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Age of the Floors of the Protector and Dove Basins (Scotia Sea)

  • Marine Geology
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Oceanology Aims and scope

Abstract

The tectonic evolution of the transition zone from the Pacific Ocean to the Atlantic Ocean is closely linked with the destruction of the American–Antarctic continental bridge in the Scotia Sea. The western segment of the bridge combines the Terror, Pirie, and Bruce banks, as well as the Protector and Dove basins between them. Modeling—primarily based on original geological and geophysical materials—of linear magnetic anomalies and calculation of the floor kinematics in these basins have made it possible for the first time to reveal that the collapse of the western segment of the American–Antarctic continental bridge occurred 18–25 Ma ago via a two-stage separation of the Pirie Rise from the Bruce Rise with the formation of the Dove Basin and a two stage separation of the Terror Rise from the Pirie Rise with the formation of the Protector Basin.

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Authors and Affiliations

  1. LLC Scientific Research Institute of Gas Industry Economics and Administration, Moscow, 105066, Russia

    Al. A. Schreider

  2. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, 117997, Russia

    A. A. Schreider, A. E. Sazhneva & E. I. Evsenko

  3. University of Granada, Granada, 18010, Spain

    J. Galindo-Zaldivar

  4. Andalusian Earth Sciences Institute, Granada, 18100, Spain

    A. Maldonado

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  1. Al. A. Schreider
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  2. A. A. Schreider
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  3. J. Galindo-Zaldivar
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  4. A. Maldonado
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  5. A. E. Sazhneva
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  6. E. I. Evsenko
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Correspondence to Al. A. Schreider.

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Original Russian Text © Al.A. Schreider, A.A. Schreider, J. Galindo-Zaldivar, A. Maldonado, A.E. Sazhneva, E.I. Evsenko, 2018, published in Okeanologiya, 2018, Vol. 58, No. 3, pp. 476–487.

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Schreider, A.A., Schreider, A.A., Galindo-Zaldivar, J. et al. Age of the Floors of the Protector and Dove Basins (Scotia Sea). Oceanology 58, 447–458 (2018). https://doi.org/10.1134/S0001437018030177

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