Abstract
Prior to extension of the lithosphere in the Eurasia Basin, the Yermak Plateau was an element of the Eurasian Arctic margin. Extension of the Barents Sea shelf culminated gradually in rifting of the continental crust with separation of this block from the continent during Chrons C25r‒C26n (57.656‒59.237 Ma ago) and emplacement of numerous basic dikes, which could be responsible for the formation of high-amplitude magnetic anomalies on the Yermak Plateau. The investigation included reconstruction of axes in the breakup zones along peripheral continental fragments of Spitsbergen with determination of the Euler poles and angles of rotation, which describe the kinematics of this process. It is revealed that the difference between depths of conjugate isobaths can be as large as many tens of meters, which reflects the nonuniformly scaled slide of peripheral areas of the continental crust along the plane of the crustal-penetrating fault and, correspondingly, their different subsidence during rifting.
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Original Russian Text © Al.A. Schreider, A.A. Schreider, A.E. Sazhneva, V.A. Sychev, O.A. Zuev, 2016, published in Okeanologiya, 2016, Vol. 56, No. 5, pp. 791–803.
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Schreider, A.A., Schreider, A.A., Sazhneva, A.E. et al. Kinematics of the bottom of the Eurasia Basin near the Spitsbergen domain. Oceanology 56, 721–732 (2016). https://doi.org/10.1134/S000143701604010X
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DOI: https://doi.org/10.1134/S000143701604010X