carbon free‐energy resource, but to date there is no specific exploration guide to target H2‐fertile geological settings. Here, we present the first soil gas survey specifically designed to explore H2 migration in
Nicolas Lefeuvre +7 more
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Frontiers in Marine Science, 2022 The recently discovered Onnuri hydrothermal vent field (OVF) is a typical off-axis ultramafic-hosted vent system, located on the summit of the dome-like ocean core complex (OCC) at a distance of ∼12 km from the ridge axis along the middle region of the ...
Dhongil Lim +11 more
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Nonvolcanic tremor observed in the Mexican subduction zone [PDF]
, 2008 Nonvolcanic tremor (NVT) activity is revealed as episodes of higher spectral amplitude at 1–8 Hz in daily spectrograms from the continuous seismological records in Guerrero, Mexico.
Clayton, Robert W. +6 more
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Geochemistry, Geophysics, GeosystemsSerpentinization, a consequence of water‐rock interaction in mafic and ultramafic rocks, refers to the hydrothermal alteration of olivine and pyroxene with serpentine as the typical product.
Yuzhen Zhang +5 more
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Trace element geochemistry of peridotites from the Izu-Bonin-Mariana Forearc, Leg 125
, 1992 Trace element analyses (first-series transition elements, Ti, Rb, Sr, Zr, Y, Nb, and REE) were carried out on whole rocks and minerals from 10 peridotite samples from both Conical Seamount in the Mariana forearc and Torishima Forearc Seamount in the Izu ...
Ingram, G. +4 more
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Controls of faulting and reaction kinetics on serpentinization and double Benioff zones [PDF]
, 2012 The subduction of partially serpentinized oceanic mantle may potentially be the key geologic process leading to the regassing of Earth's mantle and also has important consequences for subduction zone processes such as element cycling, slab deformation ...
Andreani +75 more
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