Basement fabric controls rift nucleation and postrift basin inversion in the continental margin of NE Brazil

Vasconcelos, David L.; Bezerra, Francisco H.R.; Medeiros, Walter E.; Castro, David Lopes de; Clausen, Ole Rønø; Vital, Helenice; Oliveira, Roberto Gusmão de

doi:10.1016/j.tecto.2018.12.019

Cited by 34 publications

(17 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, in the Sergipe‐Alagoas Basin (Figure 1a), roughly 440 km SE of the RPB, Vasconcelos et al. (2019) also identified the maximum and minimum ages of tectonic inversion in this basin. The maximum age is inferred from the development of folds in the Riachuelo Formation (ca.…”

Section: Discussionmentioning

confidence: 63%

Tectonic inversion assessed by integration of geological and geophysical data: The intracontinental Rio do Peixe Basin, NE Brazil

et al. 2020

Self Cite

View full text Add to dashboard Cite

Common basin models assume that the post‐rift tectonic evolution of most basins is usually associated with tectonic quiescence. However, tectonic inversion during the post‐rift phase has been proposed for several sedimentary basins worldwide, but how and why it happens is still a matter of debate, especially in intracontinental settings where the lithosphere is old and thick. Here, we use geological and geophysical data from the Rio do Peixe Basin in NE Brazil to show evidence that intracontinental sedimentary basins can be tectonically inverted by far‐field compressive stresses acting on pre‐existing weakness zones of lithospheric‐scale where stresses can concentrate and inversion can occur. Geomorphological and field data combined with seismic reflection, gravimetric and borehole data show that: (a) inversion occurred along two main Precambrian lithospheric‐scale shear zones, the Patos (E‐W trending) and Portalegre (NE‐SW trending), which had already been reactivated as basin‐bounding faults during the earlier rift stage; (b) post‐rift reactivation affected (mostly) the original master normal faults with the largest rift displacements, and locally produced new reverse faults; (c) during contraction, deformation was partitioned between fault reactivation and buckling of the incompetent sediment pushed against the hard basement; (d) all these signs of inversion have been observed in the field and can be demonstrated on seismic reflection profiles; and (e) combined gravimetric and seismic data show that the main structures of the basin were followed by an inversion. These data are consistent with the operation of WSW‐ENE horizontal maximum compressive stress as a result of combined pushes of the Mid‐Atlantic Ridge (towards the W) and the Andes (towards the E), responsible for the post‐rift oblique inversion of normal faults inherited from the rift phase and formed with vertical maximum compressive stress.

show abstract

Section: Discussionmentioning

confidence: 63%

Tectonic inversion assessed by integration of geological and geophysical data: The intracontinental Rio do Peixe Basin, NE Brazil

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…While some authors considered the basement shear zones as discrete discontinuities for both analogue models and case studies (e.g. Deng et al., 2018; Vasconcelos et al., 2019, respectively), others take into account not only the geometry but also the 3D shape of shear zones (Collanega et al., 2019; Fazlikhani et al., 2017; Osagiede et al., 2020). Collanega et al.…”

Section: Discussionmentioning

confidence: 99%

Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

2021

View full text Add to dashboard Cite

show abstract

“…Preexisting structures, along with early phases of rifting, can exert a considerable influence over the distribution of fault activity and the geometry and evolution of syn‐rift depocenters during rifting. Pervasive basement fabrics can directly control the geometry of faults and the (rift) basins they bound (e.g., Daly et al, ; Fazlikhani et al, ; Gontijo‐Pascutti et al, ; Morley et al, ; Paton & Underhill, ; Phillips et al, ; Phillips et al, ; Salomon et al, ; Skyttä et al, ; Vasconcelos et al, ). Discrete structures may also locally perturb the regional stress field, causing faults to strike oblique to the regional extension direction (Corti, ; Corti et al, ; Morley, , ; Philippon et al, ; Rotevatn et al, ; Samsu et al, ).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

et al. 2019

View full text Add to dashboard Cite

The northern North Sea rift evolved through multiple rift phases within a highly heterogeneous crystalline basement. The geometry and evolution of syn-rift depocenters during this multiphase evolution and the mechanisms and extent to which they were influenced by preexisting structural heterogeneities remain elusive, particularly at the regional scale. Using an extensive database of borehole-constrained 2D seismic reflection data, we examine how the physiography of the northern North Sea rift evolved throughout late Permian-Early Triassic (RP1) and Late Jurassic-Early Cretaceous (RP2) rift phases, and assess the influence of basement structures related to the Caledonian orogeny and subsequent Devonian extension. During RP1, the location of major depocenters, the Stord and East Shetland basins, was controlled by favorably oriented Devonian shear zones. RP2 shows a diminished influence from structural heterogeneities, activity localizes along the Viking-Sogn graben system and the East Shetland Basin, with negligible activity in the Stord Basin and Horda Platform. The Utsira High and the Devonian Lomre Shear Zone form the eastern barrier to rift activity during RP2. Toward the end of RP2, rift activity migrated northward as extension related to opening of the proto-North Atlantic becomes the dominant regional stress as rift activity in the northern North Sea decreases. Through documenting the evolving syn-rift depocenters of the northern North Sea rift, we show how structural heterogeneities and prior rift phases influence regional rift physiography and kinematics, controlling the segmentation of depocenters, as well as the locations, styles, and magnitude of fault activity and reactivation during subsequent events.

show abstract

Basement fabric controls rift nucleation and postrift basin inversion in the continental margin of NE Brazil

Cited by 34 publications

References 60 publications

Tectonic inversion assessed by integration of geological and geophysical data: The intracontinental Rio do Peixe Basin, NE Brazil

Tectonic inversion assessed by integration of geological and geophysical data: The intracontinental Rio do Peixe Basin, NE Brazil

Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

The Influence of Structural Inheritance and Multiphase Extension on Rift Development, the NorthernNorth Sea

Contact Info

Product

Resources

About