Results 271 to 280 of about 82,783 (326)
Magnetotelluric evidence for highly focused mantle melting along the ultraslow-spreading Gakkel Ridge, Arctic Ocean. [PDF]
Zhang T +16 more
europepmc +1 more source
Restoring the Missing Late Cretaceous Arc of Iran
Abstract Persistent arc magmatism archives fluid transport and mantle partial melting in subduction zones. However, arc magmatism often exhibits different magmatic records along the strike, as seen in the Tethyan orogenic belt. During Neo‐Tethys subduction under Iran, there was pulsed arc magmatism with Middle Jurassic and Eocene magmatic flare‐ups ...
Yiyang Lei +10 more
wiley +1 more source
Strain Rates Along the Alpine‐Himalayan Belt From a Comprehensive GNSS Velocity Field
Abstract The Alpine‐Himalayan belt is one of Earth's most dynamic and complex regions, characterized by intense tectonic deformation and seismicity. Comprehensive analyses of continental‐scale crustal deformation and seismic hazards along this extensive orogenic belt require the compilation of large geodetic data sets.
N. Castro‐Perdomo +5 more
wiley +1 more source
Abstract At the northern Hikurangi subduction zone, New Zealand, large slow slip events (SSEs) occur every 18–24 months. During the large 2019 SSE, ocean‐bottom seismometers were deployed directly above the main slip region. To analyze seismicity related to this event, we used machine learning and template matching techniques, along with a detailed ...
Yuriko Iwasaki +6 more
wiley +1 more source
Melt Architecture Under East Asian Volcanoes Revealed by Anisotropic Tomography
Abstract Cenozoic volcanic rocks in East Asia are widespread across subduction zones, oceanic plates, and continental interiors. The generation of these volcanic materials is closely associated with partial melting of the upper mantle and the stagnation of the Pacific slab in the mantle transition zone.
Xuran Liang +4 more
wiley +1 more source
Abstract The Capricorn Orogen, central to the West Australian Craton (WAC) and flanked by the Pilbara Craton to the north and the Yilgarn Craton to the south, records complex tectonic processes spanning from the Archean to the Neoproterozoic, including two major Paleoproterozoic collisions—the 2,215–2,145 Ma Ophthalmia Orogeny and the 2,005–1,950 Ma ...
Xiaobing Xu +7 more
wiley +1 more source
Observations of Small‐Scale Heterogeneity in the Upper Mantle Beneath Old Oceanic Lithosphere
Abstract We present tomographic images of the velocity structure of the upper mantle beneath old (∼90 ${\sim} 90$ Ma) oceanic lithosphere, derived from arrival time measurements of teleseismic body waves recorded by ocean‐bottom seismometers. Differential travel time measurements on P, S, and SKS body waves across a wide range of frequency bands show ...
A. Hariharan +5 more
wiley +1 more source
Abstract Using dense seismic data sets, we present a new 3D velocity model of Taiwan that images a prominent mid‐crustal (∼20–30 km) high‐velocity body beneath west‐central Taiwan. The inclusion of high‐quality post‐2012 recordings from the Central Weather Administration Seismic Network (CWASN) ensures the elimination of uncorrectable timing errors. In
E.‐J. Lee +10 more
wiley +1 more source
Hydro‐Mechanical‐Chemical Behavior of Sedimentary Rock During CO2 Injection
Abstract This study examines the effect of CO2 treatment duration on the poroviscoelastic properties of sedimentary rock, including sandstone, limestone, and shale. A hydro‐mechanical‐chemical (HMC) coupling framework is employed to evaluate the time‐dependent response of fluid‐saturated rock subjected to CO2 exposure.
Hyunbin Kim +2 more
wiley +1 more source
Abstract Viscosity of silicate melts governs magma transport and influences mantle dynamics, yet effects of pressure and water on melt viscosity remain poorly understood. Here, we report in situ falling‐sphere viscosity measurements on diopside (Di) melts with 0–3 wt.% H2O along the liquidus up to 7 GPa and 2103 K using synchrotron X‐ray radiography ...
Qi Chen +4 more
wiley +1 more source

