Home

DOI 10.21440/2307-2091-2017-1-14-18

Composition of basalts from the pre-Jurassic basement of Western Siberia (West-Tarkosalinskaya area, Yamalo-Nenets autonomous district) pdf

V. S. Ponomarev, Yu. V. Erokhin, K. S. Ivanov

This paper presents the first results of study of mineralogical, petrological and geochemical composition of volcanites from pre-Jurassic basement of the West-Siberian megabasin near the West-Tarkosalinsk oil and gas deposit. West-Tarkosalinsk area is located on the territory of Purovsky region of Yamalo-Nenets Autonomous District of Tyumen region. Gubkinsky and Tarko-Sale are the towns nearest to the deposit. Volcanites of the well West-Tarkosalinsk 905 from the depth of 4362-4397 m have
a small amount of dolerites present in the upper part of the section, which change to porphyritic basalts with depth. By chemical composition, the studied volcanites belong to moderate- and high calc-alkaline basalts and andesibasalts. The rocks have undergone post-magmatic transformation (formation of albite, replacement of volcanic glass with chlorite, development of the secondary carbonate, prehnite, titanite and pumpellyite) under the conditions of prehnite-pumpellyite facies (bottoms of the greenschist facies of metamorphism). Volcanites contain high concentration of (g / t) Ti (up to 8673), V (up to 275), Mn (up to 1304), Zn (up to 95), Sr (up to 231), Zr (up to 162), Ba (up to 397), Ce (up to 41). The content of rare earth elements in rocks is about 59–116 g / t. The trend of distribution of rare earth elements normalized to chondrite for basalts is characterized by a predominance of light lanthanide elements over heavy lanthanide elements and either a lack of (W-Tar 905 / 4396.56), or the presence of a weak negative Eu anomaly. E-MORB basalts have a similar distribution of rare earth elements, but at a lower content of light lanthanide elements. According to petrological and geochemical characteristics, the studied volcanites are similar to the basalts of Koltogorsky-Urengoysky rift of the West-Siberian megabasin.

Keywords: mineralogy; geochemistry; basalts; pre-Jurassic basement; West-Tarkosalinsk deposit; Western Siberia.

 

