Geology

The Precaspian Depression Geothermal Conditions and Heat and Fluid Flows

Authors: Richter Y. A.

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.

Concentration of Lead and Cadmium in Territory of Preschool Institutions of the City of Engels

Authors: Reshetnikov M. V., Dinges O. G.

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

Kungurian Ostracod Biofacies Paraparchites as a Biostratigraphic Correlation Reference and Hydrocarbons Exploratory Search Sign

Authors: Kukhtinov D. A., Kukhtinov P. D.

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.

Alga Tasmanites Newton, 1875 in Lower Permian Sediments within the Western Part of the Pre Caspian Depression and their Role in Stratigraphy and Geology Oil and Gas

Authors: Zdobnova E. N.

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

Triassic Beds from the Pricaspian Depression (Lithology‑S tratigraphy Study)

Authors: Bukina T. P., Yanochkina Z. A.

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.

Features Postsedimentation Structural and Textural changes in Rock Salt Deposits in Sections of Halide (with the Example of Prikaspian deep)

Authors: Muzalevskaya L. V.

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

Anthropogenous Transformation of the Geological Environment in Urbanized Areas as a Factor in the Destruction of Natural Monuments (for Example “Open-cast Zaplatinovka”)

Authors: Sheshnev A. S., Ivanov A. V.

The condition of the natural monument “open-cast Zaplatinovka” in territory of Saratov in the condition of anthropogenous loading is considered in the article. The characteristic of a cut of anthropogenous deposits is resulted, stages of transformation of s relief on a site are allocated

Some Features of Hydrothermal Transition Amygdaloidal Basalts Turin Series Kushmurunskogo Graben (Turgay Trough)

Authors: Shelepov D. A.

The article discusses some features of hydrothermal alteration of basaltic amygdaloidal Turin volcanogenic-sedimentary series. The composition and the relationship of mineral components performing tonsil. The alternation of layer silicates and zeolites, indicating a change in the composition and physico-chemical characteristics of the mineral solution.

New Records of the Chimaeroid Genus Stoilodon Nessov & Averianov, 1996 (Holocephali, Chimaeroidei) Remains from the Late Jurassic and Early Cretaceous of European Russia

Authors: Popov E. V., Efimov V. M.

Based on new finds of mandibular tooth plates of the chimaeroid Stoilodon aenigma Nessov &Averianov, 1996 (Holocephali, Chimaeroidei) from the Lower Cretaceous of central Russia, the diagnosis of the genus is modified and validity of the taxon is confirmed. New record of mandibular plate of the species from the Ryazanian regional stage (boreal Berriasian stage) of the Moscow Region has allowed us to expand stratigraphical distribution of the species within the whole early Cretaceous. It is estimated that Stoilodon did not exceed 1.5 m in body length.

Perifrontal Forms of the Late Cretaceous Modular Hexactinellids (Porifera)

Authors: Pervushov E. M.

Certain tendencies are supposed to show up in morphogenesis of the Late Cretaceous skeletal sponges, hexactinellids; those tendencies make it possible to distinguish some forms of diverse-level modular organization among the unitary representatives of the group. Generation of primitive ≪modular≫ forms, defined as the perifrontal ones, is associated with incomplete gemmation and isolation of solitary cross canals, apo- or prosochetes

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