Auflistung nach Schlagwort "subduction zone"
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3D Local Earthquake Tomography of the Ecuadorian Margin in the Source Area of the 2016 Mw 7.8 Pedernales Earthquake
(Journal of Geophysical Research: Solid Earth, 2021-03-25)Based on manually analyzed waveforms recorded by the permanent Ecuadorian network and our large aftershock deployment installed after the Pedernales earthquake, we derive three‐dimensional Vp and Vp/Vs structures and ... -
An Exhumation Pulse From the Nascent Franciscan Subduction Zone (California, USA)
(Tectonics, 2020)We investigated a suite of metabasite blocks from serpentinite matrix and shale matrix mélanges of the California Coast Ranges. Our new data set consists of 40Ar/39Ar dates of amphibole and phengite and U-Pb dates of ... -
Earthquake Rupture on Multiple Splay Faults and Its Effect on Tsunamis
(Journal of Geophysical Research: Solid Earth, 2022-08-16)Detailed imaging of accretionary wedges reveals splay fault networks that could pose a significant tsunami hazard. However, the dynamics of multiple splay fault activation during megathrust earthquakes and the consequent ... -
Evolution of Magmatism in the New Hebrides Island Arc and in Initial Back-Arc Rifting, SW Pacific
(Geochemistry, Geophysics, Geosystems, 2020)We present new geochemical and isotopic data for rock samples from two island arc volcanoes, Erromango and Vulcan Seamount, and from a 500 m thick stratigraphic profile of lava flows exposed on the SW flank of Vate Trough ... -
Observations of Laboratory and Natural Slow Slip Events: Hikurangi Subduction Zone, New Zealand
(Geochemistry, Geophysics, Geosystems, 2020)Slow slip events (SSEs) are recognized as an important component of plate boundary fault slip, and there is a need for laboratory friction data on natural samples to guide comparisons with natural SSEs. Here, we compile a ... -
Plume-Induced Subduction Initiation: Single-Slab or Multi-Slab Subduction?
(Geochemistry, Geophysics, Geosystems, 2020)Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. ... -
Strain Signals Governed by Frictional‐Elastoplastic Interaction of the Upper Plate and Shallow Subduction Megathrust Interface Over Seismic Cycles
(Tectonics, 2022-05-03)The behavior of the shallow portion of the subduction zone, which generates the largest earthquakes and devastating tsunamis, is still insufficiently constrained. Monitoring only a fraction of a single megathrust earthquake ...