A.P. Afanasenkov, A.V. Bordyug, A.M. Nikishin, N.V. Taninskaya, V.V. Shimansky, 
S.I. Bordunov
 
Update of paleogeography of Siberian platform North accounting for new data
DOI: 10.31087/0016-7894-2018-2-5-23

This paper discusses paleogeographic reconstructions in the northern framing of the Siberian Platform. Paleogeographic reconstructions are carried out using maximum possible amount of geological and geophysical, paleontological, biostratigraphical, sedimentological, and geochemical information. Particular attention is paid to changes in sedimentation settings in terms of the region evolution history with reference to the major tectonic events. The distinctive features of the deposits developed in the study area are identified and described. Depositional environment are established on the basis of micro-faunal and palynological analyses, paleogeographic schemes of various level of detail are prepared. Palaeozoic deposits are penetrated by the wells only in the east of the study area — within the Anabar-Khatanga Saddle. Their integrated analysis made it possible to identify lithologic and paleogeographic zones within the eastern part of the Yenisei-Khatanga Depression, and extrapolate them to the adjacent regions up to the Western Siberia. Amount of supporting information allowed working out in detail the Mesozoic deposits, both vertically and laterally. Present-day model of tectonic development of the basin is taken into account in reconstruction of paleogeographic settings. Integrated analysis made it possible to update the previous maps and schemes and to get an idea about paleogeography of this region at various levels of detail, which reflect the major stages of sedimentation and formation conditions of promising oil and gas bearing objects associated with certain paleo-environments. Understanding of the region paleogeography allows identifying the reservoir distribution patterns and, consequently, establishing the most prospective zones of possible traps development (of both structural and lithologic type).

 

Key words: paleogeography; Palaeozoic; Mesozoic; Yenisei-Khatanga depression; Taimyr orogene; Anabar-Khatanga saddle; Lena-Anabar trough; Siberian Platform.

 

For citation: Afanasenkov A.P., Bordyug A.V., Nikishin A.M., Taninskaya N.V., Shimanskii V.V., Bordunov S.I. Update of paleogeography of Siberian platform North accounting for new data. Geologiya nefti i gaza = Oil and gas geology. 2018;(2):5–23. DOI: 10.31087/0016-7894-2018-2-5-23.

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A.P. Afanasenkov

All-Russian Research Geological Oil Institute, Moscow, Russia;

Lomonosov Moscow State University, Moscow, Russia
afanasenkov@vnigni.ru

A.V. Bordyug

Russian Research Geological Oil Institute, Moscow, Russia;

avbordiug@gmail.com

A.M. Nikishin

Lomonosov Moscow State University, Moscow, Russia;

amnikishin@gmail.com

N.V. Taninskaya

Geologorazvedka, Saint-Petersburg, Russia;

tannv@yandex.ru 

 

V.V. Shimansky

Geologorazvedka, Saint-Petersburg, Russia;

shimvld@mail.ru

S.I. Bordunov

Lomonosov Moscow State University, Moscow, Russia;

sib-msu@mail.ru