Home – Home – Jornals – Russian Geology and Geophysics 2002 number 6

Geodetic surveys, especially repeated levelling carried out for the first time in the territory of the Altai-Sayan province through the recent decades, have yielded a cartographic model of ongoing vertical movements of the Earth's surface. The numerical parameters of the model were obtained from the equation of levelling network consisting of closed polygons and isolated lines, about 10,000 km of total length.
The model reflects regional-scale regular distribution of the rates of vertical movements. According to this regularity, the Biya-Katun', Barnaul, and Mras blocks are stable, while the background ongoing vertical movements in the province are regional-scale doming south of the Barnaul-Biya-Katun' stable block and subsidence of the province's north-western part north of the stable zone. Doming is accompanied by local but often considerable subsidence which provides further deepening of intermountain depressions.
Analysis of the relationship between active and neotectonic structures revealed regions in which the ongoing movements are conformal to the evolution trends of the earlier neotectonic stage and those in which they are different. The obtained model of ongoing vertical movements of the Earth's surface was also used to detect zones of active faulting.