SEISMICITY of the RUSSIAN PART of EAST EUROPEAN PLATFORM and ADJACENT TERRITORIES in 2015

It is reported that 41 stationary seismic stations, 2 arrays, and 7 temporary seismic stations, located in the area of Novovoronezh and Kursk nuclear stations, monitored seismicity of the Russian territory of the East European Platform (EEP) in 2015. The registration capabilities of the seismic network at the EEP as a whole were estimated based on the average station noise level and the equation for the energy decay of seismic phases. Zones with the best capabilities have been allocated. A feature of seismicity in 2015 is the manifestation of earthquakes of moderate magnitudes (ML=2.7–3.9) in the peripheral regions (in the southwest, west, and northwest) and in zones associated with paleorift structures: in the southwest – with the Dnieper Donetsk and in the northeast – with the Kirov-Kazhim and Soligalich (Central Russian) aulacogenes. The results of the macroseismic survey are given for the earthquake in Poltava on February 2, 2015, with M=3.7; focal mechanisms of two earthquakes (03.02.2015 and 12.06.2015) are constructed. According to the data of the Latvian Center, an earthquake was recorded in the region of Lithuania bordering the Kaliningrad region. Weaker natural seismicity with ML≤2.5 was recorded in Karelia and the regions bordering with Finland, near the Kandalaksha Bay, near the Khibiny, and Lovozersky massifs on the Kola Peninsula, and on the territory of the Voronezh crystalline massif.

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EAST EUROPEAN PLATFORM. RUSSIAN PART

Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia] ◽

10.35540/1818-6254.2020.23.19 ◽

2020 ◽

pp. 199-207

Author(s):

Irina Gabsatarova ◽

B. Assinovskaya ◽

S. Baranov ◽

V. Karpinsky ◽

D. Mehryushev ◽

...

Keyword(s):

East European Platform ◽

Local Networks ◽

Strong Earthquakes ◽

Seismic Stations ◽

Voronezh Crystalline Massif ◽

East European ◽

Russian Territory ◽

Kandalaksha Bay ◽

International Monitoring ◽

Test Ban

It is reported that 22 stationary seismic stations, 2 arrays and 7 local seismic stations, located in the area of Novovoronezh and Kursk nuclear stations, monitor seismicity of the Russian territory of the East European platform (EEP). A new station Belogornoe with high registration class has been opened, which also belongs to the International Monitoring System for the Comprehensive Nuclear-Test-Ban Treaty (IMS CTBTO). The results of the microseismic noise study at the Pulkovo network stations and assessment of maximum distance of earthquake registration in the Voronezh crystalline massif are presented. In 2014, relatively strong earthquakes with М3.0 were not recorded on the Russian territory of the EEP. Weaker natural seismicity with M≤2 was recorded in Karelia and the border areas with Finland, near Kandalaksha Bay, near the Khibiny Massif on the Kola Peninsula and on the territory of the Voronezh Crystalline Massif. Observations of local networks near nuclear stations are aimed at updating the information on seismicity previously considered as an aseismic territory of the EEP. Man-made events were recorded in permanent quarries, the most powerful of them (M=3.1–3.3) were produced in the quarries on the territory of the Kursk magnetic anomaly.

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Seismogenic ancient structures of the central and northern part of the East European platform

Доклады Академии наук ◽

10.31857/s0869-56524894405-408 ◽

2019 ◽

Vol 489 (4) ◽

pp. 405-408

Author(s):

V. V. Adushkin ◽

I. A. Sanina ◽

G. N. Ivanchenko ◽

E. M. Gorbunova ◽

I. P. Gabsatarova ◽

...

Keyword(s):

Seismic Hazard ◽

Seismic Activity ◽

East European Platform ◽

Historical Earthquakes ◽

Seismic Array ◽

Small Aperture ◽

Seismic Stations ◽

East European

The analysis of the location of the epicenters of earthquakes that occurred in the central and northern part of the East European platform in 2009-2016, recorded by the seismic stations of the GS RAS and the small aperture seismic array of IGD RAS Mikhnevo was performed. The results obtained indirectly indicate the seismic activity of the Riphean structures of the region, disturbing the surface of the basement, and their possible activation at the present time. Available data on historical earthquakes also confirm their relevance to paleorifts. It seems important to take into account the position of the ancient aulacogens in assessing the seismic hazard of the East European platform.

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The morphology and ultrastructure of pollen grains of Scutasporites nanuki Utting (Sashiniaceae, Coniferales) from the Permian of the East-European Platform

Palaeobotany ◽

10.31111/palaeobotany/2012.3.5 ◽

2012 ◽

Vol 3 ◽

pp. 5-11

Author(s):

A. V. Gomankov ◽

V. F. Tarasevich

Keyword(s):

East European Platform ◽

Central Body ◽

Pollen Grains ◽

Irregular Shape ◽

East European ◽

Sem And Tem

Dispersed bisaccate pollen grains of Scutasporites nanuki were studied by means of LM, SEM and TEM. Sacci ultrastructure of these pollen grains was rather peculiar. Sacci were like a thin fi lmy fringe attached to the central body near the equator. They were fi lled with sporopollenin elements of irregular shape and various dimensions with equally various cavities between them. Such an ultrastructure is called as spongy. The morphology and ultrastructure of S. nanuki is discussed in the context of the evolution of early conifers.

