Structural-kinematic formation conditions of the Dudergof structure development (south-east margin of the Baltic shield)

Известия высших учебных заведений: Геология и разведка

S. Yu. Kolodyazhnyi¹ 

[1] Geological institute of Russian academy of sciences;

关键词: intraplate tectonics;    geodynamic;    glaciotectonic;    strike-sleep shear zone;    kinematics;    structural paragenesis;    east-european platform;    dudergof structure;   

DOI  :  

来源: DOAJ

【 摘 要 】

Dudergof heights and deformed Paleozoic cover rocks spatially related to them are located to the South of Saint-Petersburg within Baltic-Ladoga monocline. These elevations make up the straight forms of relief and correspond to the cores of anticlines which are often examined as a glaciotectonic morphostructures. Structural researches show that Dudergof structure is spatially and genetically related to the intersection joint of tectonic zones oriented in East-North-East and South-North directions. It had been formed for a long time, probably, since the Late Caledonian time up to the neotectonic activation stage. Deformations developed in the conditions of the reverse - strike slip mode and periodic appearance of kinematic inversions. The horizontal compression was oriented in North-West direction on certain stages, and in North-East direction - on the others. In the development of the Dudergof structure glaciotectonic factor had a second-rate significance giving rise to the appearance of the minor south-vergent thrusts.

【 授权许可】

Unknown