scholarly journals Pre‐salt rift morphology controls salt tectonics in the Campos Basin, offshore SE Brazil

2021 ◽  
Author(s):  
Francyne Bochi do Amarante ◽  
Christopher Aiden‐Lee Jackson ◽  
Leonardo Muniz Pichel ◽  
Claiton Marlon dos Santos Scherer ◽  
Juliano Kuchle
Keyword(s):  
Salt Tectonics ◽  
Campos Basin ◽  
Se Brazil

scholarly journals Pre-salt rift morphology controls salt tectonics in the Campos Basin, offshore SE Brazil

2021 ◽  
Author(s):  
Francyne B. Amarante ◽  
Christopher A-L. Jackson ◽  
Leonardo M. Pichel ◽  
Claiton M. S. Scherer ◽  
Juliano Kuchle
Keyword(s):  
Hydrocarbon Exploration ◽  
Passive Margin ◽  
Salt Tectonics ◽  
Borehole Data ◽  
Temporal And Spatial Distribution ◽  
South Central ◽  
Campos Basin ◽  
Se Brazil ◽  
Gravity Driven ◽  
Base Salt

<p>Salt-bearing passive margin basins offshore SE Brazil have been and remain attractive for hydrocarbon exploration and production. In the Campos Basin, major reservoir types include post-salt turbidites, which are located in structural traps related to thin-skinned faulting above salt anticlines and rollers. Classic models of gravity-driven salt tectonics commonly depict kinematically linked zones of deformation, characterised by updip extension and downdip contraction, separated by a weakly deformed zone associated with downdip translation above a relatively smooth base-salt surface. We use 2D and 3D seismic reflection and borehole data from the south-central Campos Basin to show that this does not adequately capture the styles of salt-detached gravity-driven deformation above relict, rift-related relief. The base-salt surface is composed of elongated, broadly seaward-dipping ramps with structural relief reaching c. 2 km. These ramps define the boundary between the External High and the External Low, basement structures related to the rift tectonics. Local deformation associated with the base-salt ramps can overprint and/or influence regional, margin-scale patterns of deformation producing kinematically-variable and multiphase salt deformation. We define three domains of thin-skinned deformation: an updip extensional domain, subdivided into subdomains E1 and E2, an intermediate multiphase domain and a downdip contractional domain. The multiphase domain is composed of three types of salt structures with a hybrid extensional-contractional origin and evolution. These are: (i) contractional anticlines that were subjected to later extension and normal faulting; (ii) diapirs with passive and active growth later subjected to regional extension, developing landward-dipping normal faults on the landward flank; and, lastly, (iii) an extensional diapir that was subsequently squeezed. We argue that this multiphase style of deformation occurs as a consequence of base-salt geometry and relief creating local variations of salt flow that localize extension at the top and along the ramps, and contraction at the base. Translation and extension of salt and its overburden across major base-salt ramps resulted in three ramp syncline basins northeast of the study area, partially bounded by salt-detached listric faults. The temporal and spatial distribution and evolution of these and other key salt and overburden structures, and their relationship to base-salt relief, suggest 30 to 60 km of horizontal gravity-driven translation of salt and overburden.</p>

scholarly journals Pre-salt rift morphology controls salt tectonics in the Campos Basin, offshore SE Brazil

2021 ◽  
Author(s):  
Francyne Amarante ◽  
Christopher Jackson ◽  
Leonardo Pichel ◽  
Claiton Scherer ◽  
Juliano Kuchle
Keyword(s):  
Salt Tectonics ◽  
Campos Basin ◽  
Se Brazil

scholarly journals Improved epicentral relocation in the offshore Campos basin, SE Brazil, with the RSTT 3D model

2018 ◽  
Vol 85 ◽  
pp. 121-125 ◽  
Author(s):  
Felipe dos Anjos Neves ◽  
Marcelo Assumpção ◽  
João Carlos Dourado ◽  
Frank Le Diagon ◽  
Antonio Ortolan
Keyword(s):  
3D Model ◽  
Campos Basin ◽  
Se Brazil

Geometric characterization of igneous intrusions: 3-D seismic insights from the Campos Basin, SE Brazil

2019 ◽  
Vol 102 ◽  
pp. 725-739 ◽  
Author(s):  
Ulisses Miguel da Costa Correia ◽  
Bruno César Zanardo Honório ◽  
Michelle Chaves Kuroda ◽  
Leandro Hartleben Melani ◽  
Alexandre Campane Vidal
Keyword(s):  
Geometric Characterization ◽  
Campos Basin ◽  
Igneous Intrusions ◽  
Se Brazil

Biofaciological zonation of benthic foraminifera of the continental shelf of Campos Basin, SE Brazil

2015 ◽  
Vol 377 ◽  
pp. 18-27 ◽  
Author(s):  
Fabiana Silva Vieira ◽  
Eduardo Apostolos Machado Koutsoukos ◽  
Altair Jesus Machado ◽  
Mário André Trindade Dantas
Keyword(s):  
Continental Shelf ◽  
Benthic Foraminifera ◽  
Campos Basin ◽  
Se Brazil

Restoration in plan view of faulted Upper Cretaceous and Oligocene horizons and its bearing on the history of salt tectonics in the Campos Basin (Brazil)

1993 ◽  
Vol 228 (3-4) ◽  
pp. 435-445 ◽  
Author(s):  
D. Rouby ◽  
P.R. Cobbold ◽  
P. Szatmari ◽  
S. Demercian ◽  
D. Coelho ◽  
...  
Keyword(s):  
Upper Cretaceous ◽  
Salt Tectonics ◽  
Plan View ◽  
Campos Basin ◽  
History Of
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