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The quasiplatform sediments of the East European Platform

Russian Journal of Earth Sciences ◽

10.2205/2005es000171 ◽

2005 ◽

Vol 7 (5) ◽

pp. 1-12

Author(s):

M. A. Nagornyi ◽

V. G. Nikolaev

Keyword(s):

East European Platform ◽

East European

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Nd isotope composition of the Ediacaran and earliest Cambrian phosphorite nodules and Fe sulphide from the East European Platform

Geological Magazine ◽

10.1017/s0016756820000497 ◽

2020 ◽

Vol 157 (12) ◽

pp. 2081-2088

Author(s):

Sergey B Felitsyn ◽

Eugeny S. Bogomolov

Keyword(s):

East European Platform ◽

Isotope Composition ◽

Water Reservoir ◽

Secular Change ◽

Early Cambrian ◽

Iron Sulphide ◽

Nd Isotope ◽

East European ◽

Moscow Syneclise ◽

Nd Isotope Composition

AbstractAn enhanced concentration of phosphorus has been found at the stratigraphic level of the disappearance of Ediacaran taxa in two areas, the Cis-Dniester region and the Moscow syneclise, on the East European Platform (EEP). The isotope composition of neodymium was determined in Fe sulphide and phosphorite in the same beds. Measured εNd(t) values in diagenetic phosphate nodules are similar to those in iron sulphide from the same layer. During the Ediacaran − Early Cambrian, accumulation of radiogenic Nd in the epeiric basins on the EEP increased progressively from −17.9 and −19.4 in pyrite from the sequence bottom to −7.9 and −8.5 in the Early Cambrian pyrite of the central part of the EEP. The Ediacaran phosphate nodules show εNd(t) ranging from −12.9 to −15.0, while that in the Early Cambrian nodules is typically c. −9.0. These data indicate the secular change in Nd isotope composition of the water reservoir on the EEP from Ediacaran to Cambrian.

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Carboniferous Raindrop Imprints at the Southwestern Margin of the East European Platform

Lithology and Mineral Resources ◽

10.1023/b:limi.0000033823.40511.f5 ◽

2004 ◽

Vol 39 (4) ◽

pp. 382-387 ◽

Cited By ~ 2

Author(s):

V. F. Shul'ga

Keyword(s):

East European Platform ◽

East European ◽

Southwestern Margin

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Erratum to: “Fragment of the Chemical Structure of Type II and II-S Kerogen in the Upper Jurassic and Upper Devonian Formations of the East European Platform”

Geochemistry International ◽

10.1134/s0016702910070116 ◽

2010 ◽

Vol 48 (7) ◽

pp. 737-737

Author(s):

N. S. Burdel’naya ◽

D. A. Bushev

Keyword(s):

East European Platform ◽

Chemical Structure ◽

Upper Jurassic ◽

Upper Devonian ◽

Type Ii ◽

East European

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Stratigraphic correlation of the Permian-Triassic red beds constrained by detrital zircon geochronology: Moscow basin, East European platform

10.5194/egusphere-egu21-10294 ◽

2021 ◽

Author(s):

Alvina Chistyakova ◽

Roman Veselovskiy

Keyword(s):

Detrital Zircon ◽

East European Platform ◽

Lower Triassic ◽

Detrital Zircons ◽

Upper Permian ◽

Stratigraphic Correlation ◽

Red Beds ◽

East European ◽

Moscow Basin ◽

Stratigraphic Position

There's no doubt that nowadays detrital zircon U-Pb geochronology is actually required method of sedimentary basins analysis. Furthermore, this approach may have a lot of applications, such as a stratigraphic correlation. Here we present the first results of U&#8211;Pb LA&#8211;ICP&#8211;MS dating of detrital zircon from the Permian-Triassic red beds located within the Moscow Basin of the East European platform. Two outcrops have been studied: the Zhukov Ravine P/T boundary reference section and the Nedubrovo strata with uncertain stratigraphic position (uppermost Permian or lower Triassic?).U&#8211;Pb ages of detrital zircon grains have been obtained for two samples &#8211; the Upper Permian and Lower Triassic age, which were taken in the proximity to the Permian&#8211;Triassic boundary in the Zhukov Ravine. Corresponding age distributions show contrasting provenance of the studied sedimentary rocks, pointing out that principal change in source of clastic material occurred on the Paleozoic-Mesozoic boundary. It means that detrital zircon U&#8211;Pb geochronology can be used as an additional independent tool for stratigraphic correlation of the Permian-Triassic red beds, at least within the Moscow Basin. We demonstrate this in the case of the Nedubrovo section with debated (Permian or Triassic?) stratigraphic position: the obtained data on detrital zircons persuasively suggests Early Triassic age of the Nedubrovo strata.This study is supported by the Russian Foundation for Basic Research (project no. 18-05-00593).

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A new sedimentary cover model for the southern area of the East European Platform and the Pre-Caucasus based on decompensation gravity anomalies data

10.5194/egusphere-egu21-15625 ◽

2021 ◽

Author(s):

Mikhail Kaban ◽

Alexei Gvishiani ◽

Roman Sidorov ◽

Alexei Oshchenko ◽

Roman Krasnoperov

Keyword(s):

East European Platform ◽

Sedimentary Cover ◽

Gravity Anomalies ◽

Sedimentary Basins ◽

The Caucasus ◽

Near Surface ◽

New Model ◽

Origin And Evolution ◽

East European ◽

Bouguer Anomalies

A new model has been developed for the density and thickness of the sedimentary cover in a vast region at the junction of the southern part of the East European Platform, the Pre-Caucasus and some structures adjacent to the south, including the Caucasus. Structure and density of sedimentary basins was studied by employing the approach based on decompensation of gravity anomalies. Decompensative correction for gravity anomalies reduces the effect of deep masses providing compensation of near-surface density anomalies, in contrast to the conventional isostatic or Bouguer anomalies. . The new model of sediments, which implies their thickness and density, gives a more detailed description of the sedimentary thickness and density and reveals new features which were not or differently imaged by previous studies. It helps in better understanding of the origin and evolution of the basins and provides a background for further detailed geological and geophysical studies of the region.

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