U–Pb geochronology and Hf isotope systematics of detrital zircon from the late Ediacaran Kalyus Beds (East European Platform): palaeogeographic evolution of southwestern Baltica and constraints on the Ediacaran biota

Francovschi, Ion; Grădinaru, Eugen; Li, Huan; Shumlyanskyy, Leonid; Ciobotaru, Valerian

doi:10.1016/j.precamres.2020.106062

Cited by 21 publications

(7 citation statements)

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“…This is additionally supported by palaeocurrent measurements (Contescu et al, 1966, this study) and by detrital zircon ages well over 1 Ga (Figure 11a,b), common for rocks of the East European Platform/ Craton (i.e. Bibikova et al, 2015;Francovschi et al, 2021;Shumlyanskyy et al, 2015). These characteristics and the presence of green clasts (e.g.…”

Section: And Sedimentary Routessupporting

confidence: 86%

“…Additionally, these ages, including those >800 Ma, are possibly derived from foreland units (Moesian Platform, Eastern European Platform/Craton and North Dobrogea; Figure 6a,b). Cambrian–Neo‐proterozoic ages (c. 500–570 Ma) were identified in the sedimentary cover of the East European Platform (Francovschi et al, 2021). The c. 430–670 Ma age cluster could represent internal sediment sources corresponding to the Getic and Bucovinian domains.…”

Section: Resultsmentioning

confidence: 99%

“…The exposed basement in the Ukrainian Shield contains zircons that yield mainly Proterozoic and Neo-archean ages (c. 1500, 2000and 2700Ma, Bibikova et al, 2013Shumlyanskyy et al, 2012Shumlyanskyy et al, , 2015. This signature is also recognizable in the western Neo-proterozoic sedimentary cover of the East European Craton (Francovschi et al, 2021;Roban et al, 2020;Żelaźniewicz et al, 2020).…”

Section: Review Of the Zircon U-pb Geochronology Of The Main Source A...mentioning

confidence: 93%

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Provenance of Oligocene lithic and quartz arenites of the East Carpathians: Understanding sediment routing systems on compressional basin margins

et al. 2022

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We present new sedimentological, petrographical, palaeontological and detrital zircon U-Pb data on late Oligocene-early Miocene sedimentary rocks of the thinskinned thrust belt of East Carpathians. These data were acquired to reconstruct the sedimentary routing system for two compositionally different turbidite fans made of the regionally extensive Kliwa and Fusaru formations. On the eastern margin of the Moldavides foreland basin, large low-gradient river systems draining the East European Platform provided well-sorted quartz-rich sand forming deltas on wide shallow shelves and thick Kliwa submarine fans. Due to the westward subduction of a thinned continental plate, the western basin margin was characterized by short, steep-gradient routing systems where sediment transport to deep water was mainly through hyperpycnal flows. The Getic and Bucovinian nappes of the East Carpathians and the exhumed Cretaceous-Early Palaeogene orogenic wedge fed Fusaru fans with poorly sorted lithic sand. The Fusaru fans trend northwards in the foredeep basin having an elongate depocentre, interfingering and then overlapping on the distal part of the Kliwa depositional system due to the eastward advance of the Carpathian fold-and-thrust belt. A smaller sediment input is supplied by southern continental areas (i.e. MoesianPlatform, North Dobrogea and potentially the Balkans). In general, the sandstone interfingering between distinct basin floor fan systems is less well documented because the facies would be similar and there are not many systems that have a distinct sediment provenance like Kliwa and Fusaru systems. This case study improves the understanding of regional palaeogeography and sedimentary routing systems and provides observations relevant here or elsewhere on the interfingering turbidite fan systems.

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Section: And Sedimentary Routessupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Review Of the Zircon U-pb Geochronology Of The Main Source A...mentioning

confidence: 93%

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Provenance of Oligocene lithic and quartz arenites of the East Carpathians: Understanding sediment routing systems on compressional basin margins

et al. 2022

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“…The unique U-Pb age spectrum of the East Odenwald with the 1.5 Ga peak (sample 5 and 6) correlates with that of the Ediacaran and lower Palaeozoic sandstones of the continental slope of Baltica (Poland, sample 7, Fig. 10C, Żelaźniewicz et al 2020) and with the U-Pb age spectrum of detrital zircons from the Ediacaran sediments of the EEP from Republic of Moldova (Francovschia et al 2021). The Ediacaran zircons of the sandstone from Łysogóry (sample 7) fit with the U-Pb ages of zircons from the Kaplonosy Tuff of the Lublin Basin (EEP) and from the volcanoclastic rocks of the Małopolska Block (TTA) in Poland (Fig.…”

Section: Provenancementioning

confidence: 68%

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

Dörr

Stein

Kirchner

et al. 2021

Int J Earth Sci (Geol Rundsch)

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U–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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“…Lomozov Member, Mogilev Formation, Mogilev-Podolsky Group, Upper Ediacaran. Also the lower part of the Nagoryany Formation (Dzhurzhevka Member) in Moldova, dated roughly to 555-551 Ma (Francovschi et al 2021).…”

Section: Finkoella Oblonga Sp Nov Figures 10mentioning

confidence: 99%

New Ediacaran fossils from the Ukraine, some with a putative tunicate relationship

Martyshyn

Uchman

2021

PalZ

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Sack-like body fossils Finkoella ukrainica gen. et sp. nov. and F. oblonga sp. nov., and reticulate fossil Pharyngomorpha reticulata gen. et sp. nov. are described from the upper Ediacaran shallow-marine deposits of Ukraine, which are no younger than 557 Ma. The first two resemble the flattened bodies of tunicates showing mainly the outline of tunica, while the third is considered as a fragment of the pharyngeal basket of a tunicate. F. ukrainica is represented by smaller individuals interpreted as juveniles, which may occur in clusters together with less numerous larger individuals. The larger forms are interpreted as adults, some of which show the preserved oral/atrial syphons and possible traces of internal organs bulging through the tunica. Moreover, Burykhia sp. from the uppermost Ediacaran of the same region is presented. This is the second and younger occurrence of the genus Burykhia, which is preserved as a possible fragment of the pharyngeal basket. All the fossils are preserved as the “death masks” between microbial mats, and their appearance depends partly on the relation to the parting surface on which they are observed. The presented new taxa along with the literature data reinforce the possibility that tunicates originated already in late Ediacaran.

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U–Pb geochronology and Hf isotope systematics of detrital zircon from the late Ediacaran Kalyus Beds (East European Platform): palaeogeographic evolution of southwestern Baltica and constraints on the Ediacaran biota

Cited by 21 publications

References 123 publications

Provenance of Oligocene lithic and quartz arenites of the East Carpathians: Understanding sediment routing systems on compressional basin margins

Provenance of Oligocene lithic and quartz arenites of the East Carpathians: Understanding sediment routing systems on compressional basin margins

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

New Ediacaran fossils from the Ukraine, some with a putative tunicate relationship

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