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Model of the separation of the Marvin Spur from the Lomonosov Ridge in the Arctic Ocean

  • Marine Geology
  • Published:
Oceanology Aims and scope

Abstract

The axes of the zones of the separation of the peripheral continental fragments of the Lomonosov Ridge (the Marvin Spur and the local block of the Alpha Ridge) from its main body in the part of the Makarov Basin near Greenland are restored. The Euler poles and the angles of rotation describing the separation process are determined. The depths of the conjugate isobaths are found to be different by hundreds of meters. This circumstance most likely reflects the fact of the different scale sliding of the peripheral areas of the continental crust from the main body of the Lomonosov Ridge down the lithospheric fault plane (and thereby the different scale dip during the separation) according to the modified B. Wernike model presented here. The primary bottom topography that existed before the separation of the sliding fragments from the ridge are restored based on the reconstruction. For the case of the part of the Lomonosov Ridge near Greenland, it is established that the initially peripheral sections from the part of the Lomonosov Ridge near Greenland towered over the main surface of the Lomonosov Ridge approximately by half a kilometer and higher.

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  1. OOO NIIGazekonomika, Moscow, Russia

    Al. A. Schreider

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  1. Al. A. Schreider
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Correspondence to Al. A. Schreider.

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Original Russian Text © Al.A. Schreider, 2014, published in Okeanologiya, 2014, Vol. 54, No. 4, pp. 530–537.

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Schreider, A.A. Model of the separation of the Marvin Spur from the Lomonosov Ridge in the Arctic Ocean. Oceanology 54, 490–496 (2014). https://doi.org/10.1134/S0001437014040110

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  • DOI: https://doi.org/10.1134/S0001437014040110

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