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The westward lithospheric drift, its role on the subduction and transform zones surrounding Americas: Andean to cordilleran orogenic types cyclicity
(Elsevier, 2020-07)
We investigate the effect of the westerly rotation of the lithosphere on the active margins that surround the Americas and find good correlations between the inferred easterly-directed mantle counterflow and the main ...
Tectonic segmentation across Patagonia controlled by the subduction of oceanic fracture zones
(Pergamon-Elsevier Science Ltd, 2020-12)
A set of fracture zones left by transform faults segmenting the active Chile Ridge that separates the Nazca and Antarctica Plates has been subducting beneath western Patagonia in the last 18 Myr. The subduction direction ...
Rock uplift at the transition from flat-slab to normal subduction: The Kenai Mountains, Southeast Alaska
(Elsevier, 2016-03)
The process of flat-slab subduction results in complex deformation of overlying forearcs, yet how this deformation decays with distance away from the zone of underthrusting is not well understood. In south central Alaska, ...
S-Local-Wave Seismic Anisotropy in the Forearc Above the Subducted Nazca Plate Between 33°S and 34.5°S
(Birkhauser Verlag Ag, 2016-04)
S-wave splitting from local earthquakes within the Nazca plate that are deeper than the interplate seismogenic zone enabled the determination of the fast velocity direction, U, and the lag time, dt, in the forearc of the ...
Density structure and geometry of the Costa Rican subduction zone from 3-D gravity modeling and local earthquake data
(2015-10-29)
The eastern part of the oceanic Cocos Plate presents a heterogeneous crustal structure due to diverse origins and ages as well as plate-hot spot interactions which originated the Cocos Ridge, a structure that converges ...
Density structure and geometry of the Costa Rican subduction zone from 3-D gravity modeling and local earthquake data
(2015-10-29)
The eastern part of the oceanic Cocos Plate presents a heterogeneous crustal structure due to diverse origins and ages as well as plate-hot spot interactions which originated the Cocos Ridge, a structure that converges ...
Neogene Patagonian magmatism between the rupture of the Farallon plate and the Chile Ridge subduction
(2021)
Based on chemical composition and timing of late Paleogene and Neogene igneous rocks in southern Patagonia, six igneous suites are identified and correlated with subduction processes during the approaching and subduction ...
Seismic structure along the South American subduction zone using satellite gravity data
(Elsevier, 2019)
Great megathrust earthquakes occur regularly along convergent plate margins such as the Nazca-South American boundary. This is shown by historical and recent ruptures along this margin. Satellite missions designed for ...