KINEMATICS OF RECENT TECTONIC MOTIONS IN THE EAST OF THE MONGOL-OKHOTSK FOLD BELT
V.S. Zhizherin, M.A. Serov
Institute of Geology and Natural Management, Far Eastern Branch of the Russian Academy of Sciences, Relochnyi per. 1, Blagoveshchensk, 675000, Russia
Keywords: Modern geodynamics, GPS geodesy, crustal deformations, Mongol-Okhotsk Fold Belt
Abstract
We present the first data of GPS measurements on recent motions in the east of the Mongol-Okhotsk Fold Belt. Processing of GPS data yielded a vector field of the velocities of observation point displacements in the geodynamic network of the Upper Amur region. Comprehensive analysis of geological and geophysical data and the estimated velocities of site displacements in this network have shown kinematic heterogeneity of the present-day Mongol-Okhotsk Fold Belt and an intricate deformation pattern there. The tectonic regime within the belt permits considering it a buffer or transit zone, where tectonic stresses arise as a result of the different kinematics of the surrounding tectonic structures.
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