Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening

The identification of three independent rifting events in the Colorado basin area highlights the complexity of its Mesozoic rifting history, which ended in the Early Cretaceous with the opening of the South Atlantic Ocean. A first rifting event, associated with the extensional reactivation of previo...

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Autores principales: Lovecchio, J.P., Rohais, S., Joseph, P., Bolatti, N.D., Kress, P.R., Gerster, R., Ramos, V.A.
Formato: JOUR
Materias:
basin evolution
continental breakup
Cretaceous
fold belt
Gondwana
rifting
thrust
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Colorado Basin [Argentina]
Colorado Basin [North America]
Salado Basin
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09544879_v30_n5_p359_Lovecchio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09544879_v30_n5_p359_Lovecchio
record_format dspace
spelling todo:paper_09544879_v30_n5_p359_Lovecchio2023-10-03T15:51:45Z Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening Lovecchio, J.P. Rohais, S. Joseph, P. Bolatti, N.D. Kress, P.R. Gerster, R. Ramos, V.A. basin evolution continental breakup Cretaceous fold belt Gondwana rifting thrust Argentina Atlantic Ocean Atlantic Ocean (South) Colorado Basin [Argentina] Colorado Basin [North America] Salado Basin The identification of three independent rifting events in the Colorado basin area highlights the complexity of its Mesozoic rifting history, which ended in the Early Cretaceous with the opening of the South Atlantic Ocean. A first rifting event, associated with the extensional reactivation of previously compressive thrusts of the Ventania-Cape fold belt, is transected by faults forming the main depocenters of the Colorado and possibly the adjacent Salado basin. The second and main rifting stage is correlated with the Early Jurassic Karoo rifting. In the Early Cretaceous, WNW–ESE extension produced NNE-trending landward-dipping faults, concentrated in the outer 100–200 km of the continental crust domain, possibly coeval with SDR emplacement. This is the first identification of three superimposed rifting settings in the southern South Atlantic realm and is key to understanding the complex Mesozoic breakup history of SW Gondwana. © 2018 John Wiley & Sons Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09544879_v30_n5_p359_Lovecchio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic basin evolution
continental breakup
Cretaceous
fold belt
Gondwana
rifting
thrust
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Colorado Basin [Argentina]
Colorado Basin [North America]
Salado Basin
spellingShingle basin evolution
continental breakup
Cretaceous
fold belt
Gondwana
rifting
thrust
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Colorado Basin [Argentina]
Colorado Basin [North America]
Salado Basin
Lovecchio, J.P.
Rohais, S.
Joseph, P.
Bolatti, N.D.
Kress, P.R.
Gerster, R.
Ramos, V.A.
Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
topic_facet basin evolution
continental breakup
Cretaceous
fold belt
Gondwana
rifting
thrust
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Colorado Basin [Argentina]
Colorado Basin [North America]
Salado Basin
description The identification of three independent rifting events in the Colorado basin area highlights the complexity of its Mesozoic rifting history, which ended in the Early Cretaceous with the opening of the South Atlantic Ocean. A first rifting event, associated with the extensional reactivation of previously compressive thrusts of the Ventania-Cape fold belt, is transected by faults forming the main depocenters of the Colorado and possibly the adjacent Salado basin. The second and main rifting stage is correlated with the Early Jurassic Karoo rifting. In the Early Cretaceous, WNW–ESE extension produced NNE-trending landward-dipping faults, concentrated in the outer 100–200 km of the continental crust domain, possibly coeval with SDR emplacement. This is the first identification of three superimposed rifting settings in the southern South Atlantic realm and is key to understanding the complex Mesozoic breakup history of SW Gondwana. © 2018 John Wiley & Sons Ltd
format JOUR
author Lovecchio, J.P.
Rohais, S.
Joseph, P.
Bolatti, N.D.
Kress, P.R.
Gerster, R.
Ramos, V.A.
author_facet Lovecchio, J.P.
Rohais, S.
Joseph, P.
Bolatti, N.D.
Kress, P.R.
Gerster, R.
Ramos, V.A.
author_sort Lovecchio, J.P.
title Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
title_short Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
title_full Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
title_fullStr Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
title_full_unstemmed Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening
title_sort multistage rifting evolution of the colorado basin (offshore argentina): evidence for extensional settings prior to the south atlantic opening
url http://hdl.handle.net/20.500.12110/paper_09544879_v30_n5_p359_Lovecchio
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