The Structure and Formation Conditions of the Callovian–Oxfordian Deposits of Sudak Bay (Crimea)

The composition and origin of the Callovian–Oxfordian deposits of the Sudak Bay were characterized on the basis of the generalization and analysis of our own results, as well as published and unpublished data. The botanical future was first implemented for the geological mapping of the Oxfordian deposits.     

The Structure and Formation Conditions of the Bedenekir Formation Deposits (Thithonian Stage) of Mountainous Crimea

The composition and origin of the Bedenekir Formation deposits of Mountainous Crimea are detailed on the basis of our work results and analysis of both published and unpublished data.     

Detecting global atmospheric oscillations by seismic instruments

Izvestiya, Physics of the Solid Earth - We briefly overview the periodic atmospheric motions in the period range from 1 h to a few dozen days. It is shown that many oscillations recorded by...     

Phyllosilicates (glauconite, illite, and chlorite) in terrigenous sediments of the Arymas Formation (Olenek High)

It is shown that globular phyllosilicates subjected to deep categenesis are abundant in Middle Riphean sandstones and siltstones (lower subformation of the Arymas Formation) of the Olenek High. Their detailed structural-crystallochemical characteristics are given. Secondary alterations of globules and the associated pelletal minerals at different stages of lithogenesis (illitization, chloritization, ferrugination, disintegration, and so on) are considered. Structural-crystallochemical characteristics of Fe-illite and Fe²⁺-Mg-chlorite in globules, pellets, separate clayey strata among glauconite-bearing sandstones and siltstones (hereafter, sandy-silty rocks), and mudstone interlayers are also presented. Possible mechanisms of the formation of these minerals are discussed.     

Paleobotanic and lithologic characteristics of Middle Devonian sediments in the Hlubočepy section (Czech Republic)

This paper discusses for the first time the palynological and lithologic characteristics of Middle Devonian sediments of the Srbsko Formation in the Hlubočepy section (Czech Republic). The Eifelian/Givetian boundary in this formation is analyzed from literature and personal data.     

Chloritization of Globular and Platy Phyllosilicates of the Glauconite Series in Terrigenous Rocks of the Upper Riphean Päräjarvi Formation (Srednii Peninsula)

It is shown that glauconite–quartz sandstones of the Upper Riphean Päräjarvi Formation (Srednii Peninsula, Murmansk coast of the Barents Sea) are subjected to deep catagenesis. They contain abundant chlorite that replaces globular and platy Al-glauconite to a variable extent. Crystallochemical characteristics and microtextures of chlorite are described. Genesis of platy Al-glauconite, as well as globular and platy chlorite, is discussed.     

Pseudomorphous Replacement of Globular Glauconite by Mixed-Layer Chlorite–Berthierine in the Outer Contact of Dike: Evidence from the Lower Riphean Ust'-Il'ya Formation,Anabar Uplift

Globular, platy, and fine-dispersed phyllosilicates of chloritic composition were studied in the outer contact of dike with glauconite-bearing rocks. It is shown that the globular Al-glauconite is replaced by pseudomorphs of mixed-layer Mg- and Fe-bearing chlorite–berthierine containing 5% berthierine layers in this zone. The crystallochemical characteristics and microstructure are reported for the globular, platy, and fine-dispersed chlorites. The possible models of chlorite–berthierine formation are discussed.     

The interacting subsystems theory of active galactic nuclei – I. The broad-absorption-line QSO theory

The theory of broad-absorption-line (BAL) QSOs is worked out on the basis of the radiation hydrodynamics equation solution for the two-phase media of active galactic nuclei. We suppose that the BAL QSO physics depends on some 'hidden' AGN parameters, such as the mass and size of the compact stellar system. We therefore approach this problem in the more general framework of the 'interacting subsystems theory', which includes these parameters. We compare the results of the numerical model calculations with the observed spectra and show that the BAL QSOs (and the radio-quiet quasars as well) contain massive compact stellar kernels in their central regions. We show that the line-locking effect is determined by the radiation pressure, and is also favoured by the drag force of the hot gas acting on the line-absorbing clouds.
We derive some general conclusions about the physics of AGN. In particular, we show that the radio-quiet versus radio-loud dichotomy can be explained by using two types of hot gas outstreams in quasars.     

Detection of short-period global waves from nightglow observations

Atmospheric temperature oscillations at similar frequencies have been detected in the spectra of variations in the rotational temperatures of the OH and O₂ nighttime emissions, simultaneously observed at two spaced stations in the range of periods ～1–3 h. These oscillations are probably caused by global waves: short-period solar tides and/or free oscillations of the atmosphere.