V.I. Shegai, A.V. Tolstikov

​

North-eastern Sakhalin Shelf: features of structural and tectonic evolution in view of new seismic data

​

DOI 10.31087/0016-7894-2022-4-39-51

​

Analysis of new seismic data showed that three stages of tectonic activity, which largely determined the current outlook of north-eastern Sakhalin and neighbouring shelf, can be identified in the Cenozoic interval of structural and tectonic evolution of Sakhalin Island. In Early Miocene stage, most of strike-slip dislocations in the north-eastern shelf of Sakhalin Island originated. It was found that configuration of strike-slip faults is radial. They take their rise at the joint of Pogranichny block of Okhotomorsky Plate (Sovgavansky/Mynginsky fault) and Khokkaido-Sakhalinsky strike-slip fault, and open in eastern and north-eastern directions. Activation of this system of strike-slip dislocations against the background of lithosphere expansion and formation of the Deryuginsky Basin situated to the east of the study area was a most likely cause of destruction of Kirinsky Paleogene mega-high and formation of Kirinsky and South Kirinsky structures there. Some of the large blocks (Nogliksky, Lopatinsky, Deryuginsky, Norsky, and Ulvinsky) move far towards the east. Judging by their current position, amplitude of the movement at that time could be hundreds of kilometers or more. Middle Miocene and Pliocene-Quaternary stages of tectogenesis are pronounced in the activity of the East Sakhalinsky strike-slip fault. Group of structures extending along the East Sakhalinsky strike-slip fault grow intensively. Synchronous evolution during Miocene and Pliocene allowed combining them into a single Odoptinsky-Schmidtovsky upstanding zone. The conclusion that Pliocene-Quaternary strike-slip activity may result in partial violation of seal above the accumulations was the important result of the studies conducted. The proximity of the East Odoptinsky strike-slip fault is supposed to be a most probable cause of gas escape from the Neptun field pools.

​

Key words: Okhotomorsky region; Sakhalin Island; pull-apart tectonics; hydrocarbon potential; oil; gas.

​

For citation: Shegai V.I., Tolstikov A.V. North-eastern Sakhalin Shelf: features of structural and tectonic evolution in view of new seismic data. Geologiya nefti i gaza. 2022;(4):39–51. DOI: 10.31087/0016-7894-2022-4-39-51. In Russ.

​

 

References

1. Timurziev A.I., Gogonenkov G.N. Latest strike-slip tectonics in sedimentary basins: from geopetroleum zoning of subsurface to the technology for exploration and prospecting of deep-seated hydrocarbon fields. Vesti gazovoi nauki. 2012;9(1):68–85. In Russ.
2. Kharakhinov V.V. Sedimentary (oil and gas bearing and potentially oil and gas bearing) systems of the sea of Okhotsk region: geodynamic arrangement. Geologiya nefti i gaza. 2020;(1):81–99. DOI: 10.31087/0016-7894-2020-1-81-99. In Russ.
3. Shegai V.I., Tolstikov A.V. Upper Miocene and Pliocene deposits of north-eastern shelf of Sakhalin Island: new seismic data on structure and petroleum potential. Geologiya nefti i gaza. 2022;(3):67–83. DOI: 10.31087/0016-7894-2022-3-67-83. In Russ.

4. Grannik V.M. Khokkaido-Sakhalinskaya skladchataya oblast': geologicheskoe stroenie i razvitie [Khokkaido-Sakhalin Folded Region: geological structure and evolution]. In: Sovremennoe sostoyanie nauk o Zemle : mat-ly mezhdunar. konf-tsii (Moscow, 1–4 February 2011). Moscow: 2011. pp. 494–498. In Russ.
5. Merkulova T.V., Kirillova G.L. The structure and prospects for oil and gas content in the northern sector of the Itun-Ilan branch of the Tan-Lu fault. Tikhookeanskaya geologiya. 2004;(6):55–75. In Russ.
6. Kharakhinov V.V. Neftegazovaya geologiya Sakhalinskogo regiona [Petroleum geology of the Sakhalin Region]. Moscow: Nauchnyi mir; 2010. 276 p. In Russ.
7. Kharakhinov V.V. Endodrainage systems and oil and gas occurrence in the Sea of Okhotsk region. Geologiya nefti i gaza. 2021;(2):61–79. DOI: 10.31087/0016-7894-2021-2-61-79. In Russ.
8. Shein V.S. Geology and petroleum potential of Russia [Geologiya i neftegazonosnost' Rossii]. Moscow: VNIGNI; 2012. 848 p. In Russ.
9. Shein V.S., Ignatova V.A. Geodinamika i perspektivy neftegazonosnosti osadochnykh basseinov Dal'nego Vostoka [Geodynamics and petroleum potential of Far Eastern sedimentary basins]. Moscow: VNIGNI; 2007. 296 p. In Russ.
10. Twiss R.J., Moores E.M. Structural Geology. New York : W.H. Freeman and Company; 1992. 532 p.
11. Gladenkov Yu.B., Sal'nikov B.A., Borovtsev A.K., Boyarinova M.E., Voevodin Yu.B., Volobueva V.I., Kovtunovich P.Yu., Shantser A.E. Ob’yasnitel'naya zapiska. Resheniya rabochikh mezhvedomstvennykh regional'nykh stratigraficheskikh soveshchanii po paleogenu i neogenu vostochnykh regionov Rossii – Kamchatki, Koryakskogo nagor'ya, Sakhalina i Kuril'skikh ostrovov [Explanatory note. Resolutions of the regional workshops on Paleogene and Neogene stratigraphy in the Russian East – Kamchatka, Koryak Highlands, Sakhalin, and Kuril Islands]. Moscow: GEOS; 1998. 146 p. In Russ.

​

Vadim I. Shegay  iD  Scopus

Expert Geologist
NTC NIS-NAFTAGAS D.O.O.,
12, Narodnog fronta, Novi Sad, 21102, Serbia
e-mail: shegai.vi@nis.rs

​

Alexey V. Tolstikov

Head of the Laboratory
Gazprom VNIIGAZ,
15, str. 1, Proyektiruyemy proyezd № 5537, Razvilka, Vidnoe,
Moscow region, 142717, Russia
e-mail: A_Tolstikov@vniigaz.gazprom.ru

​