Influence of the Romanche Fracture Zone on the tectono-depositional evolution of the Barreirinhas Basin, Brazilian Equatorial Margin
DOI:
https://doi.org/10.11606/issn.2316-9095.v26-239730Keywords:
Transtensional Tectonics, Seismic Stratigraphy, Pull-apart Basin, Flower StructureAbstract
The Brazilian Equatorial Margin (BEM) has emerged as an area of significant scientific and economic interest due to its high petroleum potential, evidenced by major discoveries along conjugate margins of the Equatorial Atlantic. This study investigates the influence of the Romanche Fracture Zone (RFZ) on the tectono-sedimentary evolution of the Barreirinhas Basin, located in the central sector of the BEM. Based on integrated analysis of five seismic sections and exploratory well data, structures typical of transtensional environments were identified, including subvertical listric normal faults, and negative flower structures, affecting both the basement and overlying sedimentary sequences. These features demonstrate strong tectonic control by the RFZ over the morphology of the continental shelf, slope, and the internal compartmentalization of the rift and drift sequences. The evolution of the Barreirinhas Basin reflects a complex interaction between oblique rifting, strike-slip regimes, and later tectonic reactivations, classifying it as a pull-apart basin. The current configuration of the margin, marked by distinct structural segmentations, underscores the fundamental role of oceanic fracture zones in the genesis and development of basins along the BEM. The results presented contribute to a better understanding of the structural controls on petroleum systems in the equatorial margin and highlight the importance of future studies involving structural modeling and three-dimensional geophysical characterization.
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References
Almeida Jr, M. M. (2018). Estudo tectonossedimentar da porção emersa da Bacia de Barreirinhas com base em dados geofísicos (RN/Brasil). Trabalho de Conclusão de Curso. Natal: Universidade Federal do Rio Grande do Norte - UFRN.
Antobreh, A. A., Faleide, JI., Tsikalas, F., Planke, S. (2009). Rift-shear architecture and tectonic development of the Ghana margin deduced from multichannel seismic reflection and potential field data. Marine and Petroleum Geology, 26(3), 345-368. https://doi.org/10.1016/j.marpetgeo.2008. 04.005
Azevedo, R. P., Rossetti, E. L., Nepomuceno Filho, F., Caputo, M. V. (1985). Modelamento Tectônico, origem e evolução da Bacia de Barreirinhas, Belém. II Simpósio de Geologia da Amazônia, 208-221. Pará: SBG.
Azevedo, P. R. (1991). Tectonic evolution of Brazilian equatorial continental margin basins (London/England). Thesis (Ph.D.). London: Imperial College, University of London. Basile, C. (2015). Transform continental margins; part 1 concepts and model. Tectonophysics, 661, 1-10. https://doi.org/10.1016/j.tecto.2015.08.034
Bezerra, F. H., de Castro, D. L., Maia, R . P., Sousa, M. O. L., Moura-Lima, E. N., Rossetti, D. F., Bertotti, G., Souza, Z. S., Nogueira, F. C. C. (2020). Postrift stress field inversion in the Potiguar Basin, Brazil – Implications for petroleum systems and evolution of the equatorial margin of South America. Geologia Marinha e Petrolífera, 111, 88-104. https://doi.org/10.1016/j.marpetgeo.2019. 08.001
Bezerra, F. H., Marques, F. O., Vasconcelos, D. L., Rossetti, D. F., Tavares, A. C., Maia, R. P., de Castro, D. L., Nogueira, F. C. C., Medeiros, W. E. (2023). Review of tectonic inversion of sedimentary basins in NE and N Brazil: analysis of mechanisms, timing and effects on structures and relief. Journal of South American Earth Science, 126, 104356. https://doi.org/10.1016/j.jsames. 2023.104356
Bonatti, E. (1973). Origin and offsets of the Mid-Atlantic Ridge in Fracture Zones. Journal of Geology, 81, 144-156. https://doi.org/10.1086/627831
Davison, I., Faull, T., Greenhalgh, J., O Beirne, E., Steel, I. (2016). Transpressional structures and hydrocarbon potential along the Romanche Fracture Zone: a review. In: M. Nemčok, S. Rybár, S. T. Sinha, S. A. Hermeston, L. Ledvényiová. Transform Margins: Development, Controls and Petroleum Systems, V. 431. https://doi.org/10.1144/SP431.2
