Геология

Assessment of textural and structural varieties of rock salt can make a prediction texture characteristics of reservoir rock salt for possible use in the design and construction of underground storage tanks

Lithologies were examined of the cores from the deep wells that have penetrated the entire section of the Triassic system in the Pricaspian Depression; material compositions and accumulation peculiarities of the Triassic sequences have been revealed. Certain events have been found comparable to those in the North Germanic Depression.

Tasmanites Newton green algae are suggested as marine sediments scattered organic matter catagenetic maturity indicators. Indicator palynological scale of rock maturation determination and its application were are regarded based on regular variation of cyst membrane with the increase of temperature

A layer characterized by the ostracod genus Paraparchites species formation outbreak exists in the Lower Permian Kungurian stage section of the Urals, Precaspian basin and northern part of the Caspian Sea. This layer is regarded as a Paraparchites biofacies, which has a certain place in the lateral series of sedimentation environments. Commercial hydrocarbon accumulations are associated with it within the northern flatbed zone of the Precaspian basin.

Results of ekologo-geochemical approbation in territory of preschool institutions of a city of Engels are presented. The data about disease of children in the given establishments on various types of diseases is analysed. The estimation of an ecological condition of a soil cover is given

The Precaspian depression subsoil geothermal mode characteristics result not only from presence of the huge evaporite formations and salt dome tectonics, but also from the depth structure of its no granite crust and underlying lithospheric mantle. The current heat flow is primarily of mantle origin and correlates with the HC, helium and other mobile components deep fluid flow.

Explorations of 1979–1982 and 2006–2009 have made the field ready for industrial development and have revealed peculiar manifestations of internal salt tectonics within the subhorizontal halogenic bodies. The degree and the character of intrasalt tectonics are estimated according to boudinage, i. e. the response of the rigid dolomite- anhydrite interlayers within the salts to arising tectonic stresses. Upon folding, the interlayers are torn into separate fragments and stretched along the bedding.

Event stratification of the sections constitutes an investigation trend aimed at detailed interregional correlation of sedimentary sequences. Based on extensive factual material, the authors have revealed the most significant changes in the Middle Triassic sedimentary and volcanogenic-sedimentary bodies. The entire Middle Triassic is peculiar for manifestations of hydrothermal-metasomatic processes within terrigenous, biogenic, volcanogenic bodies and bodies of mixed origins.

The following sequence from the Kamennyj gully (Volgograd Region) has been shown to occur in the section, upwards from below: a sand member as the lower portion of the Late Bajocian alluvial Gnilushkinskaya suite; the upper (clayey) part of the overlying littoral Karaulinskaya suite, referred to the Upper Bajocian Pseudocosmoceras michalskii biozone; fragments of a complete section of the Lower Bathonian Zhirnovskaya suite (Gonolkites convergens zone), with the clays deposited under the normal shallow sea conditions; the upper part of the Middle Batho

Arterial directions in formation of module organization of skeleton hexactinellids are caused by vegetative forms of reproduction. It is supposed that some tendency of selection of protozoa module forms can be traced in morphogenesis of separate generic types of late Cretaceous sponges. The concept “polyosculumic„ sponges is considered in vast context personally in reference to skeletons with some osculumics formed in the result of partial regeneration of organism