Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes
- Autores
- Torres Carbonell, Pablo Juan; Rodríguez Arias, Leonardo; Atencio, Mario R.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Published balanced structural interpretations of the Fuegian thrust-fold belt (southernmost Andes) fail to address aspects such as basement shortening in the thrust-fold belt or its structural connection with the central belt of the orogen. We tackle this deficiency by constructing four serial balanced cross sections based on surface geologic information, 2-D reflection seismic lines, and well logs, which depict the first-order structural geometry and kinematics from the thrust front to the internal thrust-fold belt. The interpretation reveals three main tectonostratigraphic packages separated by major detachments: basement (Paleozoic-Upper Jurassic), Cretaceous, and Paleogene, all variably involved in thrusting along strike. Minimum shortening in the Paleogene cover ranges between 16% and 43%, and significant style changes are observed across and along the thrust wedge. We show that basement thrust sheets have a major role in the construction of the thrust-fold belt; some of them were emplaced below the thrust front during late Oligocene or early Miocene times. The kinematic evolution of the thrust-fold belt indicates that the active detachments depended on the existence of high pore pressure to propagate forward. Our model shows that this pore pressure buildup was controlled by overburden, mean rock impermeability, and strain rate; the variable interaction among these factors controlled the propagation and style of the thrust wedge.
Fil: Torres Carbonell, Pablo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Rodríguez Arias, Leonardo. Ypf S. A.; Argentina
Fil: Atencio, Mario R.. Ypf S. A.; Argentina - Materia
-
AUSTRAL-MAGALLANES BASIN
BASEMENT THRUST SHEET
FUEGIAN ANDES
OVERPRESSURED DETACHMENT
SHORTENING
STRUCTURAL STYLE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63344
Ver los metadatos del registro completo
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spelling |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost AndesTorres Carbonell, Pablo JuanRodríguez Arias, LeonardoAtencio, Mario R.AUSTRAL-MAGALLANES BASINBASEMENT THRUST SHEETFUEGIAN ANDESOVERPRESSURED DETACHMENTSHORTENINGSTRUCTURAL STYLEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Published balanced structural interpretations of the Fuegian thrust-fold belt (southernmost Andes) fail to address aspects such as basement shortening in the thrust-fold belt or its structural connection with the central belt of the orogen. We tackle this deficiency by constructing four serial balanced cross sections based on surface geologic information, 2-D reflection seismic lines, and well logs, which depict the first-order structural geometry and kinematics from the thrust front to the internal thrust-fold belt. The interpretation reveals three main tectonostratigraphic packages separated by major detachments: basement (Paleozoic-Upper Jurassic), Cretaceous, and Paleogene, all variably involved in thrusting along strike. Minimum shortening in the Paleogene cover ranges between 16% and 43%, and significant style changes are observed across and along the thrust wedge. We show that basement thrust sheets have a major role in the construction of the thrust-fold belt; some of them were emplaced below the thrust front during late Oligocene or early Miocene times. The kinematic evolution of the thrust-fold belt indicates that the active detachments depended on the existence of high pore pressure to propagate forward. Our model shows that this pore pressure buildup was controlled by overburden, mean rock impermeability, and strain rate; the variable interaction among these factors controlled the propagation and style of the thrust wedge.Fil: Torres Carbonell, Pablo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Rodríguez Arias, Leonardo. Ypf S. A.; ArgentinaFil: Atencio, Mario R.. Ypf S. A.; ArgentinaAmerican Geophysical Union2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63344Torres Carbonell, Pablo Juan; Rodríguez Arias, Leonardo; Atencio, Mario R.; Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes; American Geophysical Union; Tectonics; 36; 1; 1-2017; 33-500278-7407CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/2016TC004349info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2016TC004349info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:33Zoai:ri.conicet.gov.ar:11336/63344instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:09:34.001CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
title |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
spellingShingle |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes Torres Carbonell, Pablo Juan AUSTRAL-MAGALLANES BASIN BASEMENT THRUST SHEET FUEGIAN ANDES OVERPRESSURED DETACHMENT SHORTENING STRUCTURAL STYLE |
title_short |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
