Detrital zircon ages of Cambrian and Devonian sandstones from Estonia, central Baltica: a possible link to Avalonia during the Late Neoproterozoic

Põldvere, Anne; Isozaki, Yukio; Bauert, Heikki; Kirs, Juho; Aoki, Kazumasa; Sakata, Shuhei; Hirata, Takafumi

doi:10.1080/11035897.2013.873986

Cited by 14 publications

(11 citation statements)

References 23 publications

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“…Preliminary U-Pb studies of detrital zircons retrieved from Ediacaran and Cambrian rocks on the Baltica's Lublin slope beside the expectable 'Baltican' ages also revealed the presence of 0.75-0.55 Ga age clusters (Valverede-Vaquero et al 2000;Żelaźniewicz et al 2004. These results concur with the same age group which was determined in the zircons populations from the lower Cambrian clastics of the Baltic Basin in Estonia and suggest a possible link between Baltica and Avalonia/Cadomia in the late Neoproterozoic (Pöldvere et al 2014).…”

Section: East European Craton (Ecc)/east European Platform Slopesupporting

confidence: 91%

“…They revealed rather rare presence of grains dated at 1.2-0.9 Ga but far more frequent were grains that yielded U-Pb ages between 0.7 and 0.55 Ga (Belka et al 2000;Valverde-Vaquero et al 2000;Żelaźniewicz et al 2009). Actually, the same 'non-Baltican' age cluster was reported for the zircons of uncertain provenance retrieved from lower Cambrian rocks in Estonia (Pöldvere et al 2014). The latter findings bring into light the location(s) of late Neoproterozoic source(s) that delivered clastic material to basins developed on Baltica, not only in the proximity to its TESZ margin.…”

Section: Introductionsupporting

confidence: 73%

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Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Żelaźniewicz

Oberc-Dziedzic

Sláma

2020

Int J Earth Sci (Geol Rundsch)

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In the supercontinent of Rodinia, Baltica occurred next to Amazonia, then the two drifted away when Rodinia broke up. By the end of the Neoproterozoic, Baltica became an independent continent. At that time, Timanide orogen developed at its modern northeastern margin. In most paleogeographical reconstructions, the opposite (SW, Tornquist) edge faced the Tornquist Ocean and remained just a passive margin till the arrival of the Gondwana-born East Avalonia in the late Ordovician. However, preliminary isotopic studies of detrital zircons from the Tornquist passive margin succession hinted that rock components of Gondwana derivation reached Baltica already in the early Cambrian. In this paper, we examine 18 drill-cores of Ediacaran-Cambrian and Ordovician siliciclastic rocks from the tectonostratigraphic units along the SW-NE transect from Upper Silesia (USB) via Małopolska (MB) and the Holy Cross Mts (HCM) to the East European Platform (EEP), SE Poland, in terms of the provenance data gained from the LA-ICP-MS and SHRIMP analyses of 32 zircon samples. Rocks from all the units revealed abundant Cadomian 0.7-0.55 Ga detrital zircons (15-50% of the total analyzed grains) and other grains that yielded peaks at 0.9-1.2, 1.4-1.6, 1.8-2.2, 2.7-3.0 Ga assignable to Baltica rather than Amazonia. Such age spectra in the USB, HCM and EEP prove the proximity of peripheral (peri-Gondwanan) fragments of the Cadomian orogen to Baltica. These fragments formed the Teissyere-Tornquist Terrane Assemblage (TTA) that obliquely docked and overrode the thinned southwestern edge of Baltica which earlier accumulated Neoproterozoic rift and passive margin deposits. Our data show that in the late Ediacaran-early Cambrian, parts of the Cadomian orogenic belt became accreted to Baltica.

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Section: East European Craton (Ecc)/east European Platform Slopesupporting

confidence: 91%

Section: Introductionsupporting

confidence: 73%

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Żelaźniewicz

Oberc-Dziedzic

Sláma

2020

Int J Earth Sci (Geol Rundsch)

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“…The derivation of Neoproterozoic detrital zircon from rocks similar to the Egersund dolerite dykes of southern Norway [616 ± 3 Ma (Bingen et al ., )] has been considered improbable because no coeval zircon‐bearing rocks have been found in SW Scandinavia (Kristoffersen et al ., ; Põldvere et al ., ). However, the original rock assemblages from which the Neoproterozoic sedimentary rocks were sourced are not known and cannot be studied in situ.…”

