The first evidence of Late Ordovician magmatism of the October Revolution Island (Severnaya Zemlya archipelago, Russian High Arctic): geochronology, geochemistry and geodynamic settings

Kurapov, Mikhail; Ershova, Victoria; Khudoley, A. K.; Makariev, Alexander; Makarieva, Elena

doi:10.17850/njg100-3-4

Cited by 6 publications

(7 citation statements)

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“…The next prominent zircon population lies between 470 and 420 Ma in age, with coeval magmatic events only reported from the Severnaya Zemlya archipelago (Kurapov et al, 2020;Lorenz et al, 2007;Prokopiev et al, 2019). Moreover, zircons of a similar age distribution are abundant within Ordovician-Carboniferous clastic rocks from the Severnaya Zemlya archipelago (V. Ershova et al, 2018;V.…”

Section: Provenance Of the Uppermost Triassic-cretaceous Clastic Succ...mentioning

confidence: 92%

Provenance of the Mesozoic Succession of Franz Josef Land (North‐Eastern Barents Sea): Paleogeographic and Tectonic Implications for the High Arctic

et al. 2022

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The Barents Sea sedimentary basin represents one of the key prospective regions for hydrocarbon resources in the Arctic realm (Figures 1a and 1b). However, while the Norwegian part of the Barents Sea is covered by a dense network of seismic lines and penetrated by numerous wells, the Russian portion is comparatively poorly studied. To date, the sedimentary succession of the Russian part has only been penetrated by a few wells drilled in the southern part of the basin and four wells drilled onshore across the Franz Josef Land (FJL) archipelago. FJL represents an important region, where the Mesozoic succession is exposed onshore for geological study (Figure 2b). Due to the lack of offshore wells, this archipelago represents the only area in the north-eastern Barents Sea where the Mesozoic succession can be directly described and sampled, offering vital insights into the geological evolution of this insufficient studied region.The deeper pre-Mesozoic succession of the north-eastern Barents Sea has been mainly constrained by seismic data (

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Section: Provenance Of the Uppermost Triassic-cretaceous Clastic Succ...mentioning

confidence: 92%

Provenance of the Mesozoic Succession of Franz Josef Land (North‐Eastern Barents Sea): Paleogeographic and Tectonic Implications for the High Arctic

et al. 2022

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“…Neoproterozoic to Cambrian rutiles (650-520 Ma) can be correlated with the main magmatic and metamorphic event within the Timanian orogen, which formed as a result of the latest Neoproterozoic to the earliest Cambrian orogeny along the northeatsern margin of Baltica (present day coordinates) ( [59,60] and refences therein). A prominent detrital rutile population comprising ages between 470 and 420 Ma could be possibly correlated with coeval magmatic and metamorphic events within the Severnaya Zemlya archipelago [61][62][63].…”

Section: Detrital Rutilementioning

confidence: 99%

Provenance of Detrital Rutiles from the Triassic–Jurassic Sandstones in Franz Josef Land (Barents Sea Region, Russian High Arctic): U-Pb Ages and Trace Element Geochemistry

Ershova,

Prokopiev,

Stockli

2024

Geosciences

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Provenance study plays an important role in paleogeographic and tectonic reconstructions. Detrital zircons are commonly used to identify sediment provenance; however, a wide range of detrital zircon ages in clastic rock often represent a fingerprint of reworked older terrigenous successions rather than ages of magmatism and metamorphism in the provenance area. This study focuses on the provenance of detrital rutile grains in the Triassic–Jurassic sandstones from Franz Josef Land and shows the importance of multiproxy approaches for provenance studies. Trace element data demonstrate that most rutile grains were sourced from metapelitic rocks, with a subordinate population having a metamafic origin. The Zr-in-rutile thermometer and U-Pb geochronology suggest that detrital rutile grains were predominantly derived from rocks that underwent amphibolite facies metamorphism during the Paleozoic era, with a predominance of the Carboniferous–Permian ages. Therefore, we suggest that the provenance area for the studied sandstones on Franz Josef Land has a similar geological history to the Taimyr region and Severnaya Zemlya archipelago. We propose that this crustal domain extends across the Kara Sea and forms the basement to the north and east of FJL, representing a proximal provenance for the studied Mesozoic terrigenous rocks. This domain experienced both Middle–Late Ordovician and Carboniferous–Permian metamorphism. The comparison of U-Pb dating and the geochemistry of rutile, U-Th/He, and U-Pb dating of zircons showed that detrital rutiles are the powerful toll in provenance restoration and can give additional constrains when a provenance area locates within collisional-convergent settings.

