The nature, origin and significance of luminescent layers in the Bazhenov Shale Formation of West Siberia, Russia

M. V. Shaldybin, M. J. Wilson, L. Wilson, Yu M. Lopushnyak, R. Brydson, V. V. Krupskaya, E. S. Kondrashova(Deeva), A. V. Glotov, I. V. Goncharov, V. V. Samoilenko, S. I. Arbuzov, O. V. Bether, A. R. Fraser, L. Bowen, D. White, N. V. Dorofeeva

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Argillites that strongly luminesce under UV radiation were detected in the Bazhenov Shale Formation (BSF) of the West Siberian Basin during routine core examination and found to be persistent over a wide lateral area. The mineralogy and fabric of these luminescent layers were characterized by optical and fluorescence microscopy, SEM, TEM, XRD and IR methods. Optical and fluorescence microscopy showed that the luminescent layers were to a large extent derived from volcanic ash falls and could be described as meta-tuffites, although normal detrital sedimentation continued at the same time. The layers have a thickness of several mm to a maximum of 3–4 cm and can be defined as a clay-rich regional horizons extending for over 500 km. XRD showed that two principal clay minerals were predominant, namely a kaolinite group minerals, (kaolinite-rich) and a mixed-layer illite-smectite (I/S) similar to that found in K-bentonite. Total organic matter in the luminescent layers is much lower than that in the enclosing BSF clayey-silty siliceous sediments above and below as shown by pyrolytic analyses. Evidence is presented that the luminescent characteristic of the argillites is related to their clay mineralogy, specifically to their content of kaolin minerals, although a contribution from nitrogenous organic matter cannot be entirely discounted. In some ways the luminescent argillites can be compared with bentonites associated with ash transformations or with tonsteins in coal beds, which are also derived from volcanic ash falls and contain highly crystalline kaolinite. However, tonsteins originate at or near land surface whereas the argillites were apparently formed in the deep ocean. But just as tonsteins can be used for detailed stratigraphic studies and are valuable in the context of coal exploration, so may the luminescent argillites prove to be significant both stratigraphically and in the search for economic hydrocarbon deposits, bearing in mind that their clay mineralogy may be sensitive to temperature and depth of burial and related to their placement in the oil and gas window.

Original languageEnglish
Pages (from-to)358-375
Number of pages18
JournalMarine and Petroleum Geology
Volume100
DOIs
Publication statusPublished - 1 Feb 2019

Fingerprint

Siberia
Russian Federation
shale
clays
kaolinite
mineralogy
ashes
volcanic ash
clay
minerals
microscopy
fluorescence
coal
X-ray diffraction
volcanology
organic matter
kaolin
mineral
illite
bentonite

Keywords

  • Bazhenov shale
  • K-bentonite
  • Kaolinite
  • Llite-smectite
  • Luminescent layers
  • Meta-tuffites
  • Tonsteins

ASJC Scopus subject areas

  • Oceanography
  • Geophysics
  • Geology
  • Economic Geology
  • Stratigraphy

Cite this

Shaldybin, M. V., Wilson, M. J., Wilson, L., Lopushnyak, Y. M., Brydson, R., Krupskaya, V. V., ... Dorofeeva, N. V. (2019). The nature, origin and significance of luminescent layers in the Bazhenov Shale Formation of West Siberia, Russia. Marine and Petroleum Geology, 100, 358-375. https://doi.org/10.1016/j.marpetgeo.2018.11.022

The nature, origin and significance of luminescent layers in the Bazhenov Shale Formation of West Siberia, Russia. / Shaldybin, M. V.; Wilson, M. J.; Wilson, L.; Lopushnyak, Yu M.; Brydson, R.; Krupskaya, V. V.; Kondrashova(Deeva), E. S.; Glotov, A. V.; Goncharov, I. V.; Samoilenko, V. V.; Arbuzov, S. I.; Bether, O. V.; Fraser, A. R.; Bowen, L.; White, D.; Dorofeeva, N. V.

In: Marine and Petroleum Geology, Vol. 100, 01.02.2019, p. 358-375.

Research output: Contribution to journalArticle

Shaldybin, MV, Wilson, MJ, Wilson, L, Lopushnyak, YM, Brydson, R, Krupskaya, VV, Kondrashova(Deeva), ES, Glotov, AV, Goncharov, IV, Samoilenko, VV, Arbuzov, SI, Bether, OV, Fraser, AR, Bowen, L, White, D & Dorofeeva, NV 2019, 'The nature, origin and significance of luminescent layers in the Bazhenov Shale Formation of West Siberia, Russia', Marine and Petroleum Geology, vol. 100, pp. 358-375. https://doi.org/10.1016/j.marpetgeo.2018.11.022
Shaldybin, M. V. ; Wilson, M. J. ; Wilson, L. ; Lopushnyak, Yu M. ; Brydson, R. ; Krupskaya, V. V. ; Kondrashova(Deeva), E. S. ; Glotov, A. V. ; Goncharov, I. V. ; Samoilenko, V. V. ; Arbuzov, S. I. ; Bether, O. V. ; Fraser, A. R. ; Bowen, L. ; White, D. ; Dorofeeva, N. V. / The nature, origin and significance of luminescent layers in the Bazhenov Shale Formation of West Siberia, Russia. In: Marine and Petroleum Geology. 2019 ; Vol. 100. pp. 358-375.
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