“Lingulovye” mudstones: the lithological features of the regional marker / “Лингуловые” аргиллиты: литологические особенности регионального маркера

In present paper it have been considered the lithology of “Lingulovye” mudstones complex. This complex attributes to the Lower Kazanian formation and forms regional marker in Republic Tatarstan. “Lingulovye” mudstones accumulated within vast epicontinental sedimentary basin during Early Kazanian transgressive phase at the East of Russian plate. In this paper it was analyzed the petrographic composition of “Lingulovye” mudstones and it was also considered the map of thickness of this complex within Eastern part of Republic Tatarstan. This analysis allowed to determine a regional role of “Lingulovye” mudstones for palaeoenvironmental reconstructions and hydrocarbon reservoirs history. The analysis of the natural reservoirs of hydrocarbons in the lithologic aspect is one of the basic tasks during the explanation of their formation, the revealing of geological factors of distribution the hydrocarbon deposits, for example, the deposits of high-viscosity oils and bitumens in the Permian deposits of Republic Tatarstan. In this article the lithologic special features of the regional seal reper “Lingulovye” mudstones are examined. <...>