Results 41 to 50 of about 5,992 (170)

Evolving Strain Partitioning Driven by Multiple Plate Interaction—Paleotectonic Reconstruction of Northwestern South America During the Cenozoic

Tectonics, Volume 44, Issue 12, December 2025.
Abstract In Northwestern South America (NWSA) geodetic observations point to a consistent northeastward displacement of blocks, while the geological record shows a predominant shortening in NW‐SE direction. Such clear evidence of strain partitioning has been extensively studied in the context of two convergent plates, but not in complex tectonic area ...
Román González, Sabrina Metzger, Eline Le Breton, Germán Bayona, Andrés Mora, Josué Alejandro Mora‐Bohórquez, Iván Camilo Higuera, Claudio Faccenna, Onno Oncken   +8 more
wiley   +1 more source

Climate Oscillation and Fault Slip Rate Control Sediment Aggradation and Channel Morphology Along Strike‐Slip Faults

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Strike‐slip faults act as landscape change agents, offsetting rivers, driving river capture, and generating hillslope responses. In this study, inspired by the hyperarid Atacama Fault System in Chile, we use numerical models to investigate how landscapes that experience oscillatory dry and humid periods respond to strike‐slip faulting at ...
T. F. Aránguiz‐Rago, A. R. Duvall, G. E. Tucker, B. Campforts   +3 more
wiley   +1 more source

A continuous 500‐year sediment record of inundation by local and distant tsunamis in South‐Central Chile (40.1°S)

The Depositional Record, Volume 11, Issue 5, Page 1285-1310, November 2025.
Tsunami events over the past 500 years inundated Laguna Gemela West (Chile), leading to distinct sandy deposits in the lake record. This provides a complete perspective on tsunami inundation, including giant tsunamis, small local tsunamis and tsunamis that originated >100 km away from the site.
Jasper Moernaut, Evelien Boes, Daniel Melnick, Matías Carvajal, Markus Niederstätter, Sabine Schmidt, Diego Aedo, Mario Pino, Marc De Batist   +8 more
wiley   +1 more source

Evidence for Caribbean Plate Subduction Beneath the Isthmus of Panama and Implications for Subduction Initiation and the Closure of the Central American Isthmus During the Miocene

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The evolution of the Isthmus of Panama during the Miocene resulted in climatic shifts leading to global cooling, reorganization of ocean currents, and regional mass extinctions. The causes of this change in ocean circulation between ∼15 and 5 Ma have been debated, with various tectonic scenarios being proposed as explanations for this event ...
James R. Bourke, Frederik Link, Maureen D. Long, James Wright   +3 more
wiley   +1 more source

Changes in Motion of the Nazca/Farallon Plate Over the Last 34 Million Years: Implications for Flat‐Slab Subduction and the Propagation of Plate Kinematic Changes

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract A high‐resolution sequence of finite‐rotation solutions spanning the past 34 Myr for the Nazca plate relative to the Pacific, Antarctic, and South American plates shows a pattern of 1–5‐Myr‐long intervals of nearly constant plate motion mostly separated by decelerations or accelerations lasting no longer than a few hundred thousand years ...
Douglas S. Wilson, Charles DeMets
wiley   +1 more source

Revisiting the North Chile seismic gap segmentation using GPS-derived interseismic coupling [PDF]

, 2013
International audienceNo major earthquake occurred in North Chile since the 1877 M w 8.6 subduction earthquake that produced a huge tsunami. However, geodetic measurements conducted over the last decade in this area show that the upper plate is actually ...
Carrizo, D, Delorme, A, Maureira, E, Métois, Marianne, Ortega, I, Peyrat, S, Socquet, A, Valderas-Bermejo, M.-C, Vigny, C   +8 more
core   +6 more sources

Seismic Evidence for Cocos Slab Tearing and Nazca Slab Emplacement in the Southern Costa Rican Subduction Zone

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Precise position and geometry of the subducted slab are crucial for deciphering subduction zone volcanism. This is particularly important in the southern Costa Rican subduction zone, where the Cocos Ridge subducted at ∼2–3 Ma, coincident with the uplift of the Talamanca Range but later than the arc volcanism cessation (∼5–8 Ma). Here, we apply
Mingye Feng, Shengji Wei, Ling Chen, Xu Wang, Marino Protti, Lujia Feng   +5 more
wiley   +1 more source

New evidence about the subduction of the Copiap\uf2 ridge beneath South America, and its connection with the Chilean-Pampean flat slab, tracked by satellite GOCE and EGM2008 models [PDF]

, 2015
Satellite-only gravity measurements and those integrated with terrestrial observations provide global gravity field models of unprecedented precision and spatial resolution, which allow analyzing lithospheric structure allowing the analysis of the ...
Alvarez, O., Baez, W., Braitenberg, C., Bustos, E., Folguera, A., Gimenez, M., Spagnotto, S.   +6 more
core   +1 more source

Magmatism at Incipient Rift, Galapagos Triple Junction: Tapping the Off‐Axis East Pacific Rise Melting Regime

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Incipient Rift (IR) is the latest in a sequence of short‐lived rifts that form ridge‐ridge‐ridge triple junctions with the East Pacific Rise (EPR) in the Galapagos triple junction region. IR extends ∼65 km southeastward from its intersection with the EPR at 2°40′N. IR originated ∼0.4 Ma; its opening rate is ∼15 km/Myr.
Deborah K. Smith, Hans Schouten, Emily M. Klein   +2 more
wiley   +1 more source

Asperities and barriers on the seismogenic zone in North Chile: state-of-the-art after the 2007 Mw 7.7 Tocopilla earthquake inferred by GPS and InSAR data [PDF]

, 2010
The Mw 7.7 2007 November 14 earthquake had an epicentre located close to the city of Tocopilla, at the southern end of a known seismic gap in North Chile. Through modelling of Global Positioning System (GPS) and radar interferometry (InSAR) data, we show
A. Delorme, A. Nercessian, A. Socquet, Aki, Allmendinger, Altamimi, ANCORP Working Group, Angermann, Armijo, Baba, Bevis, Bevis, Bilek, Bürgmann, C. Valderas, C. Vigny, Cattin, Cavalié, Chlieh, Chlieh, Cifuentes, Comte, Comte, D. Carrizo, D. Comte, D. Remy, Delouis, Delouis, Delouis, Dorbath, Du, Engdahl, F. Bondoux, F. Ortega, Farr, Fitch, G. Gabalda, Grandin, Gutenberg, Hanssen, Harris, Hayes, Hayes, Heki, Herring, Hsu, Hyndman, I. Ortega, Igarashi, Ihmlé, J. B. de Chabalier, J. C. Ruegg, J. Campos, J. Galetzka, J. Genrich, Jonsson, Kanamori, Kelleher, Khazaradze, King, King, Klotz, Lasserre, Lay, Lohman, Loveless, M. Béjar-Pizarro, M. Olcay, M. Simons, Malgrange, Marone, Massonnet, Melbourne, Menke, Miyazaki, Mogi, Monfret, Nishenko, Norabuena, O. Charade, Okada, Oleskevich, Pacheco, Patzwahl, Perfettini, Peyrat, Pritchard, Pritchard, Pritchard, Pritchard, Puysségur, R. Armijo, Rosen, Rosenbaum, Ruegg, Ruegg, S. Barrientos, S. Bonvalot, Scholz, Scholz, Schwartz, Schwartz, Sella, Song, Suarez, Tarantola, Tichelaar, Vargas, Vigny, Wessel, Árnadóttir, Çakir   +111 more
core   +6 more sources