Lithospheric-scale 3D model of the Southern Central Andes

Registro completo

Título

Lithospheric-scale 3D model of the Southern Central Andes

Autor(es)

Rodriguez Piceda, Constanza; Scheck Wenderoth, Magdalena; Gómez Dacal, María Laura; Bott, Judith; Prezzi, Claudia Beatriz; Strecker, Manfred

Afiliación(es) del/de los autor(es)

Rodriguez Piceda, Constanza. German Research Centre for Geosciences; Alemania
Scheck Wenderoth, Magdalena. German Research Centre for Geosciences; Alemania
Gómez Dacal, María Laura. German Research Centre for Geosciences; Alemania
Bott, Judith. German Research Centre for Geosciences; Alemania
Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Strecker, Manfred. Universitat Potsdam; Alemania

Resumen

The Central Andean orogeny is caused by the subduction of the Nazca oceanic plate beneath the South-American continental plate. In Particular, the Southern Central Andes (SCA, 27°-40°S) are characterized by a strong N-S and E-W variation in the crustal deformation style and intensity. Despite being the surface geology relatively well known, the information on the deep structure of the upper plate in terms of its thickness and density configurations is still scarcely constrained. Previous seismic studies have focused on the crustal structure of the northern part of the SCA (~27°-33°S) based upon 2D cross-sections, while 3D crustal models centred on the South-American or the Nazca Plate have been published with lower resolution. To gain insight into the present-day state of the lithosphere in the area, we derived a 3D model that is consistent with both the available geological and seismic data and with the observed gravity field. The model consists on a continental plate with sediments, a two-layer crust and the lithospheric mantle being subducted by an oceanic plate. The model extension covers an area of 700 km x 1100 km, including the orogen, the forearc and the forelands

Año de publicación

2023

Idioma

inglés

Formato (Tipo MIME)

application/zip

Clasificación temática de acuerdo a la FORD

Ciencias de la tierra y ciencias ambientales relacionadas

Condiciones de uso

Disponible en acceso abierto bajo licencia Creative Commons https://creativecommons.org/licenses/by-nc-sa/2.5/ar/

Repositorio digital

CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas

Identificador de proyecto

/ITRG 373/34-1

Identificador de proyecto

Consejo Nacional de Investigaciones Científicas y Técnicas/ITRG 373/34-1