Organic matter in the Saf'yanovka copper massive sulfide deposit (Middle Urals)
E.I. Soroka a*, A.A. Galeev b**, V.I. Petrova c***, F.F. Nosova b****, V.P. Lyutoev d*****, L.V. Leonova a******, T.R. Zakirov b*******
aZavaritskii Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620075 Russia
bKazan Federal University, Kazan, 420008 Russia
cI.S. Gramberg VNIIOkeangeologia, St. Petersburg, 190121 Russia
dN.P. Yushkin Institute of Geology, Komi Scientific Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, 167982 Russia
E-mail: *sopoka@igg.uran.ru, **akhmet.galeev@kpfu.ru, ***petrovavi@mail.ru, ****fida64@mail.ru, *****vlutoev@geo.komisc.ru, ****** lvleonova@yandex.ru, *******timurz0@mail.ru
Received January 21, 2019
DOI: 10.26907/2542-064X.2019.2.307-324
For citation: Soroka E.I., Galeev A.A., Petrova V.I., Nosova F.F., Lyutoev V.P., Leonova L.V., Zakirov T.R. Organic matter in the Saf'yanovka copper massive sulfide deposit (Middle Urals). Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki, 2019, vol. 161, no. 2, pp. 307–324. doi: 10.26907/2542-064X.2019.2.307-324. (In Russian)
Abstract
The influence of tectonic processes on the transformation of organic matter in volcanic and volcano-sedimentary rocks within the East Ural uplift in the southern Rezh structural-formational zone was studied. The basic features and temperature ranges of organic matter (OM) and ore-bearing rock metamorphic transformations in the Saf'yanovka deposit were established using the methods of thermal analysis, electron paramagnetic resonance, and complex geochemical studies, including GC-MS.
The geochemical study of organic matter in the ore-bearing rocks of the Saf'yanovka deposit confirmed its relation to the sapropelic type and to shallow marine conditions of formation. The syngenetic nature of the OM and ore-bearing rocks was established on the basis of the geochemical and physicochemical analyses. The transformation stage of OM in the Saf'yanovka deposit indicates its rapid, but incomplete maturation in the evolution of hydrothermal fluid.
Keywords: carbon-siliceous rocks, fossil organic matter, bitumen, electron paramagnetic resonance, gas chromatography-mass spectrometry
Acknowledgments. We thank N.V. Leshchev, Chief Geologist of the Saf'yanMed' Company, and the staff of the Saf'yanMed' Company for providing us with the material for this study.
The work was supported in part by the Russian Government Program of Competitive Growth of Kazan Federal University, as well as by the subsidy allocated to Kazan Federal University for the state assignment in the sphere of scientific activities.
The study was performed within the framework of the state assignment of the IGG of the Ural Branch of the Russian Academy of Sciences (state registration no. AAAA-A18-118052590028-9).
Figure Captions
Fig. 1. Schematic geological map of the Saf'yanovka ore deposit.
Fig. 2. Contact zone of sandstones and siliceous-carbonaceous rocks.
Fig. 3. Limestone from the wall of the mine workings.
Fig. 4. Characteristic EPR spectra in the region of thermally unstable OM and quartz radicals.
Fig. 5. Arrangement of n-alkanes in sample Sh16/12.
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