Geodynamics of the Ural Foredeep and Geomechanical Modeling of the Origin of Hydrocarbon Accumulations

We present tectonic implications for hydrocarbon accumulations in the Ural?Novaya Zemlya Foredeep. Its eastern flank is rich in economical oil and gas deposits mostly localized within the fold-and-thrust belt that was constructed as a result of continent?continent collision during the Ural Paleoocean closure. On the basis of striking correlation between oil and gas accumulation and fold-and-thrust tectonics we performed geomechanical and petroleum systems modelling that allowed us to propose a new geodynamical model for hydrocarbon accumulations in both fold-upthrust and subthrust structural levels of the Ural?Novaya Zemlya Foredeep.     

First Data on the Age (U–Pb,SHRIMP-II) and Composition of Zircon from the Unique Yarega Oil–Titanium Deposit,South Timan

Doklady Earth Sciences - Isotope–geochemical study of zircon from leucoxene–quartz sandstone of the Yarega deposit in South Timan was conducted for the first time using the Sensitive...     

Lithostratigraphy and geochemistry of Upper Vendian‒Lower Cambrian deposits in the northeastern Baltic monocline

The results of investigations of Upper Vendian?Lower Cambrian deposits in the northeastern part of the Baltic monocline specify views on the evolution of depositional environments of sedimentary successions constituting the basal part of the sedimentary cover in inner areas of the northwestern East European Platform. It is shown that the Late Vendian and initial Cambrian were characterized by the consecutive influx of relatively mature terrigenous detrital material that originated from both the weathering crust of the Baltic Shield and new sources. Its deposition was interrupted by notable, although likely asynchronous, hiatuses, which are registered at the base of the Upper Vendian Vasileostrovskaya and Voronkovo formations and Lower Cambrian Lomonosov Formation. In the Late Vendian, sedimentary material was transported from the Baltic Shield, while beginning from the initial Early Cambrian the additional contribution to the formation of the sedimentary cover of the Baltic monocline was provided by coarse-grained sedimentary material from the Timan margin of the Baltica as follows from U?Pb isotopic ages obtained for detrital zircons. At the same time, lithogeochemical parameters of fine-grained rocks experienced no substantial changes.     

Instrumental Determination of the Earth’s South Magnetic Pole Position During the Round-the-World Antarctic Expedition on Board the Russian Navy ORV Admiral Vladimirsky

Izvestiya, Physics of the Solid Earth - Abstract—The round-the-world Antarctic expedition of the Russian Navy that took place from December 2019 to June 2020 on board the Russian Navy...     

A Local Source of Detritus for Rocks of the Ai Formation (Basal Level of the Lower Riphean Stratotype,Bashkir Uplift,Southern Urals): Evidence from U–Pb (LA-ICP-MS) Dating of Detrital Zircons

Doklady Earth Sciences - The results of U–Pb dating of detrital zircons extracted from rocks of the Ai Formation are presented. A provenance-signal of a local source with an age of about 2.07...     

Observations of global oscillations of the sun in the SOKOL experiment onboard the CORONAS-PHOTON satellite

The helioseismological experiment onboard the CORONAS-PHOTON satellite is intended for the study of characteristics and the internal structure of the Sun using the solar eigenmodes spectrum obtained by the measurement of fluctuations of the solar radiation intensity. This experiment is the continuation of investigations of solar global oscillations started onboard artificial satellites CORONAS-I and CORONAS-F. Measurements of fluctuations of the solar radiation intensity in seven optical ranges—from the near ultraviolet to infrared spectral regions—are carried out by the solar photometer SOKOL (SOlnechnye KOLebaniya (Solar Oscillations)) developed at IZMIRAN. Over an instrument operation period of more than 9 months, a large volume of the scientific information (more than 500 MB) has been obtained. The primary processing of obtained data was performed, and spectra of fluctuations of the solar radiation intensity were constructed. On the basis of part of the processed information obtained by the photometer SOKOL, and data of the experiment DIFOS (Differential Oscillations of the Sun) onboard the artificial satellite CORONAS-F, the dependence of the relative amplitude of oscillations on the wavelength of the observation was determined.