| Abstract: | ![]()
The location of the regions with maximum subsidence within the Siberian platform and the age volumes of the structural stages have been determined in relation to the location and periods of development of the adjacent geosynclines. The western and eastern parts of the platform differ in the character of the structures and magmatism, in the volume and age of the structural stages, as well as in the asynchronism of the main tectonic stages, which is connected with the boundary location of the platform between the Atlantic and Pacific Ocean segments of the earth's crust. The Siberian platform sharply differs from other ancient platforms of the northern hemisphere by the intensity of magmatism and style of tectonic deformation in the Meso-Cenozoic, and it is similar in this respect to the southern ancient platforms. The subcrustal processes in the adjacent geosynclines have played a leading role in the development of the platform structure; but the release of the stresses during the epochs of the magmatism and rift formation took place directly on the platform itself. |
