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Russian Geology and Geophysics

2004 year, number 4

RECENT VERTICAL CRUSTAL MOVEMENTS IN THE REGION OF YENISEI RIDGE

P.P. Kolmogorova and V.G. Kolmogorov*
Institute of Geophysics, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
* Siberian State Geodetic Academy, 10 ul. Plakhotnogo, Novosibirsk, 630108, Russia
Keywords: Recent land uplift, map model, correlation analysis, Yenisei Ridge
Pages: 421-429

Abstract

Distribution of recent crustal uplift at the junction of the West Siberian Plate and the Siberian craton was inferred from repeated leveling geodetic data. The new results have been applied to compile a map model of recent vertical crustal movements in the Yenisei Ridge, to correlate their rates with the modern surface topography, and to detect fault zones. Uplift rate anomalies, which represent four types of deformation, were estimated from differential rates of land uplift measured in active faults traversed by releveling profiles. The Yenisei Ridge is generally a non-deformable solid block tilted to the west towards the West Siberian Plate.