A5082408066- Geological Studies and Exploration
- Paleontology and Stratigraphy of Fossils
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Geology and Paleoclimatology Research
- Solar and Space Plasma Dynamics
- Earthquake Detection and Analysis
- Astro and Planetary Science
- Planetary Science and Exploration
- Geological formations and processes
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Geological Formations and Processes Exploration
- Isotope Analysis in Ecology
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Photocathodes and Microchannel Plates
- Paleontology and Evolutionary Biology
- Marine Ecology and Invasive Species
- Marine Biology and Ecology Research
- High-pressure geophysics and materials
- Plasma Diagnostics and Applications
Geological Institute
2013-2024
Russian Academy of Sciences
2006-2023
Institute of the Earth’s Crust
2012-2023
Kazan Federal University
2014-2020
St Petersburg University
1993-2000
University of Tartu
2000
Uppsala University
1999
Lomonosov Moscow State University
1980
The extensive work carried out during more than a decade by the International Subcommission on Ordovician Stratigraphy has resulted in new global classification of System into three series and seven stages. Formal Global Boundary Stratotype Section Points (GSSPs) for all stages have been selected these stage names ratified Commission Stratigraphy. Based variety biostratigraphic data, units are correlated with chronostratigraphic standard regional classifications used UK, North America,...
Abstract The Great Ordovician Biodiversification Event (GOBE) was the most rapid and sustained increase in marine Phanerozoic biodiversity. What generated this biotic response across Palaeozoic seascapes is a matter of debate; several intrinsic extrinsic drivers have been suggested. One climate, which recent years has undergone paradigm shift from text-book example an extended greenhouse to interval with transient cooling intervals – at least during Late Ordovician. Here, we show first...
The disruption of a 150-km large asteroid filled the inner solar system with dust that cooled Earth and caused faunal turnovers.
Ordovician K-bentonite beds have a long history of investigation all around the world.They been reported from Gondwana, Argentine Precordillera, Yangtze Platform, Laurentia, Baltica, and numerous terrains between Gondwana which now constitute part Europe.In recent years several also discovered in Upper Siberian Platform.This discovery is significant not only for their value local regional chronostratigraphic correlation but global geochronology, paleogeography, paleotectonic paleoclimatic...
The Tremadocian (Early Ordovician) is currently considered a time span of greenhouse conditions with tropical water surface temperature estimates, interpolated from oxygen isotopes, approaching 40 °C. In the mid-latitude Baltoscandian Basin, conodonts displaying low δ18O values, which suggest high temperatures (>40 °C) in column, are contrast discovery contemporaneous glendonite clusters, pseudomorph ikaite (CaCO3·6H2O) traditionally as indicator near-freezing bottom-water conditions....
Abstract Trypanites is the most common macroboring with a global occurrence throughout Phanerozoic and eponym of ichnofacies. It has great value for recognition discontinuity hiatal surfaces on top carbonate hardgrounds. Four ichnospecies this ichnogenus are currently regarded as valid, while characteristic fifth form from early Palaeozoic frequently reported in open nomenclature. The latter commonly occurs lithic hardgrounds skeletal hard substrates (such stromatoporoids, bryozoans corals)...
Abstract– Numerous fossil meteorites and high concentrations of sediment‐dispersed extraterrestrial chromite (EC) grains with ordinary chondritic composition have previously been documented from 467 ± 1.6 Ma Middle Ordovician (Darriwilian) strata. These finds probably reflect a temporarily enhanced influx L‐chondritic matter, following the disruption L‐chondrite parent body in asteroid belt 470 6 Ma. In this study, Volkhovian‐Kundan limestone/marl succession at Lynna River, northwestern...
The Middle Darriwilian Isotopic Carbon Excursion (MDICE) is a global isotopic event described in sections from different palaeocontinents.Here we present new stable carbon data carbonates of ten parts the Baltoscandian Palaeobasin (Estonia, Latvia, Lithuania, Sweden, NW Russia).The definition MDICE as chemostratigraphic unit discussed, well subdivision its peak into two distinct peaks.The one longest events Palaeozoic.It was preceded by Lchondritic cosmic dust flow event, which may have been...
The formal stratigraphical subdivision of the Billingen-Volkhov interval is combined with informal detailed Volkhov sequence in eastern part Baltic-Ladoga Klint area.A correlation successions east and west Narva River provided, using for near-klint belt North Estonia bed nomenclature employed by Russian quarrymen, principal trends lithofacies changes study area are documented.The affinity sections northwestern Russia Central demonstrated two zones within Estonian Confacies Belt distinguished.
The Ordovician Period has emerged as a highly dynamic time in Earth history.Comprehensive work on chrono, chemo and biostratigraphy resulted an overall wellconstrained systemic framework, but several local successions around the globe still await detailed analysis many respects.Herein we perform highresolution of abiotic biotic signals Lynna River section, key locality northwestern Russia.As this section been pivotal documenting temporal evolution Great Biodiversification Event Baltica,...
Abstract Billingenian and lower Volkhovian strata are known in northwestern Russia under the informal name "Dikari". This stratigraphic interval consists mostly of hard, bedded limestones, which have been quarried for more than two centuries. About 15 units within "Dikari" recognized on basis differences lithology, bioturbation character, hardground surfaces. Some them can easily be traced eastern part Baltic‐Ladoga Glint over a distance 250 km. A detailed lithostratigraphic nomenclature...