Da Silva, E. B., Ribeiro, H. J. P. S., De Souza, E. S. (2021). Exploration plays of the Potiguar Basin in deep and ultra-deep water, Brazilian Equatorial Margin. Journal of South American Earth Sciences, 111, 103454. https://doi.org/10.1016/j.jsames.2021.103454
De Castro, D. L., Oliveira, D. C., Herrera, D. R. H., Bezerra, F. H. R., Romeiro, M. A. T., Araújo, M. N. C. (2022). Crustal evolution of divergent and transform segments of the Brazilian Equatorial Margin derived from integrated geophysical data: Insights from basement grain heritage. Earth-Science Reviews, 232, 104132. https://doi.org/10.1016/j.earscirev.2022.104132
De Castro, D. L., Oliveira, D. C., Bezerra, F. H. R. (2024). Evolution of the transtensional Barreirinhas pull-apart system in the Brazilian Equatorial margin and its correlation with the African conjugate counterpart. Tectonophysics, 889, 230470. https://doi. org/10.1016/j.tecto.2024.230470
Emery, K. O., Phillips, J., Bowin, C., Mascle, J. (1975). Continental Margin off western Africa: Angola to Sierre Leone. American Association of Petroleum Geologists Bulletin, 59, 2209-2265. https://doi.org/10.1306/83D-92249-16C7-11D7-8645000102C1865D0
Farangitakis, G. P., McCaffrey, K. J. W., Willingshofer, E., Allen, M. B., Kalnins, L. M., van Hunen, J., Persaud, P., Sokoutis, D. (2021). The structural evolution of pull-apart basins in response to changes in plate motion. Basin Research, 33, 1603-1625, https://doi.org/10.1111/bre.12528
Gerya, T. V. (2013). Initiation of transform faults at rifted continental margins: 3D petrological-thermomechanical modeling and comparison to the Woodlark Basin. Petrology, 21(6), 550-560. https://doi.org/10.1134/S0869591113060039
Gibson, G. M., Totterdell, J. M., White, L. T., Mitchell, C. H., Stacey, A. R., Morse, M. P., Whitaker, A. (2013). Pre-existing basement structure and its influence on continental rifting and fracture zone development along Australia’s southern rifted margin. Journal of the Geological Society London, 170, 365-377. https://doi.org/10.1144/jgs2012-040
Gorini, M. (1977). The Tectonic Fabric of the Equatorial Atlantic and Adjoining Continental Margins (New York/ USA). Thesis (Ph.D.). New York City: Columbia University.
Heine, C., Zoethout, J., Muller, R. D. (2013). Kinematics of the South Atlantic rift. Solid Earth, 4, 215-253. https://doi.org/10.5194/se-4-215-2013
Heezen, B. C., Gerard, S. L., Tharp, M. (1964). The Vema Fracture Zone in the Equatorial Atlantic. Journal of Geophysical Research, 69, 733-739. https://doi.org/10.1029/JZ069i004p00733
Lasitha, S., Twinkle, D., Kurian, P. J., Harikrishnan, P. R. (2019). Geophysical evidence for marine prolongation of the Palghat-Cauvery shear system into the offshore Cauvery basin, Eastern continental margin of India. Journal of Asian Earth Sciences, 184, 103981. https://doi.org/10.1016/j.jseaes.2019.103981
Mascle, J., Blarez, E. (1987). Evidence for transform margin evolution from the Ivory Coast–Ghana continental margin. Nature, 326, 378-381. https://doi.org/10.1038/326378a0
Matos, R. M. D. (2000). Tectonic Evolution of the Equatorial South Atlantic. In: W. Mohriak, M. Taiwani, Eds. Atlantic Rift on Continental Margins. Geophysical Monograph Series, AGU, 115, 331-354. https://doi.org/10.1029/GM115p0331
McClay, K., Dooley, T. (1995). Analogue models of pull-apart basins. Geology, 23 (8), 711-714. https://doi.org/10.1130/0091-7613(1995)023<0711:AMOPAB>2.3.CO;2
Montenegro, C. G. L., Gomes, M. P., de Castro, D. L., Perez, Y. A., Oliveira, D. C. (2021). The Barreirinhas Basin internal architecture and the evidence of transform movements along the Romanche fracture zone, Brazilian Equatorial Margin. Journal of South American Earth Sciences, 107, 103049. https://doi.org/10.1016/j.jsames.2020.103049
Nemĉok, M., Rybár, S., Sinha, S. T., Hermeston, S. A., Ledvényiová, L. (2016). Transform margins: development, controls and petroleum systems – an introduction. Geological Society, London, Special Publications, 431, 1-38. https://doi.org/10.1144/SP431.15
Nobrega II, M. (2011). Mapeamento de Estruturas do Embasamento e seus Limites Crustais no Atlântico Equatorial, Adjacente à Margem Brasileira (RJ/Brasil). Master's (PhD). Niterói: Universidade Federal Fluminense. Available at: https://rigeo.sgb.gov.br/server/api/core/bitstreams/63ee324f-07d3-4915-a192-c3c8ce2d5bb7/content. Accessed on: May 5, 2026.