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“…In Svalbard, Caledonian deformation is recorded as several-tens of kilometers wide fold-and-thrust belts including blueschist-eclogite-facies metamorphism (Horsfield, 1972;Manby, 1986;Ohta et al, 1989Ohta et al, , 1995Dallmeyer et al, 1990;Harland et al, 1992;Witt-Nilsson et al, 1998;Johansson et al, 2004Johansson et al, , 2005. Caledonian metamorphism and magmatism are recorded as far east as Franz Joseph Land (Knudsen et al, 2019) and Severnaya Zemlya (Kurapov et al, 2020). Since Svalbard was until recently thought to have been assembled and accreted to Norway during the Caledonian Orogeny, the Caledonian suture was therefore proposed to run NE-SW through the Barents Sea (Breivik et al, 2005;Knudsen et al, 2019).…”

Section: Caledonian Orogenymentioning

confidence: 99%

Timanian Fold-and-Thrust Belt and Caledonian Overprint in the Selis Ridge Imaged by New 3D Seismic Attributes and Spectral Decomposition

Koehl

Polonio

Rojo

2023

tekt

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The present study is a detailed structural analysis of 3D seismic data in the Selis Ridge in the western Loppa High in the Norwegian Barents Sea, to which new seismic attributes and spectral decomposition were applied. The analysis reveals that pre-Devonian basement rocks are crosscut by a 40–50 kilometers wide, several kilometers thick, E–W- to WNW–ESE-striking fold-and-thrust belt, including a steep, kilometer-thick, top-SSW shear zone. The folds display dome- and trough-shaped geometries, the thrusts appear to have been reactivated dominantly as top-west structures, and the main shear zone warps over the top of the Selis Ridge. The fold-and-thrust belt is interpreted as part of the latest Neoproterozoic (ca. 650–550 Ma) Timanian Orogeny, which potentially reworked preexisting Neoproterozoic rift basins and highs, and was reworked during E–W Caledonian contraction in the Ordovician–Silurian. The results are analogous to recent findings in the northern Norwegian Barents Sea and Svalbard. The presented interpretation provides the basis for discussing Neoproterozoic–Paleozoic plate tectonics reconstructions, the influence of Precambrian–early Paleozoic structures on post-Caledonian fault complexes, the location of the Timanian and Caledonian suture zones, Neoproterozoic rifting, and the origin of the Seiland Igneous Province.

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The first evidence of Late Ordovician magmatism of the October Revolution Island (Severnaya Zemlya archipelago, Russian High Arctic): geochronology, geochemistry and geodynamic settings

Cited by 6 publications

References 0 publications

Provenance of the Mesozoic Succession of Franz Josef Land (North‐Eastern Barents Sea): Paleogeographic and Tectonic Implications for the High Arctic

Provenance of the Mesozoic Succession of Franz Josef Land (North‐Eastern Barents Sea): Paleogeographic and Tectonic Implications for the High Arctic

Provenance of Detrital Rutiles from the Triassic–Jurassic Sandstones in Franz Josef Land (Barents Sea Region, Russian High Arctic): U-Pb Ages and Trace Element Geochemistry

Timanian Fold-and-Thrust Belt and Caledonian Overprint in the Selis Ridge Imaged by New 3D Seismic Attributes and Spectral Decomposition

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