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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. [ABSTRACT FROM AUTHOR]

We analyze recent crustal movements, based on data of GPS measurements on the Amurian Plate and its margins. Most of the velocities were borrowed from scientific publications. Also, our new and updated data of periodic and permanent GPS observations are presented. A continuous field of strain rates has been constructed using the combined field of movement velocities. Dilatation rates and the directions and values of the main strain axes have been calculated. We have made a quantitative estimation of the maximum shear rates and their directions. Zones of background deformations in the inner part of the Amurian Plate have been revealed along with high-strain zones. Zones with intense tectonic activity, corresponding to areas of reduced lithosphere, often show manifestations of Late Cenozoic volcanism. Part of them can be interpreted as the present-day boundaries of intracontinental geoblocks and small lithospheric plates. [ABSTRACT FROM AUTHOR]