Results 41 to 50 of about 8,119 (174)

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

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, Dhongil Lim, Jihun Kim, Jihun Kim, Wonnyon Kim, Jonguk Kim, Dongsung Kim, Le Zhang, Kyungun Kwack, Zhaokai Xu, Zhaokai Xu, Zhaokai Xu   +11 more
doaj   +1 more source

Serpentine tongue [PDF]

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
openaire   +3 more sources

Are spherulitic lacustrine carbonates an expression of large-scale mineral carbonation? : A case study from the East Kirkton Limestone, Scotland [PDF]

, 2018
BP Exploration Co. is thanked for funding, and particularly the Carbonate Team for supporting this research and for fruitful discussions. West Lothian Council and Scottish Natural Heritage are thanked for allowing access and permission for sampling the ...
Billing, Ian, Brasier, Alexander T, Fellows, Simon M., Matthews, Anna, McClymont, Erin L., McGill, Rona A.R., Mercedes-Martín, Ramon, Pedley, Martyn, Prior, Tim J., Reijmer, John J. G., Rogerson, Mike, Vonhof, Hubert   +11 more
core   +1 more source

Magnetic Characteristics of Highly Serpentinized Peridotite in the Iberia Abyssal Plain and Implications for Marine Magnetic Anomalies

Geochemistry, Geophysics, Geosystems
Serpentinization, 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, Zhaoxia Jiang, Kai Su, Mark J. Dekkers, Sanzhong Li, Qingsong Liu   +5 more
doaj   +1 more source

Harry Hess and sea-floor spreading [PDF]

, 1999
Harry Hess's hypothesis of sea-floor spreading brought together his long-standing interests in island arcs, oceanic topography, and the oceanic crust. The one unique feature of Hess's hypothesis was the origin of the oceanic crust as a hydration rind on ...
Allwardt, Alan O.
core  

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., Johnson, K. T. M., Parkinson, I. J., Pearce, J. A., Thirlwall, M. F.   +4 more
core   +1 more source

Magnetic properties of variably serpentinized peridotites and their implication for the evolution of oceanic core complexes [PDF]

, 2014
Serpentinization of ultramafic rocks during hydrothermal alteration at mid-ocean ridges profoundly changes the physical, chemical, rheological, and magnetic properties of the oceanic lithosphere.
Allerton, Alt, Andreani, Antony Morris, Bach, Bach, Baines, Beard, Beltrando, Besse, Bina, Blackman, Bortolotti, Bortolotti, Bortolotti, Boschi, Buck, Cann, Cannat, Cannat, Cannat, Chadima, Christensen, Coleman, Day, Dilek, Dilek, Dilek, Dimo-Lahitte, Douwe J. J. van Hinsbergen, Dunlop, Dunlop, Dyment, Escartín, Escartín, Escartín, Escartín, Evans, Evans, Frost, Frost, Früh-Green, Garcés, Gee, Grimes, Harrison, Hinsbergen, Ildefonse, Iyer, Katayama, Kelemen, Kelley, Kelso, Klein, Klein, Lavier, Liati, Linert, MacLeod, MacLeod, Maffione, Malvoisin, Marco Maffione, Mayergoyz, Meshi, Miller, Mohn, Moody, Morris, Muxworthy, Ménez, Mével, Nazarova, Nicolas, O'Hanley, Oliver Plümper, Oufi, Paulick, Pike, Plümper, Plümper, Prévot, Roberts, Robertson, Robertson, Sauter, Schlinger, Schmid, Smith, Snow, Tauxe, Thompson, Toft, Toljic, Tremblay, Tucholke, Vissers, Zijderveld, Özdemir, Özdemir   +99 more
core   +2 more sources

Metabolic challenges and key players in serpentinite-hosted microbial ecosystems

Frontiers in Microbiology, 2023
Serpentinite-hosted systems are amongst the most challenging environments for life on Earth. Serpentinization, a geochemical alteration of exposed ultramafic rock, produces hydrothermal fluids enriched in abiotically derived hydrogen (H2), methane (CH4),
Rabja Maria Popall, Anne Postec, Aurélien Lecoeuvre, Marianne Quéméneur, Gaël Erauso   +4 more
doaj   +1 more source

Origin and evolution of serpentinized peridotite from the Ciletuh Mélange in Sunda Arc, Indonesia: Evidence from petrography, mineralogy, and geochemistry

Journal of Asian Earth Sciences: X
The Ciletuh Mélange in southern Sundaland (West Java, Indonesia) is a key location for ophiolitic mélanges, featuring widespread serpentinized peridotite.
Rinaldi Ikhram, Takashi Hoshide, Tsukasa Ohba, Mega Fatimah Rosana, Adi Hardiyono   +4 more
doaj   +1 more source

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., Iglesias, Arturo, Kostoglodov, Vladimir, Mikumo, Takeshi, Payero, Juan S., Pérez-Campos, Xyoli, Shapiro, Nikolai   +6 more
core   +3 more sources