Articles | Volume 15, issue 6
https://doi.org/10.5194/se-15-683-2024
https://doi.org/10.5194/se-15-683-2024
Research article
 | 
21 Jun 2024
Research article |  | 21 Jun 2024

Magma-poor continent–ocean transition zones of the southern North Atlantic: a wide-angle seismic synthesis of a new frontier

J. Kim Welford

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Cited articles

Afilhado, A., Matias, L., Shiobara, H., Hirn, A., Mendes-Victor, L., and Shimamura, H.: From unthinned continent to ocean: the deep structure of the West Iberia passive continental margin at 38° N, Tectonophysics, 458, 9–50, 2008. a
Albers, E., Bach, W., Pérez-Gussinyé, M., McCammon, C., and Frederichs, T.: Serpentinization-Driven H2 Production From Continental Break-Up to Mid-Ocean Ridge Spreading: Unexpected High Rates at the West Iberia Margin, Front. Earth Sci., 9, 673063, https://doi.org/10.3389/feart.2021.673063, 2021. a, b
Alves, T. M. and Cunha, T. A.: A phase of transient subsidence, sediment bypass and deposition of regressive–transgressive cycles during the breakup of Iberia and Newfoundland, Earth Planet. Sc. Lett., 484, 168–183, 2018. a
Amante, C. and Eakins, B.: ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, in: NOAA Technical Memorandum NESDIS NGDC-24, National Geophysical Data Center, NOAA [data set], https://doi.org/10.7289/V5C8276M, 2009. a, b, c
Argand, E.: La tectonique de l'Asie. Conférence faite à Bruxelles, le 10 août 1922, in: Congrès géologique international (XIIIe session) – Belgique, 171–372, https://planet-terre.ens-lyon.fr/planetterre/objets/Images/Argand-tectonique-Asie/Argand-Tectonique-Asie-1924-OCR.pdf (last access: 15 June 2024), 1922. a
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I present a synthesis of the continent–ocean boundaries of the southern North Atlantic Ocean, as probed using seismic methods for rock velocity estimation, to assess their deep structures from the crust to the upper mantle and to discuss how they were formed. With this knowledge, it is possible to start evaluating these regions of the Earth for their capacity to produce hydrogen and critical minerals and to store excess carbon dioxide, all with the goal of greening our economy.