Regional stratigraphy and its dependency on tectonic movements (case study: Upper Cretaceous and Paleogene stages in Western Siberia)

Scientific and Technical Challenges in the Well Drilling Progress

Podobina, V.^1

Tomsk State University, Tomsk, Russia^1

关键词: Depth variation;    First order;    Marine basins;    Second orders;    Tectonic activity;    Tectonic movements;    Upper Cretaceous;    Western siberia;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/24/1/012012/pdf
DOI  :  10.1088/1755-1315/24/1/012012

来源: IOP

【 摘 要 】

Multiscale and divergent tectonic movements have been identified in Western Siberia of which first - order movements caused transgressions and regressions, as well as the partial formation of sediments. As a result of tectonic movement direction turn, no transgression was observed in the cross-sections of Campanian and Danian central section and in the Priabonian top section. During second-order tectonic movements and undirectional transgression insignificant bed thicknesses and channels were formed. Such movements could have included different tectonic activities within the western and eastern parts of the region limited by the Koltogorsk-Urengoy Rift. Third-order tectonic movement of moderate amplitude promoted either extension, contraction or even depth variations of the marine basin itself.