Organic matter in the Saf'yanovka copper massive sulfide deposit (Middle Urals)

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