Geophysical evidence of pre-sag rifting and post-rifting fault reactivation  in the Parnaíba basin, Brazil

de Castro, David Lopes; Bezerra, Francisco Hilário; Fuck, Reinhardt Adolfo; Vidotti, Roberta Mary

doi:https://doi.org/10.5194/se-7-529-2016

Articles | Volume 7, issue 2

https://doi.org/10.5194/se-7-529-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/se-7-529-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 7, issue 2

Research article

|

11 Apr 2016

Research article |

| 11 Apr 2016

Geophysical evidence of pre-sag rifting and post-rifting fault reactivation in the Parnaíba basin, Brazil

David Lopes de Castro, Francisco Hilário Bezerra, Reinhardt Adolfo Fuck, and Roberta Mary Vidotti

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Final revised paper (published on 11 Apr 2016)
Preprint (discussion started on 29 Jan 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of ‘Geophysical evidence of pre-sag rifting and post-rifting fault reactivation in the Parnaiba basin, Brazil’ by De Castro et al. 2016, submitted to Solid Earth.', Anonymous Referee #1, 11 Feb 2016
- AC1: 'Revision Notes', David De Castro, 08 Mar 2016
RC2: 'Anonymous referee #2', Anonymous Referee #2, 01 Mar 2016
- AC2: 'Revision Notes', David De Castro, 15 Mar 2016

Short summary

We combine new seismic data and well logs with airborne gravity and magnetic data to reveal the internal architecture of the Parnaíba basin. This Phanerozoic sedimentary basin overlies a large region of Precambrian crustal blocks in the South American platform before the break-up of the West Gondwana in Early Cretaceous. The tectonic evolution of this important cratonic basin involved a complex rifting phase followed by a long period of sag subsidence, with multiple fault reactivation.