Abstract
A new map of the axes of linear magnetic anomalies for eastern regions of the Eurasian Basin has been compiled. Based on the results of Russian geomagnetic surveys, paleoanomaly C25 was distinguished here for the first time, and the transition from rifting to spreading has been dated to the chron interval of С25r–С26n (57.656–59.237 Ma ago). The axis of the zone of splitting of marginal continental fragments of the Lomonosov Ridge from the Siberian shelf has been reconstructed. The Euler poles and angles of rotation that describe the splitting kinematics have been determined for the first time, as well as noncoincidence of conjugate isobaths related to sliding of peripheral continental crust areas along the lithospheric thrust plane.
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