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Stephan Mueller Special Publication Series An open-access serial publication for refereed proceedings and special publications
Stephan Mueller Spec. Publ. Ser., 4, 65-70, 2009
https://doi.org/10.5194/smsps-4-65-2009
© European Geosciences Union 2009
 
17 Sep 2009
Multi-phase tectonic structures in the collision zone of the Kolyma-Omolon microcontinent and the eastern margin of the North Asian craton, Northeastern Russia
A. V. Prokopiev and V. S. Oxman Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russia
Abstract. The sequence of formation of structures is established in the zone of junction of the eastern margin of the North Asian craton and the northeastern flank of the Kolyma-Omolon microcontinent, in the area of bend of the Kolyma structural loop. Detailed structural studies revealed two phases in the formation of Mesozoic structures – an early thrust phase and a late strike-slip phase. Structures formed during each of the phases are described. Thrust structures are represented by the Setakchan nappe on which the minimum amount of horizontal displacement is estimated at 13–15 km. Later superposed left-lateral strike-slip faults have a north strike. Formation of these latter structures occurred during the second phase of collision between the Kolyma-Omolon microcontinent and the eastern margin of the North Asian craton.

Citation: Prokopiev, A. V. and Oxman, V. S.: Multi-phase tectonic structures in the collision zone of the Kolyma-Omolon microcontinent and the eastern margin of the North Asian craton, Northeastern Russia, Stephan Mueller Spec. Publ. Ser., 4, 65-70, https://doi.org/10.5194/smsps-4-65-2009, 2009.
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