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

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

<p>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–Pb LA–ICP–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?).</p><p>U–Pb ages of detrital zircon grains have been obtained for two samples – the Upper Permian and Lower Triassic age, which were taken in the proximity to the Permian–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–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.</p><p>This study is supported by the Russian Foundation for Basic Research (project no. 18-05-00593).</p>

Stratigraphic Correlation of Permian–Triassic Red Beds, Moscow Basin, East European Platform: First Detrital Zircon U–Pb Dating Results

2020 ◽  
Vol 492 (1) ◽  
pp. 306-310
Author(s):  
A. V. Chistyakova ◽  
R. V. Veselovskiy ◽  
D. V. Semenova ◽  
V. P. Kovach ◽  
E. V. Adamskaya ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
East European Platform ◽  
Stratigraphic Correlation ◽  
Red Beds ◽  
East European ◽  
Moscow Basin

Paleomagnetism and magnetostratigraphy of the Permian-Triassic red beds, East European Platform, Russia

2020 ◽  
Author(s):  
Anna Fetisova ◽  
Roman Veselovskiy ◽  
Valeriy Golubev ◽  
Alvina Chistyakova ◽  
Mikhail Arefiev ◽  
...  
Keyword(s):  
East European Platform ◽  
Rock Magnetism ◽  
Detrital Zircons ◽  
Time Interval ◽  
Red Beds ◽  
Triassic Boundary ◽  
East European ◽  
Dipole Configuration ◽  
Geomagnetic Polarity ◽  
Geomagnetic Polarity Time Scale

<p>We present the combining results of 6-year comprehensive studies, which have been done on fifteen key sections the Permian-Triassic red beds located within the Russian Basin (East European platform). In our presentation we discuss some aspects of paleomagnetism and rock magnetism of sediments, such as inclination shallowing, anisotropy of magnetic susceptibility and so on. The main achievement of our work is getting the new mean Permian-Triassic paleomagnetic pole for the East European platform as well as calculation of its Late Permian and Early Triassic poles. We also present new version of the magnetostratigraphic correlation of studied sections within the Russian Basin and with Global Geomagnetic Polarity Time Scale, taking into account obtained results of U-Pb LA-ICPMS dating of detrital zircons and paleontological constraints. One of the most intriguing conclusions of our work is a suggestion about the existing of quite long-lasting time interval of non-GAD (Geocentric Axial Dipole) configuration of the Earth's magnetic field close to the Permian-Triassic boundary, evidences of which we have found in some of studied P-Tr sections. This study is supported by the grant of the RFBR (18-05-00593).</p>

Ecdysozoan-like sclerites among Ediacaran microfossils

2015 ◽  
Vol 152 (6) ◽  
pp. 1145-1148 ◽  
Author(s):  
MAŁGORZATA MOCZYDŁOWSKA ◽  
GRAHAM E. BUDD ◽  
HEDA AGIĆ
Keyword(s):  
Fossil Record ◽  
East European Platform ◽  
Cambrian Explosion ◽  
East European ◽  
Stratigraphic Position ◽  
Cambrian System

AbstractWe report the occurrence of organically preserved microfossils from the subsurface Ediacaran strata overlying the East European Platform in Poland, in the form of sclerites and cuticle fragments of larger organisms. They are morphologically similar to those known from Cambrian strata and associated with various metazoan fossils of recognized phyla. The Ediacaran age of the microfossils is evident from the stratigraphic position below the base of the Cambrian System and above the isotopically dated tuff layers at c. 551±4Ma. Within this strata interval, other characteristic Ediacaran microorganisms co-occur such as cyanobacteria, vendotaenids, microalgae, Ceratophyton, Valkyria and macroscopic annelidan Sabellidites. The recent contributions of organic sclerites in revealing the scope of the Cambrian explosion are therefore also potentially extendable back to the Ediacaran Period when animals first appear in the fossil record.

Radioisotopic and biostratigraphic constraints on the classical Middle–Upper Permian succession and tetrapod fauna of the Moscow syneclise, Russia

Geology ◽  
2020 ◽  
Vol 48 (7) ◽  
pp. 742-747 ◽  
Author(s):  
V.I. Davydov ◽  
M.P. Arefiev ◽  
V.K. Golubev ◽  
E.V. Karasev ◽  
M.A. Naumcheva ◽  
...  
Keyword(s):  
East European Platform ◽  
Thermal Ionization Mass Spectrometry ◽  
Upper Permian ◽  
Ionization Mass ◽  
East European ◽  
Geologic Time ◽  
Permian System ◽  
Moscow Syneclise ◽  
Geologic Time Scale ◽  
Thermal Ionization Mass

