Geologicheskii Vestnik

Based on the example of two samples of volcanomictic sandstones, the article presents a comparative analysis of two research methods — microscopy in transmitted polarized light and X-ray computer microtomography. It is shown that microscopy gives the most complete results — it allows to determine the mineralogical and petrographic composition of rocks, their structural and textural properties. X-ray computed tomography can only judge the internal homogeneity of the samples. Analysis of the published data showed that the information content of the results of tomographic studies increases in sandstones of simple composition and consisting of grains with a contrastly diff erent coeffi cient of linear attenuation of X-rays.

X-ray microtomography, sandstones, the Iltibanovo formation, the Ulutau formation

• Fazliakhmetov A.M. (2011) Sedimentation conditions of the Ulutau suite of the West Magnitogorsk zone of the Southern Urals. Litosfera, (2), 42-52. (In Russian).
• Fazliakhmetov A.M., Statsenko Ye.O., Khramchenkov E.M. (2012) On the use of X-ray computed tomography in the study of sandstones. Geologicheskiy sbornik № 11 – Geological collection № 11. Ufa: DesignPress, 92-95. (In Russian).
• Fazliakhmetov A.M., Statsenko Ye.O., Khramchenkov E.M., Tagariyeva R.Ch. (2015) On the method of studying conodonts enclosed in siliceous rocks. Geologiya. Izvestiya nauk o Zemle i prirodnykh resursov AN RB – Geology. Bulletin of Earth Sciences and Natural Resources of the Academy of Sciences of the Republic of Bashkortostan. Ufa, (21), 113-115. (In Russian).
• Korost D.V., Kalmykov G.A., Yapaskurt V.O., Ivanov M.K. (2010) Application of computer microtomography to study the structure of terrigenous reservoirs. Geologiya nefti i gaza, (2), 36-42. (In Russian).
• Savel’yev D.Ye., Kozhevnikov D.A., Bazhin Ye.A. (2016) Application of X-ray tomography to study the structure of chromium ores (on the example of the Saksay site of the Sredny Kraka massif). Materialy i doklady 11-i Mezhregional’noi nauchno-prakticheskoy konferentsii “Geologiya, poleznyye iskopayemyye i problemy geoekologii Bashkortostana, Urala i sopredel’nykh territoriy” [Materials and reports of the 11th Interregional Scientifi c and Practical Conference “Geology, mineral resources and problems of geoecology of Bashkortostan, the Urals and adjacent territories”]. Ufa, DesignPress, 266-269. (In Russian).
• Yakushina O.A., Khozyainov M.S. (2014) Analysis of the possibilities of X-ray tomography for petrophysical studies of oil well cores. Karotazhnik – Well Logger, 2(236), 107-121. (In Russian).
• Yakushina O.A., Ozhogina Ye.G., Khozyainov M.S. (2018) Morphostructural analysis of mineral matter: X-ray tomography method. Razvedka i okhrana nedr – Exploration and protection of mineral resources. (10), 66-69. (In Russian).
• Yefimov A.A., Savitskiy Ya.V., Galkin S.V., Shapiro S.A. (2016) Experience of study of core from carbonate deposits by X-ray tomography. Bulletin of PNRPU. Geology. Oil & Gas engineering & Mining, 15(18), 23-32. DOI: 10.15593/2224-9923/2016.18.3.
• Zaynullin R.I. (2017) Composition and features of the formation of volcanoclastic deposits of the Lower Devonian of the West Magnitogorsk zone of the South Urals. Litosfera, 17(2), 78-94. (In Russian).
• Zaynullin R.I. (2018) Sedimentation conditions of the Lokhkov-Lower Emsian volcaniclastic deposits of the West Magnitogorsk zone of the Southern Urals. Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov – Bulletin of the Tomsk Polytechnic University. Georesource engineering, (12), 104-113. (In Russian).