Section: Provenance Of Late Neoproterozoic Zirconmentioning

confidence: 97%

Rare late Neoproterozoic detritus in SW Scandinavia as a response to distant tectonic processes

Sláma

2016

Terra Nova

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Rare late Neoproterozoic (Cryogenian and Ediacaran) detrital zircons are detected in sedimentary sequences of Ediacaran to Carboniferous age in SW Scandinavia. New data on five samples of clastic metasediment corroborate their presence. Three distinct sources are proposed for late Neoproterozoic zircons based on new and literature data: (1) rift-related magmatism along the W margin of Baltica connected with the opening of Iapetus in the Neoproterozoic, (2) the Neoproterozoic to Cambrian Timanian orogeny at the NE margin of Baltica and (3) Cadomian terranes incorporated into the Variscan orogen accreted from the south to Laurussia during the Devonian and Carboniferous. The appearance of late Neoproterozoic detritus, which is otherwise exotic to Baltica, is therefore bound to tectonic processes active at the margins of the palaeocontinent. In a broader perspective, rare detrital zircon populations, when confirmed as genuine, are extremely valuable provenance indicators.

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“…However, whilst there are numerous provenance studies of Mesoproterozoic-Paleozoic successions of the Scandinavian Caledonides, which predominantly represented a marginal part of Baltica during the latest Precambrian-earliest Paleozoic (e.g., Andresen et al 2014;Gee et al 2014Gee et al , 2015Slama & Pedersen 2015;Slama 2016;Zhang et al 2015 and references therein), there are only few provenance studies of the clastic succession of the interior part of Baltica, occupied by the East European Platform. Previous work includes U-Pb dating of detrital zircons from the Upper Mesoproterozoic succession of the Pasha-Ladoga basin (Kuptsova et al 2011), a U-Pb detrital zircon study of Middle Cambrian-Devonian strata carried out by Miller et al (2011), and the dating of several samples from Ediacaran-Devonian strata from central Estonia (Isozaki et al 2014;Poldvere et al 2014). The only detrital zircon studies focused on the Leningrad region of the East European Platform in NW Russia are represented by recent preliminary studies published by Ivleva et al (2016), Ivleva et al (2018).…”

Section: Introductionmentioning

confidence: 99%

Detrital zircon record of the Mesoproterozoic to Lower Cambrian sequences of NW Russia: implications for the paleogeography of the Baltic interior

Ershova

Ivleva

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et al. 2019

GFF

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Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb detrital zircon isotope data from Mesoproterozoic to Lower Cambrian strata of the St Petersburg region are used to characterize the paleogeographic and tectonic evolution of the Baltica continent. We dated fifteen samples and divided them into three groups based on their distribution of detrital zircons. The first group (comprising Lower Mesoproterozoic rocks) is dominated by Early Mesoproterozoic and Late Paleoproterozoic zircons, mostly derived from weathering of proximal source region including rapakivi granites exposed across the neighboring Baltic Shield. The second group includes Upper Ediacaran samples (Redkino and Kotlin Regional Stages), with major zircon populations ranging in age between 1970-1850 and 1600-1550 Ma, respectively, correlating with magmatic and metamorphic events within the Svecofennian Orogeny and rapakivi granite igneous activity in the interior of Fennoscandia. The third group of samples, collected from both the uppermost Ediacaran and lowermost Cambrian deposits (Kotlin, Lontova and Dominopol Regional Stages), contains older Paleo-Mesoproterozoic zircons as well as Late Neoproterozoic-earliest Cambrian zircons, indicating a Timanian source area and exhibiting a age spectra similar to spectra for coeval rocks of the Scandinavian Caledonides. Therefore, we conclude that reworking and transport of continental detritus from the Timanian Orogen began during Late Ediacaran, earlier than previously supposed, with transport of Timanian detritus not only to the marginal part of Baltica (known from the Scandinavian Caledonides), but also to the distal interior of Baltica.

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Detrital zircon ages of Cambrian and Devonian sandstones from Estonia, central Baltica: a possible link to Avalonia during the Late Neoproterozoic

Cited by 14 publications

References 23 publications

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Baltica and the Cadomian orogen in the Ediacaran–Cambrian: a perspective from SE Poland

Rare late Neoproterozoic detritus in SW Scandinavia as a response to distant tectonic processes

Detrital zircon record of the Mesoproterozoic to Lower Cambrian sequences of NW Russia: implications for the paleogeography of the Baltic interior

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