Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening - Archive ouverte HAL Access content directly
Journal Articles Terra Nova Year : 2018

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

(1, 2, 3) , (2) , (2) , , , ,
1
2
3
Néstor Bolatti
  • Function : Author
Pedro Kress
  • Function : Author
Ricardo Gerster
  • Function : Author
Victor Ramos
  • Function : Author
  • PersonId : 942723

Abstract

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.
Fichier principal
Vignette du fichier
Multistage Rifting Evolution of the Colorado Basin .pdf (3.74 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-01950210 , version 1 (10-12-2018)

Identifiers

Cite

Juan Pablo Lovecchio, Sébastien Rohais, Philippe Joseph, Néstor Bolatti, Pedro Kress, et al.. Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening. Terra Nova, 2018, 30 (5), pp.359-368. ⟨10.1111/ter.12351⟩. ⟨hal-01950210⟩

Collections

IFP
40 View
130 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More