Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes

This study focuses on the evolution of the Southern Patagonian Andes fold-thrust belt and the adjacent non-deformed foreland of the Austral basin between 49°45' and 52°00'SL. This sector involves mainly Late Cretaceous sequences of the first regressive cycle (Lago Viedma Cycle) of the Aust...

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Autores principales: Ghiglione, M.C., Suarez, F., Ambrosio, A., da Gabriela, P., Cristallini, E.O., Pizzio, M.F., Reinoso, R.M.
Formato: JOUR
Materias:
Austral basin
Cretaceous
Extensional depocenters
Foreland basin
basin evolution
Campanian
extensional tectonics
fold and thrust belt
foreland basin
numerical model
Paleogene
structural control
tectonic evolution
transition zone
uplift
Austral Basin
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v65_n1_p215_Ghiglione
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v65_n1_p215_Ghiglione
record_format dspace
spelling todo:paper_00044822_v65_n1_p215_Ghiglione2023-10-03T13:58:33Z Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes Ghiglione, M.C. Suarez, F. Ambrosio, A. da Gabriela, P. Cristallini, E.O. Pizzio, M.F. Reinoso, R.M. Austral basin Cretaceous Extensional depocenters Foreland basin basin evolution Campanian Cretaceous extensional tectonics fold and thrust belt foreland basin numerical model Paleogene structural control tectonic evolution transition zone uplift Austral Basin This study focuses on the evolution of the Southern Patagonian Andes fold-thrust belt and the adjacent non-deformed foreland of the Austral basin between 49°45' and 52°00'SL. This sector involves mainly Late Cretaceous sequences of the first regressive cycle (Lago Viedma Cycle) of the Austral basin foreland stage, and Campanian to Paleogene sequences associated with tectonic uplift of its western boundary. From a stratigraphic-sedimentary point of view, a first-order increase in the fillthickness and depth to the basement exists from north to south including the presence of deeper depositional environments in the same direction. Furthermore, there are strong along-strike variations in width and lateral position of the structural domains following the same trend. Based upon previous interpretations, is concluded that the distribution of extensional depocenters from the early extensional phase of the basin controlled these important sedimentary and structural N-S contrasts. Furthermore, in our presented model, East-west oriented transition zones are interpreted as accommodation zones separating synrift sub-basins. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v65_n1_p215_Ghiglione
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Austral basin
Cretaceous
Extensional depocenters
Foreland basin
basin evolution
Campanian
Cretaceous
extensional tectonics
fold and thrust belt
foreland basin
numerical model
Paleogene
structural control
tectonic evolution
transition zone
uplift
Austral Basin
spellingShingle Austral basin
Cretaceous
Extensional depocenters
Foreland basin
basin evolution
Campanian
Cretaceous
extensional tectonics
fold and thrust belt
foreland basin
numerical model
Paleogene
structural control
tectonic evolution
transition zone
uplift
Austral Basin
Ghiglione, M.C.
Suarez, F.
Ambrosio, A.
da Gabriela, P.
Cristallini, E.O.
Pizzio, M.F.
Reinoso, R.M.
Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
topic_facet Austral basin
Cretaceous
Extensional depocenters
Foreland basin
basin evolution
Campanian
Cretaceous
extensional tectonics
fold and thrust belt
foreland basin
numerical model
Paleogene
structural control
tectonic evolution
transition zone
uplift
Austral Basin
description This study focuses on the evolution of the Southern Patagonian Andes fold-thrust belt and the adjacent non-deformed foreland of the Austral basin between 49°45' and 52°00'SL. This sector involves mainly Late Cretaceous sequences of the first regressive cycle (Lago Viedma Cycle) of the Austral basin foreland stage, and Campanian to Paleogene sequences associated with tectonic uplift of its western boundary. From a stratigraphic-sedimentary point of view, a first-order increase in the fillthickness and depth to the basement exists from north to south including the presence of deeper depositional environments in the same direction. Furthermore, there are strong along-strike variations in width and lateral position of the structural domains following the same trend. Based upon previous interpretations, is concluded that the distribution of extensional depocenters from the early extensional phase of the basin controlled these important sedimentary and structural N-S contrasts. Furthermore, in our presented model, East-west oriented transition zones are interpreted as accommodation zones separating synrift sub-basins.
format JOUR
author Ghiglione, M.C.
Suarez, F.
Ambrosio, A.
da Gabriela, P.
Cristallini, E.O.
Pizzio, M.F.
Reinoso, R.M.
author_facet Ghiglione, M.C.
Suarez, F.
Ambrosio, A.
da Gabriela, P.
Cristallini, E.O.
Pizzio, M.F.
Reinoso, R.M.
author_sort Ghiglione, M.C.
title Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
title_short Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
title_full Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
title_fullStr Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
title_full_unstemmed Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
title_sort structure and evolution of the austral basin fold-thrust belt, southern patagonian andes
url http://hdl.handle.net/20.500.12110/paper_00044822_v65_n1_p215_Ghiglione
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