Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil

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Standard

Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil. / Vasconcelos, David L.; Bezerra, Francisco H.R. ; Clausen, Ole Rønø; Medeiros, Walter E.; Castro, David L. de; Vital, Helenice; Barbosa, José A.

In: Marine and Petroleum Geology, Vol. 101, 03.2019, p. 322-333.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Vasconcelos, DL, Bezerra, FHR, Clausen, OR, Medeiros, WE, Castro, DLD, Vital, H & Barbosa, JA 2019, 'Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil', Marine and Petroleum Geology, vol. 101, pp. 322-333. https://doi.org/10.1016/j.marpetgeo.2018.12.010

APA

Vasconcelos, D. L., Bezerra, F. H. R., Clausen, O. R., Medeiros, W. E., Castro, D. L. D., Vital, H., & Barbosa, J. A. (2019). Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil. Marine and Petroleum Geology, 101, 322-333. https://doi.org/10.1016/j.marpetgeo.2018.12.010

CBE

Vasconcelos DL, Bezerra FHR, Clausen OR, Medeiros WE, Castro DLD, Vital H, Barbosa JA. 2019. Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil. Marine and Petroleum Geology. 101:322-333. https://doi.org/10.1016/j.marpetgeo.2018.12.010

MLA

Vancouver

Vasconcelos DL, Bezerra FHR, Clausen OR, Medeiros WE, Castro DLD, Vital H et al. Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil. Marine and Petroleum Geology. 2019 Mar;101:322-333. https://doi.org/10.1016/j.marpetgeo.2018.12.010

Author

Vasconcelos, David L. ; Bezerra, Francisco H.R. ; Clausen, Ole Rønø ; Medeiros, Walter E. ; Castro, David L. de ; Vital, Helenice ; Barbosa, José A. / Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil. In: Marine and Petroleum Geology. 2019 ; Vol. 101. pp. 322-333.

Bibtex

@article{7e1e81b39a6a4c408c1cfac4d2b85380,
title = "Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil",
abstract = "Structural inheritance control of oceanic fracture zone formation by a large basement shear zone during continental breakup is still a matter of debate. In this research, we investigated the reactivation of Precambrian shear zones and their role in the formation of the Ascension and Fernando Poo fracture zones during the evolution of the South Atlantic Ocean. We used aeromagnetic and multichannel 2D seismic reflection data associated with previous geological and geophysical data to analyze how the Precambrian shear zones may have influenced the formation of oceanic fracture zones. Our results suggest that the fracture zones are extensions of the shear zones in the transition between continental and oceanic crust. The S{\~a}o Miguel do Aleixo and Pernambuco shear zones were reactivated during the Pangea breakup and acted as zones of weakness controlling the location of the Ascension and Fernando Poo fracture zones during the process of oceanic crust spreading. Our model suggests that the formation of these fracture zones influenced by the shear zones occurred in the early stages of ocean opening. It indicates that the fracture zones that formed in the late opening stages were related to the thermal subsidence stage, as suggested in previous studies.",
keywords = "Ascencion fracture zone, Continental breakup, Fernando Poo fracture zone, Oceanic fracture zone, Shear zone, Structural inheritance",
author = "Vasconcelos, {David L.} and Bezerra, {Francisco H.R.} and Clausen, {Ole R{\o}n{\o}} and Medeiros, {Walter E.} and Castro, {David L. de} and Helenice Vital and Barbosa, {Jos{\'e} A.}",
year = "2019",
month = "3",
doi = "10.1016/j.marpetgeo.2018.12.010",
language = "English",
volume = "101",
pages = "322--333",
journal = "Marine and Petroleum Geology",
issn = "0264-8172",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Influence of Precambrian shear zones on the formation of oceanic fracture zones along the continental margin of Brazil

AU - Vasconcelos, David L.

AU - Bezerra, Francisco H.R.

AU - Clausen, Ole Rønø

AU - Medeiros, Walter E.

AU - Castro, David L. de

AU - Vital, Helenice

AU - Barbosa, José A.

PY - 2019/3

Y1 - 2019/3

N2 - Structural inheritance control of oceanic fracture zone formation by a large basement shear zone during continental breakup is still a matter of debate. In this research, we investigated the reactivation of Precambrian shear zones and their role in the formation of the Ascension and Fernando Poo fracture zones during the evolution of the South Atlantic Ocean. We used aeromagnetic and multichannel 2D seismic reflection data associated with previous geological and geophysical data to analyze how the Precambrian shear zones may have influenced the formation of oceanic fracture zones. Our results suggest that the fracture zones are extensions of the shear zones in the transition between continental and oceanic crust. The São Miguel do Aleixo and Pernambuco shear zones were reactivated during the Pangea breakup and acted as zones of weakness controlling the location of the Ascension and Fernando Poo fracture zones during the process of oceanic crust spreading. Our model suggests that the formation of these fracture zones influenced by the shear zones occurred in the early stages of ocean opening. It indicates that the fracture zones that formed in the late opening stages were related to the thermal subsidence stage, as suggested in previous studies.

AB - Structural inheritance control of oceanic fracture zone formation by a large basement shear zone during continental breakup is still a matter of debate. In this research, we investigated the reactivation of Precambrian shear zones and their role in the formation of the Ascension and Fernando Poo fracture zones during the evolution of the South Atlantic Ocean. We used aeromagnetic and multichannel 2D seismic reflection data associated with previous geological and geophysical data to analyze how the Precambrian shear zones may have influenced the formation of oceanic fracture zones. Our results suggest that the fracture zones are extensions of the shear zones in the transition between continental and oceanic crust. The São Miguel do Aleixo and Pernambuco shear zones were reactivated during the Pangea breakup and acted as zones of weakness controlling the location of the Ascension and Fernando Poo fracture zones during the process of oceanic crust spreading. Our model suggests that the formation of these fracture zones influenced by the shear zones occurred in the early stages of ocean opening. It indicates that the fracture zones that formed in the late opening stages were related to the thermal subsidence stage, as suggested in previous studies.

KW - Ascencion fracture zone

KW - Continental breakup

KW - Fernando Poo fracture zone

KW - Oceanic fracture zone

KW - Shear zone

KW - Structural inheritance

U2 - 10.1016/j.marpetgeo.2018.12.010

DO - 10.1016/j.marpetgeo.2018.12.010

M3 - Journal article

VL - 101

SP - 322

EP - 333

JO - Marine and Petroleum Geology

JF - Marine and Petroleum Geology

SN - 0264-8172

ER -