REFERENCES

1. Al'mukhamedov A. I., Medvedev A. Ya., Kirda N. P., Baturina T. P. 1998, Triasovyi vulkanogennyy kompleks Zapadnoy Sibiri [Triassic volcanic complex of the Western Siberia]. Doklady Akademii Nauk [Doklady Earth Sciences], vol. 362, no. 3, pp. 372–377.
2. Bochkarev V. S. 2001, Vulkanogennye obrazovaniya triasa Zapadnoy Sibiri [The volcanic formation of the Triassic of West Siberia]. Trias Zapadnoy Sibiri [Triassic of the Western Siberia], Novosibirsk, pp. 70–79.
3. Dobretsov N. L., Kirdyashkin A. G., Kirdyashkin A. A. 2001, Glubinnaya geodinamika [Deep geodynamics], Novosibirsk, 409 p.
4. Ivanov K. P., Ivanov K. S., Fedorov Yu. N. 2007, Geokhimiya triasovykh vulkanitov Zapadno-Sibirskoy plity (na primere tyrinskoyi serii) [Geochemistry of the Triassic volcanic rocks of the West Siberian plate (based on the example of the Turin series)]. Geodinamika, magmatizm, metamorfizm i rudoobrazovanie [Geodynamics, magmatism, metamorphism and mineralization], Еkaterinburg, pp. 766–790.
5. Ivanov K. S., Fedorov Yu. N., Ronkin Yu. L., Erokhin Yu. V. 2005, Geokhronologicheskie issledovaniya fundamenta Zapadno-Sibirskogo neftegazonosnogo megabasseyna; itogi 50 let izucheniya [Geochronological studies of basement of the West Siberian petroleum megabasin; the results of 50 years of study]. Litosfera [Litosphere], no. 3, pp. 117–135.
6. Zhuravlev E. G. 1986, Trappovaya formatsiya Zapadno-Sibirskoy plity [Trappean formation of the West Siberian Plate]. Izvestiya AN SSSR. Seriya geol. [Proceedings of the Academy of Sciences of the USSR. Series geology], no. 7, pp. 26–32.
7. Kremenetskiy A. A., Gladkikh V. S. 1997, Nizkokalievye toleitovye bazal'ty – indikator evolyutsii paleogeodinamicheskikh obstanovok i prognoza uglevodorodnogo syr'ya (po dannym Tyumenskoy skvazhiny SG-6) [Low-K tholeiitic basalts - the evolution indicator of paleogeodynamic environments of and prediction of hydrocarbon raw materials (according to data from the borehole Tyumen SG-6)]. Geokhimiya [Geochemistry International], no. 6, pp. 609–617.
8. Medvedev A. Ya., Al'mukhamedov A. I., Kirda N. P. 2003, Geokhimiya permotriasovykh vulkanitov Zapadnoy Sibiri [Geochemistry of Permian Triassic volcanic rocks of West Siberia]. Geologiya i geofizika [Russian Geology and Geophysics], vol. 44, no. 1–2, pp. 86–100.
9. Kontorovich A. E., Surkov V. S. et al. 1994, Neftegazonosnye basseyny i regiony Sibiri [Oil and gas basins and regions of Siberia], Novosibirsk, vol. 2, 201 p.
10. Ivanov K. S., Kormil'tsev V. V., Fedorov Yu. N. et al. 2003, Osnovnye cherty stroeniya doyurskogo fundamenta Shaimskogo neftegazonosnogo raiona [The main features of the structure of pre-Jurassic basement of the Shaim oil and gas district]. Puti realizatsii neftegazovogo potentsiala KhMAO [Ways of realization of oil and gas potential of KhMAO], Khanty-Mansiysk, vol. 1, pp. 102–113.
11. Saraev C. V., Baturina T. P., Ponomarchuk V. A., Travin A. V. 2009, Permotriasovye vulkanity Koltogorsko-Urengoyskogo rifta Zapadno-Sibirskoy geosineklizy [Permian-Triassic volcanites of Koltogorsk-Urengoy rift West Siberian geosyneclise]. Geologiya i geofizika [Russian Geology and Geophysics], vol. 50, no. 1, pp. 4–20.
12. Surkov V. S., Trofimuk A. A., Zhero O. G., Kontorovich A. E., Smirnov L. V. 1982, Triasovaya riftovaya sistema Zapadno-Sibirskoy plity, ee vliyanie na strukturu i neftegazonosnost' platformennogo mezozoysko-kaynozoyskogo chekhla [Triassic rift system of the West Siberian Plain, its impact on the structure and oil and gas platform Mesozoic and Cenozoic cover]. Geologiya i geofizika [Russian Geology and Geophysics], no. 8, pp. 3–15.
13. Simonov V. A., Klets A. G., Stupakov S. I. 2008, Bazal'tovye kompleksy v fundamente Zapadno-Sibirskogo osadochnogo basseyna (dannye po skvazhine Mayzasskaya-1) [Basalt complexes in the basement of the West Siberian sedimentary basin (data for the borehole Mayzasskaya-1)]. Fundament, struktury obramleniya Zapadno-Sibirskogo osadochnogo basseyna i problemy neftegazonosnosti. Vserossiyskaya konferentsiya [Structural framing structure of the West Siberian sedimentary basin, and oil and gas potential problems. All-Russian Conference]. Tyumen, pp. 197–201.
14. Simonov V. A., Klets A. G., Kovyazin S. V., Stupakov S. I., Travin A. V. 2010, Fiziko-khimicheskie usloviya rannego plyumovogo magmatizma Zapadnoy Sibiri [Physico-chemical conditions of the early plume magmatism of the Western Siberia]. Geologiya i geofizika [Russian Geology and Geophysics], vol. 51, no. 9, pp. 1277–1297.
15. Fedorov Yu. N. 2004, Geologicheskoe stroenie i perspektivy neftegazonosnosti oblasti sochleneniya Pripolyarnogo Urala i Zapadno-Sibirskogo megabasseyna. Avtoref. dis... kand. geol.-mineral. nauk [Geological structure and petroleum potential of the junction area of Polar Urals and West Siberian megabasin. Abstract of the dissertation of the candidate of geol.-mineral. sciences]. Еkaterinburg, 28 pp.
16. Reichow M. K, Saunders A. D., White R. V., Al’mukhamedov A. I., Medvedev A. Ya. 2005, Geochemistry and petrogenesis of basalts from the West Siberian Basin: an extension of the Permo-Triassic Siberian Traps, Russia. Lithos, vol. 79, pp. 425–452.
17. Kontorovich A. E., Nesterov I. I., Salmanov F. K. et al. 1975, Geologiya nefti i gaza Zapadnoy Sibiri [Petroleum Geology of the Western Siberia], Moscow, 679 p.
18. Kulikov P. K., Belousov A. P., Latypov A. A. 1972, Zapadno-Sibirskaya triasovaya riftovaya sistema [Western Siberian Triassic rift system]. Geotektonika [Geotectonics], no. 6, pp. 79–87.
19. Dobretsov N. L. 1997, Permsko-triasovye magmatizm i osadkonakoplenie v Evrazii kak otrazhenie superplyuma [Permian-Triassic magmatism and sedimentation in Eurasia as a reflection superplume]. Doklady Akademii Nauk [Doklady Earth Sciences], vol. 354, no. 2, pp. 220–223.
20. Bochkarev V. S., Brekhuntsov A. M., Deshchenya N. P. 2005, Geodinamicheskie obstanovki formirovaniya Zapadno-Sibirskogo basseyna i ego neftegazonosnost' [Geodynamic conditions of formation of the West Siberian basin and its petroleum potential]. Tektonika zemnoy kory i mantii. Materialy XXXVIII Tektonicheskogo soveshchaniya [Tectonics of the Earth's crust and mantle. Materials of XXXVIII Tectonic Conference], Moscow, vol. 1, pp. 71–74.
21. Podurushin V. F. 2004, Geodinamicheskaya evolyutsiya fundamenta Zapadno-Sibirskoy plity v pozdneyi permi-triase [Geodynamic evolution of the base-ment of the West Siberian plate in the late Permian–Triassic]. Evolyutsiya tektonicheskikh protsessov v istorii Zemli [Evolution of tectonic processes in the Earth's history], Novosibirsk, vol. 2, pp. 80–83.
22. Le Bas M. J., Le Maotre R. W., Streckeisen A., Zanettin B. 1986, A chemical classification of volcanic rocks based on the total alkali-silica diagram. Journal of Petrology, vol. 27, pp. 745–750.
23. Pearce J. A., Cann J. R. 1973, Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth Planetary Science Letters, vol.19, pp. 290–300.
24. Sun S. S., McDonough W. F. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Magmatism in Ocean Basins, London, pp. 313–345.
25. Wood D. A. 1980, The application of a Th–Hf–Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas on the British Tertiary Volcanic Province. Earth Planetary Science Letters, vol. 50, pp. 11–30.

Лицензия Creative Commons
All articles posted on the site are available under the Creative Commons Attribution 4.0 Global License.