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Sedimentation of West-Siberian Plate Turonian deposits: history case of Kharampur licence block

UDK: 551.3.051
DOI: 10.24887/0028-2448-2017-9-70-75
Key words: Turonian, West Siberia, bioturbation, storm wave base, transgression, regression, glauconite, eolian transportation, authigene mineral formation
Authors: A.I. Kudamanov, E.B. Avramenko (TNNC LLC, RF, Tyumen)

Turonian gas-bearing sediments (Kuznetsov suite) of Kharampurskoye oil field were formed in the environment of continuous post-Senomanian West Siberia transgression and can feature complicated chemogenic-terrigenous type of sedimentation. Considerable distance between the coast (around 300-400 km) and sediment sources allows predicting relatively deepwater sedimentation settings (around 150-200 m) below the storm wave base and predominantly pelitic sediment composition. However, the actual data of core (around 50 m) from the upper part of Kuznetsov suite (silty-clay composition, relics of wave structures and traces of rather intensive bioturbation of sediments) give evidence of shallow depths of sedimentation in the area of Kharampurskoye oil field. With great probability degree the depth of storm influence in flat epicontinental seas can be evaluated as 20-30 m. The results of topography paleoreconstruction and the analysis of regional tectonic trend also indicate the existence of the Kharampur arch during the Turonian period, with 150-180 m height relative to adjoining areas of the sea bottom. The amount of clastic material (fine silt) rhythmically thickens up the section. Swelling and non-swelling components of clays decrease. Layered carbonatization occurs in places. That all allows suggesting a local sea regression, increased eolian processes of clastic material transportation, and episodic invasion of fresh waters (cases of layered carbonatization) at the end of the Kuznetsov suite sedimentation process in Kharampurskoye oil field.

References

1. Atlas litologo-paleogeograficheskikh kart yurskogo i melovogo periodov Zapadno-Sibirskoy ravniny i Ob’yasnitel’naya zapiska k Atlasu (Atlas of lithologic and paleogeographic maps of Jurassic and Cretaceous periods of the West Siberian Plain and the Explanatory note to the Atlas): edited by Nesterov I.I., Tyumen’: Publ. of ZapSibNIGNI, 1976, 85 p.

2. Lisitsyn A.P., Lavinnaya sedimentatsiya izmeneniya urovnya okeana, pereryvy i pelagicheskoe osadkonakoplenie – global'nye zakonomernosti (Avalanche sedimentation of sea level changes, breaks and pelagic sedimentation - global patterns), Proceedings of 27th International Geological Congress, Part 3, Moscow, 1984, pp. 3–21.

3. Maloletko A.M., Evolyutsiya rechnykh sistem Zapadnoy Sibiri v mezozoe i kaynozoe (Evolution of the river systems of Western Siberia in the Mesozoic and Cenozoic), Tomsk: Publ. of TSU, 2008, 288 p.

4. Emel'yanov E.M., Bar'ernye zony v okeane: Osadko- i rudoobrazovanie, geoekologiya (Barrier zones in the ocean: sedimentary and ore formation, geoecology), Kaliningrad: Yantaryy skaz Publ., 1998, 416 p.

5. Kudamanov A.I., Geologicheskoe stroenie i usloviya formirovaniya otlozheniy valanzhina na primere produktivnykh plastov Surgutskogo svoda Zapadno-Sibirskoy plity (Geological structure and conditions for the formation of Valanginian deposits on the example of productive strata of the Surgut arch of the West Siberian plate): thesis of candidate of geological and mineralogical science, Tomsk, 2007.

6. Pemberton S.G., Spila M., Pulham A.J. et al., Ichnology & sedimentology of shallow to marginal marine systems, Newfoundland: Publ. of Geological Association of Canada, 1998, 641 p.

7. Geologiya i poleznye iskopaemye Rossii (Geology and minerals of Russia), Part 2: Zapadnaya Sibir' (Western Siberia): edited by Orlov V.P., St. Petersburg: Publ. of VSEGEI, 2000, 477 p.