Soares Jr., A. V., Costa, J. B. S., Hasui, Y. (2008). Evolução da margem atlântica equatorial do Brasil: Três fases distensivas. Geociências, 27(4), 427-437. Available at: https://www.periodicos.rc.biblioteca.unesp.br/index.php/geociencias/article/view/3371. Accessed on: May 6, 2026.
Soares Jr., A. V., Hasui, Y., Costa, J. B. S., Machado, F. B. (2011). Evolução do rifteamento e paleogeografia da Margem Atlântica Equatorial do Brasil: Triássico ao oloceno.
Geociências, 30, 669-692. Available at: https://www.periodicos.rc.biblioteca.unesp.br/index.php/geociencias/article/view/5593. Accessed on: Mar 26, 2026.
Ramos, A. Q., d’Almeida, K. S., de Castro, N. O., Vilela, P. C., Brumati, P. A., Leggieri, R. F., da Silva, V. H. T. (2021). Zoneamento Nacional dos Recursos de Óleo e Gás (ZNMT). Empresa de Pesquisa Energética (publication on-line). Available at: https://www.epe.gov.br/pt/publicacoes-dados-abertos/publicacoes/zoneamento-nacional-de-recursos-de-oleo-e-gas. Accessed on: Feb 14, 2025.
Tavares, A. C., De Castro, D. L., Bezerra, F. H. R., Oliveira, D. C., Vannucchi, P., Iacopini, D., Jovane, L., Vital, H., (2020). The Romanche fracture zone influences the segmentation of the equatorial margin of Brazil. Journal of South American Earth Sciences, 103, 102738. https://doi.org/10.1016/j.jsames.2020.102738
Tavares, A. C., de Castro, D. L., Clausen, O. R., Bezerra, F. H. R., Sousa, M. O. L., Gomes, M. P., Vital, H., de Oliveira, D. C. (2022). Continental-scale structural heritage from rift extension to postrift inversion: Implications for the central Brazilian Equatorial Margin evolution. Tectonophysics, 837, 229446. https://doi.org/10.1016/j.tecto.2022.229446
Taylor, B., Goodliffe, A., Martinez, F., (2009). Initiation of transform faults at rifted continental margins. Comptes Rendus Geoscience, 341, 428-438. https://doi.org/10.1016/j.crte.2008.08.010
Travassos, R. M., Freitas, I. A. (2021). Bacia da Foz do Amazonas: sumário geológico e setores em oferta. Brasil. Rio de Janeiro: Anp. Available at: https://www.gov.br/anp/pt-br/rodadas-anp/oferta-permanente/opc/arquivos/sg/foz--amazonas.pdf. Accessed on: May 13, 2026.
Trosdtorf Jr., I., Zalán, P. V., Figueiredo, J. J. P., Soares, E. F. (2007). Bacia de Barreirinhas. Boletim de Geociências, Petrobras 15(2), 331-339. Available at: https://bgp.petrobras.com.br/bgp/article/view/320. Accessed on: Mar 26, 2026.
Wu, J. E., McClay, K., Whitehouse, P., Dooley, T. (2009). 4D analogue modelling of transtensional pull-apart basins. Marine and Petroleum Geology, 26, 1608-1623. https://doi.org/10.1016/ j.marpetgeo.2008.06.007
Vasconcelos, D. L., Bezerra, F. H. R., Clausen, O. R., Medeiros, W. E., de Castro, D. L., 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
Zalán, P. V., Nelson, E. P., Warme, J. E., Davis, T. L. (1985). The Piauí Basin: Rifting and wrenching in na Equatorial Atlantic transform basin. In: Biddle, K.T. & Christie-Blick, N., (Ed.), Strike-slip Deformation Basin Formation and Sedimentation, Special Publication - Society of Economic Paleontologists and Mineralogists, 37, 177-192. https://doi.org/10.2110/pec.85.37.0159
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Copyright (c) 2026 Saywry Virginio de Carvalho, David Lopes de Castro, Odilon Keller Filho, Lívian Rafaely de Santana Gomes Pinheiro, Aline Cristine Tavares

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Petrobras
Grant numbers Projetos Barreirinhas e MECO (N. 2018/00087-2 e 2023/00272-2) -
Agência Nacional do Petróleo, Gás Natural e Biocombustíveis
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Ciência sem Fronteiras

