Open AccessSedimentary-diagenetic ore formation in the Jurassic system terrigenous deposits of the Tatarstan Republic
Author(s) -
Э. А. Королев,
А. И. Бахтин,
А. А. Ескин,
Albert Korolev,
E R Barieva
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/516/1/012012
Subject(s) - authigenic , geology , pyrite , terrigenous sediment , geochemistry , diagenesis , chlorite , facies , sedimentary rock , iron oxide copper gold ore deposits , mineralization (soil science) , arenite , clay minerals , mineralogy , clastic rock , geomorphology , fluid inclusions , hydrothermal circulation , quartz , paleontology , structural basin , soil science , soil water
Authigenic ore mineralization of the Jurassic terrigenous complexes rocks, widespread in the Tatarstan, is considered. It has been established that the ore minerals associations’ composition is determined by geochemical conditions of mineral formation environment. In rocks of oxide geochemical facies (sandstones, siltstones), iron, manganese and titanium oxides predominate. Pyrite framboids and copper-nickel intermetallide compounds predominate in rocks of neutral geochemical facies (green clays). The rocks of anoxic geochemical facies (black clay, oil shale) contain only pyrite framboids. The main factor determining the authigenic ore minerals associations composition is redox potential of environment.