Artículo
10Be surface exposure dating reveals unexpected high deformation rates in the central Andean wedge interior
Garcia Morabito, Ezequiel
; Terrizzano, Carla Marina
; Zech, Roland; Yamin, Marcela Gladys; Wüthrich, Lorenz; Christl, Marcus; Ramos, Victor Alberto
; Haghipour, Negar; Cortes, Jose Maria
Fecha de publicación:
01/2021
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Terra Nova (print)
ISSN:
0954-4879
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Understanding deformation associated with active thrust wedges is essential to evaluate seismic hazards. In this study, we investigate the spatial distribution, timing, and rates of deformation across the central Andean backarc of Argentina, where deformation and shortening have been assumed to occur within a narrow wedge-front zone. The combined results of our geomorphic mapping, topographic surveying, and 10Be exposure dating demonstrate that fault activity related to the growth of the Andean orogenic wedge is not only limited to a narrow thrust front zone but also occurs in the Andean wedge interior. There, internal structures with deformation rates of ca. 1.3 mm/year have been active during the last ~140 ka. Widely distributed deformation implies that seismic hazards may have been underestimated in the internal part of the Andean orogen.
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Articulos(IDEAN)
Articulos de INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Articulos de INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Articulos(IEGEBA)
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos(IIDYPCA)
Articulos de INST. DE INVESTIGACIONES EN DIVERSIDAD CULTURAL Y PROCESOS DE CAMBIO
Articulos de INST. DE INVESTIGACIONES EN DIVERSIDAD CULTURAL Y PROCESOS DE CAMBIO
Citación
Garcia Morabito, Ezequiel; Terrizzano, Carla Marina; Zech, Roland; Yamin, Marcela Gladys; Wüthrich, Lorenz; et al.; 10Be surface exposure dating reveals unexpected high deformation rates in the central Andean wedge interior; Wiley Blackwell Publishing, Inc; Terra Nova (print); 33; 1; 1-2021; 30-45
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