8. Litologiya i geologiya goryuchikh iskopaemykh (Lithology and geology of combustible minerals): edited by V.P. Alekseev, Ekaterinburg: Publ. of Ural State Mining University, 2012, 238 p.

Turonian gas-bearing sediments (Kuznetsov suite) of Kharampurskoye oil field were formed in the environment of continuous post-Senomanian West Siberia transgression and can feature complicated chemogenic-terrigenous type of sedimentation. Considerable distance between the coast (around 300-400 km) and sediment sources allows predicting relatively deepwater sedimentation settings (around 150-200 m) below the storm wave base and predominantly pelitic sediment composition. However, the actual data of core (around 50 m) from the upper part of Kuznetsov suite (silty-clay composition, relics of wave structures and traces of rather intensive bioturbation of sediments) give evidence of shallow depths of sedimentation in the area of Kharampurskoye oil field. With great probability degree the depth of storm influence in flat epicontinental seas can be evaluated as 20-30 m. The results of topography paleoreconstruction and the analysis of regional tectonic trend also indicate the existence of the Kharampur arch during the Turonian period, with 150-180 m height relative to adjoining areas of the sea bottom. The amount of clastic material (fine silt) rhythmically thickens up the section. Swelling and non-swelling components of clays decrease. Layered carbonatization occurs in places. That all allows suggesting a local sea regression, increased eolian processes of clastic material transportation, and episodic invasion of fresh waters (cases of layered carbonatization) at the end of the Kuznetsov suite sedimentation process in Kharampurskoye oil field.

References

1. Atlas litologo-paleogeograficheskikh kart yurskogo i melovogo periodov Zapadno-Sibirskoy ravniny i Ob’yasnitel’naya zapiska k Atlasu (Atlas of lithologic and paleogeographic maps of Jurassic and Cretaceous periods of the West Siberian Plain and the Explanatory note to the Atlas): edited by Nesterov I.I., Tyumen’: Publ. of ZapSibNIGNI, 1976, 85 p.

2. Lisitsyn A.P., Lavinnaya sedimentatsiya izmeneniya urovnya okeana, pereryvy i pelagicheskoe osadkonakoplenie – global'nye zakonomernosti (Avalanche sedimentation of sea level changes, breaks and pelagic sedimentation - global patterns), Proceedings of 27th International Geological Congress, Part 3, Moscow, 1984, pp. 3–21.

3. Maloletko A.M., Evolyutsiya rechnykh sistem Zapadnoy Sibiri v mezozoe i kaynozoe (Evolution of the river systems of Western Siberia in the Mesozoic and Cenozoic), Tomsk: Publ. of TSU, 2008, 288 p.

4. Emel'yanov E.M., Bar'ernye zony v okeane: Osadko- i rudoobrazovanie, geoekologiya (Barrier zones in the ocean: sedimentary and ore formation, geoecology), Kaliningrad: Yantaryy skaz Publ., 1998, 416 p.

5. Kudamanov A.I., Geologicheskoe stroenie i usloviya formirovaniya otlozheniy valanzhina na primere produktivnykh plastov Surgutskogo svoda Zapadno-Sibirskoy plity (Geological structure and conditions for the formation of Valanginian deposits on the example of productive strata of the Surgut arch of the West Siberian plate): thesis of candidate of geological and mineralogical science, Tomsk, 2007.

6. Pemberton S.G., Spila M., Pulham A.J. et al., Ichnology & sedimentology of shallow to marginal marine systems, Newfoundland: Publ. of Geological Association of Canada, 1998, 641 p.

7. Geologiya i poleznye iskopaemye Rossii (Geology and minerals of Russia), Part 2: Zapadnaya Sibir' (Western Siberia): edited by Orlov V.P., St. Petersburg: Publ. of VSEGEI, 2000, 477 p.

8. Litologiya i geologiya goryuchikh iskopaemykh (Lithology and geology of combustible minerals): edited by V.P. Alekseev, Ekaterinburg: Publ. of Ural State Mining University, 2012, 238 p.


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