title_full |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
title_fullStr |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
title_full_unstemmed |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
title_sort |
Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes |
dc.creator.none.fl_str_mv |
Torres Carbonell, Pablo Juan Rodríguez Arias, Leonardo Atencio, Mario R. |
author |
Torres Carbonell, Pablo Juan |
author_facet |
Torres Carbonell, Pablo Juan Rodríguez Arias, Leonardo Atencio, Mario R. |
author_role |
author |
author2 |
Rodríguez Arias, Leonardo Atencio, Mario R. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
AUSTRAL-MAGALLANES BASIN BASEMENT THRUST SHEET FUEGIAN ANDES OVERPRESSURED DETACHMENT SHORTENING STRUCTURAL STYLE |
topic |
AUSTRAL-MAGALLANES BASIN BASEMENT THRUST SHEET FUEGIAN ANDES OVERPRESSURED DETACHMENT SHORTENING STRUCTURAL STYLE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Published balanced structural interpretations of the Fuegian thrust-fold belt (southernmost Andes) fail to address aspects such as basement shortening in the thrust-fold belt or its structural connection with the central belt of the orogen. We tackle this deficiency by constructing four serial balanced cross sections based on surface geologic information, 2-D reflection seismic lines, and well logs, which depict the first-order structural geometry and kinematics from the thrust front to the internal thrust-fold belt. The interpretation reveals three main tectonostratigraphic packages separated by major detachments: basement (Paleozoic-Upper Jurassic), Cretaceous, and Paleogene, all variably involved in thrusting along strike. Minimum shortening in the Paleogene cover ranges between 16% and 43%, and significant style changes are observed across and along the thrust wedge. We show that basement thrust sheets have a major role in the construction of the thrust-fold belt; some of them were emplaced below the thrust front during late Oligocene or early Miocene times. The kinematic evolution of the thrust-fold belt indicates that the active detachments depended on the existence of high pore pressure to propagate forward. Our model shows that this pore pressure buildup was controlled by overburden, mean rock impermeability, and strain rate; the variable interaction among these factors controlled the propagation and style of the thrust wedge. Fil: Torres Carbonell, Pablo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Rodríguez Arias, Leonardo. Ypf S. A.; Argentina Fil: Atencio, Mario R.. Ypf S. A.; Argentina |
description |
Published balanced structural interpretations of the Fuegian thrust-fold belt (southernmost Andes) fail to address aspects such as basement shortening in the thrust-fold belt or its structural connection with the central belt of the orogen. We tackle this deficiency by constructing four serial balanced cross sections based on surface geologic information, 2-D reflection seismic lines, and well logs, which depict the first-order structural geometry and kinematics from the thrust front to the internal thrust-fold belt. The interpretation reveals three main tectonostratigraphic packages separated by major detachments: basement (Paleozoic-Upper Jurassic), Cretaceous, and Paleogene, all variably involved in thrusting along strike. Minimum shortening in the Paleogene cover ranges between 16% and 43%, and significant style changes are observed across and along the thrust wedge. We show that basement thrust sheets have a major role in the construction of the thrust-fold belt; some of them were emplaced below the thrust front during late Oligocene or early Miocene times. The kinematic evolution of the thrust-fold belt indicates that the active detachments depended on the existence of high pore pressure to propagate forward. Our model shows that this pore pressure buildup was controlled by overburden, mean rock impermeability, and strain rate; the variable interaction among these factors controlled the propagation and style of the thrust wedge. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/63344 Torres Carbonell, Pablo Juan; Rodríguez Arias, Leonardo; Atencio, Mario R.; Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes; American Geophysical Union; Tectonics; 36; 1; 1-2017; 33-50 0278-7407 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/63344 |
identifier_str_mv |
Torres Carbonell, Pablo Juan; Rodríguez Arias, Leonardo; Atencio, Mario R.; Geometry and kinematics of the Fuegian thrust-fold belt, southernmost Andes; American Geophysical Union; Tectonics; 36; 1; 1-2017; 33-50 0278-7407 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2016TC004349 info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2016TC004349 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Geophysical Union |
publisher.none.fl_str_mv |
American Geophysical Union |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842270086211043328 |
score |
13.13397 |