journal article Sep 19, 2018

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

Terra Nova Vol. 30 No. 5 pp. 359-368 · Wiley
View at Publisher Save 10.1111/ter.12351
Abstract
AbstractThe 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.
Topics

No keywords indexed for this article. Browse by subject →

References
47
[1]
Aldiss D. T. &Edwards E. J.(1999).The Geology of the Falkland Islands. British Geological Survey Technical Report. WC/99/10.
[4]
Crustal-scale architecture and segmentation of the Argentine margin and its conjugate off South Africa

Olav A. Blaich, Jan Inge Faleide, Filippos Tsikalas et al.

Geophysical Journal International 10.1111/j.1365-246x.2009.04171.x
[5]
2013 O. A. Blaich J. I. Faleide F. Tsikalas A. C. Gordon W. U. Mohriak W. U. Mohriak A. L. Danforth P. J. Post D. E. Brown G. C. Tari M. Nemcok S. T. Sinha Crustal‐scale architecture and segmentation of the South Atlantic volcanic margin 167 183 10.1144/sp369.22
[6]
De Wit M. J. &Ransome I. G. D.(1992).Inversion tectonics of the Cape Fold Belt Karoo and Cretaceous basins of Southern Africa Proceedings of the Conference on Inversion Tectonics of the Cape Fold Belt. Balkema Roderdam.
[8]
Delvaux D. (2001)
[9]
Dominguez F. Marchal D. Sigismondi M. Espejón C. &Vallejo E.(2011).Caracterizacion de Dominios Estructurales e Influencia de Estructuras Preexistentes en Hemigrábenes de Rift en el Sector Centro‐Norte de la Plataforma Contiental Argentina. XVIII Congreso Geologico Argentino. 2 p.
[15]
Gebhard I. (2005)
[16]
Geoffroy L. "Volcanic passive margins: Another way to break up continents" Nature Publishing Group (2015)
[17]
Gerster R. Welsink H. Ansa A. &Raggio F.(2011).Cuenca de Colorado. VIII Congreso de Exploración Y Desarrollo de Hidrocarburos Simposio Cuencas Argentinas: Visión Actual 65–80.
[20]
1983 I. Hälbich A. P. G. Söhnge I. W. Hälbich A tectogenesis of the Cape Fold Belt 165 175
[23]
Hinz K. "A hypothesis on terrestrial catastrophes_wedges of very thick oceanward dopping layers beneath Passive continental margins" Journal of Geophysical Research: Solid Earth (1981)
[24]
The Argentine continental margin north of 48°S: sedimentary successions, volcanic activity during breakup

K. Hinz, S. Neben, B. Schreckenberger et al.

Marine and Petroleum Geology 10.1016/s0264-8172(98)00060-9
[26]
Introcaso A. &Ramos V. A.(1984). La cuenca de Salado_un modelo de evolucion aulacogenica. IX Congreso Geológico Argentino. San Carlos de Bariloche 27–46.
[29]
McMillan I. K. "Foraminiferal biostratigraphy of the Barremian to Miocene rocks of the Kudu 9A‐1, 9A‐2 and 9A‐3 boreholes" Communications of the Geological Survey of Namibia (1990)
[30]
2006 A. Mosquera V. A. Ramos S. M. Kay V. A. Ramos Intraplate deformation in the Neuquén Embayment 97 123
[31]
Mosquera A. (2011)
[39]
Ramos V. A. (1996)
[43]
Uliana M. A. "Mesozoic extension and the formation of Argentina sedimentary basins" Extensional Tectonics and Stratigraphy of the North Atlantic Margin, AAPG Mem (1989)
[44]
Urien C. M. "Petroleum basins in southern South America: An overview" Petroleum Basins of South America (1995)
[46]
Yrigoyen M. R.(1975).Geologia del subsuelo y la plataforma continental. Geología de La Provincia de Buenos Aires 6th Argentinean Geological Congress Bahía Blanca.139–168.
Metrics
46
Citations
47
References
Details
Published
Sep 19, 2018
Vol/Issue
30(5)
Pages
359-368
License
View
Funding
Fundación YPF
Cite This Article
Juan Pablo Lovecchio, Sébastien Rohais, Philippe Joseph, et al. (2018). Multistage rifting evolution of the Colorado basin (offshore Argentina): Evidence for extensional settings prior to the South Atlantic opening. Terra Nova, 30(5), 359-368. https://doi.org/10.1111/ter.12351