Abstract The East European Platform and the PreUrals are the regions where the Permian System was first established, but the provincialism of fossils and lack of radioisotopic age control have prevented the use there of the regional Permian subdivisions used outside of the region. We report the first U-Pb zircon chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) age of 253.95 ± 0.06 Ma for a volcanic tuff from the terrestrial upper part of the lower Vyatkian Regional Stage in the Moscow syneclise (Russia). This age greatly improves the correlation of the East European Platform and the PreUrals with the international geologic time scale, and contributes to our understanding of sedimentation within the Permian-Triassic transition in the studied region. The new radioisotopic age integrated within the regional chronostratigraphic framework reveals the synchrony in extinction of faunas of the Dinocephalian superassemblage in the studied region with that in South Africa.

scholarly journals Biostratigraphic significance of the tetrapod assem¬blages of the Timan- North Urals region and adjacent areas

2019 ◽  
pp. 5-8
Author(s):  
I. V. Novikov
Keyword(s):  
East European Platform ◽  
Middle Triassic ◽  
Lower Triassic ◽  
Middle Part ◽  
East European ◽  
Moscow Syneclise ◽  
Assem Blages

New and specified data on the composition of the Triassic tetrapod assemblages of the Timan-North Urals region, the Mezen syneclise and the eastern part of the Moscow syneclise have been given. The succession of the Triassic tetrapod communities known in this area includes eight assemblages, seven of which correspond to the contemporary communities of the terrestial vertebrates known from other regions of the East European platform and the Cisurals. The first assemblage, known from the basal Triassic of the Mezen and Moscow syneclises, is Early Induan in age. The second, third and fourth assemblages are dated by Early Olenekian age and typical for the middle part of the Early Tri-assic section of the Timan-North Urals region, the Mezen and Moscow syneclises. The Late Olenekian fifth and sixth assemblages characterize the upper part of the Lower Triassic of the Northern Cisurals, the Moscow and Mezen syneclises. The seventh assemblage characterizes the base of the Middle Triassic (Lower Anisian) of the Northern Cisurals and has no analogues in other regions of the platform and of the Cisurals. The eighth assemblage is known from the upper part of the Middle Triassic of the Northern Cisurals and is Late Ladinian in age.

scholarly journals Provenance of lower Palaeozoic metasediments of the East Odenwald (Mid-German-Crystalline Zone, Variscides)—a correlation with the East European Platform (Poland)

2021 ◽  
Author(s):  
Wolfgang Dörr ◽  
Eckhardt Stein ◽  
Ferdinand Kirchner ◽  
Henri Paul Meinaß ◽  
Felicitás Velledits
Keyword(s):  
East European Platform ◽  
Large Scale ◽  
Volcanic Rocks ◽  
Detrital Zircons ◽  
The South ◽  
Early Devonian ◽  
East European ◽  
Magmatic Arc ◽  
Tectonic Model ◽  
Lower Palaeozoic

AbstractU–Pb age spectra of detrital zircons related to the East European Platform could be traced in paragneiss through the whole Mid-German-Crystalline Zone (Variscides, Central Europe) from the Odenwald via the Spessart to the Ruhla crystalline forming an exotic unit between Armorica and Laurussia. The depositional ages of the paragneiss are defined by the youngest age of the detrital zircons and the oldest intrusion ages as Ordovician to Silurian. The Ediacaran dominated age spectrum of detrital zircons from the paragneiss of the East Odenwald suggests the latter to be derived from the shelf of the East European Platform (Baltica), which was influenced by the 1.5 Ga old detritus delivered from a giant intrusion (Mazury granitoid, Poland). The detrital zircon age spectrum of the lower Palaeozoic paragneiss of the East Odenwald and sandstone of the northern Holy Cross Mountains are identical. The pure Sveconorwegian spectrum of the lower Palaeozoic quartzite from the Spessart, (Kirchner and Albert Int J Earth Sci 2020) and the Ruhla (Zeh and Gerdes Gondwana Res 17:254–263, 2010) could be sourced from Bornholm and southern Sweden. A U–Pb age spectrum with 88% Palaeozoic detrital zircons from a volcano-sedimentary rock of the East Odenwald is interpreted to be derived from a Silurian magmatic arc (46%), which was probably generated during the drift of the Mid-German-Crystalline Zone micro-continent to the south. A tentative plate tectonic model of Mid-German-Crystalline Zone is presented taking into account (a) the East European Platform related age spectra of the detrital zircons (b) the Ordovician to Silurian depositional age of the metasediments (c) the Silurian and Early Devonian intrusion age of the plutonic and volcanic rocks and (d) the U–Pb ages of the Middle Devonian high-grade metamorphism. The East European Platform-related part of the Mid-German-Crystalline Zone is interpreted as a micro-continent, which drifted through the Rheic Ocean to the south and collided with the Saxothuringian (Armorican Terrane Assemblage) during the Early Devonian. Such large-scale tectonic transport from the northern continent to the southern continent is also known from the SW Iberia, where Laurussia-related metasediments of the Rheic suture zone are explained by a large scale tectonic escape (Braid et al. J Geol Soc Lond 168:383–392, 2011).

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