Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile

ABSTRACT A reinterpretation of the structural style on the eastern Cordillera Domeyko and the adjacent Salar de Atacama Basin reveals the existence of west-dipping, high-angle, thrust-faults extending below the Cordillera Domeyko and Cordón de Lila, resulting from inversion of Cretaceous extensional...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Muñoz,Nelson, Charrier,Reynaldo, Jordan,Teresa
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2002
Materias:	Basin evolution Thick and thin-skinned tectonics Cordillera Domeyko Cordillera de la Sal Mesozoic-Cenozoic Chilean Andes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082002000100004
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-02082002000100004
record_format	dspace
spelling	oai:scielo:S0716-020820020001000042005-11-14Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern ChileMuñoz,NelsonCharrier,ReynaldoJordan,Teresa Basin evolution Thick and thin-skinned tectonics Cordillera Domeyko Cordillera de la Sal Mesozoic-Cenozoic Chilean Andes ABSTRACT A reinterpretation of the structural style on the eastern Cordillera Domeyko and the adjacent Salar de Atacama Basin reveals the existence of west-dipping, high-angle, thrust-faults extending below the Cordillera Domeyko and Cordón de Lila, resulting from inversion of Cretaceous extensional faults, that transferred west-ward their displacement into the cover, generating fault-propagation and detachment folds. The most conspicuous of these structures is the Cordillera de la Sal. Contractional structures in the Cordillera Domeyko involved a Paleozoic crystalline, volcanic, and sedimentary, uplifted basement. Seismic reflection sections and available surface geology allows to study the interactions between development of the thick-skinned basement structures, sedimentation within the basin, and the thin-skinned deformation in the sedimentary cover. Geometry of the units in the basin continuously modified. Anticline growth above basement thrust-faults locally controlled syn-thrusting sequences, and generated progressive unconformities. Stratigraphic architecture in the basin seems to have been mainly controlled by tectonic activity. Tectonism generated accommodation space, altered base levels, and controlled source areas. The stratigraphy and geometry of the basin deposits resulted mainly from the succession of the following events: local extensional subsidence during the Early to Late Cretaceous, uplift of the Cordillera Domeyko during the latest Cretaceous to Miocene, uplift of the Puna, and subsidence probably caused by flexural response of the lithosphere during thrust-sheet loading, and sediment accumulationinfo:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Revista geológica de Chile v.29 n.1 20022002-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082002000100004en10.4067/S0716-02082002000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Basin evolution Thick and thin-skinned tectonics Cordillera Domeyko Cordillera de la Sal Mesozoic-Cenozoic Chilean Andes
spellingShingle	Basin evolution Thick and thin-skinned tectonics Cordillera Domeyko Cordillera de la Sal Mesozoic-Cenozoic Chilean Andes Muñoz,Nelson Charrier,Reynaldo Jordan,Teresa Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
description	ABSTRACT A reinterpretation of the structural style on the eastern Cordillera Domeyko and the adjacent Salar de Atacama Basin reveals the existence of west-dipping, high-angle, thrust-faults extending below the Cordillera Domeyko and Cordón de Lila, resulting from inversion of Cretaceous extensional faults, that transferred west-ward their displacement into the cover, generating fault-propagation and detachment folds. The most conspicuous of these structures is the Cordillera de la Sal. Contractional structures in the Cordillera Domeyko involved a Paleozoic crystalline, volcanic, and sedimentary, uplifted basement. Seismic reflection sections and available surface geology allows to study the interactions between development of the thick-skinned basement structures, sedimentation within the basin, and the thin-skinned deformation in the sedimentary cover. Geometry of the units in the basin continuously modified. Anticline growth above basement thrust-faults locally controlled syn-thrusting sequences, and generated progressive unconformities. Stratigraphic architecture in the basin seems to have been mainly controlled by tectonic activity. Tectonism generated accommodation space, altered base levels, and controlled source areas. The stratigraphy and geometry of the basin deposits resulted mainly from the succession of the following events: local extensional subsidence during the Early to Late Cretaceous, uplift of the Cordillera Domeyko during the latest Cretaceous to Miocene, uplift of the Puna, and subsidence probably caused by flexural response of the lithosphere during thrust-sheet loading, and sediment accumulation
author	Muñoz,Nelson Charrier,Reynaldo Jordan,Teresa
author_facet	Muñoz,Nelson Charrier,Reynaldo Jordan,Teresa
author_sort	Muñoz,Nelson
title	Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
title_short	Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
title_full	Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
title_fullStr	Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
title_full_unstemmed	Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile
title_sort	interactions between basement and cover during the evolution of the salar de atacama basin, northern chile
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082002000100004
work_keys_str_mv	AT munoznelson interactionsbetweenbasementandcoverduringtheevolutionofthesalardeatacamabasinnorthernchile AT charrierreynaldo interactionsbetweenbasementandcoverduringtheevolutionofthesalardeatacamabasinnorthernchile AT jordanteresa interactionsbetweenbasementandcoverduringtheevolutionofthesalardeatacamabasinnorthernchile
_version_	1718439411524304896

Interactions between basement and cover during the evolution of the Salar de Atacama Basin, northern Chile

Ejemplares similares