The geodynamic evolution of the Italian South Alpine basement from the Ediacaran to the Carboniferous: Was the South Alpine terrane part of the peri-Gondwana arc-forming terranes?

Arboit, Francesco; Chew, David; Visonà, Dario; Massironi, Matteo; Sciascia, Federico; Benedetti, G.; Rodani, S.

doi:10.1016/j.gr.2018.08.005

Cited by 20 publications

(4 citation statements)

References 75 publications

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“…This recently introduced Ordovician age is favorable in comparison to the previously imposed Silurian age (Himmerkus et al 2009;. The aforementioned age bracket has similarities with the Neoproterozoic-Silurian eastern South Alpine basement (explained by the up-section age variations due to a temporal change in provenance; Arboit et al 2019). In the eastern Mediterranean, the rocks of similar age which include an almost complete pre-Variscan sedimentary sequence (from Ordovician) are referred to as the Istanbul terrane, whereas the Zonguldak terrane records a hiatus between Silurian and Devonian sequences (Ustaömer et al 2011).…”

Section: Regional Tectonic Framework and Pre-alpine Configurationmentioning

confidence: 80%

“…2013; Žák and Sláma 2017;Stephan et al 2018Stephan et al , 2019Golonka et al 2019), (ii) south European Eo-Cimmerian Minoan terranes (Franz et al 2005;Zulauf et al 2007Zulauf et al , 2014Zulauf et al , 2018Zlatkin et al 2014;Dörr et al 2015) including (iii) East Mediterranean basements (e.g., Ustaömer et al 2011;Koralay et al 2012). In between, (iv) a few considerably large segments of these late Pan African to Early Paleozoic terranes are incorporated in Alpine Europe -its central domain (e.g., Winchester et al 2002;Scheiber et al 2014;Zurbriggen 2015;Siegesmund et al 2018;Arboit et al 2019; Text-fig. 1).…”

Section: Regional Tectonic Framework and Pre-alpine Configurationmentioning

confidence: 99%

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Acta Geologica Polonica

Spahić¹,

Bojić²,

Popović³

et al. 2020

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In the Balkans, the Serbo-Macedonian Unit (SMU), Serbia, is thrust bounded by the composite Tethyan Vardar Zone and the Carpatho-Balkanides. The SMU actually emerges from beneath the Neoalpine Miocene–Pliocene deposits. Both provenance and geodynamic position of the SMU are poorly known and still debated. This paper reviews the data hitherto published and includes some new field data interpretations. The SMU is composed of a Neoproterozoic–Cambrian high-grade (para- and ortho-) gneiss with peraluminous magmatic arc components (560–470 Ma). The SMU is in the contact with Neoproterozoic upper Ordovician–Carboniferous low-grade metasedimentary succession of an accretionary wedge assembly represented by the Supragetic basement. The SMU basement became folded, sheared and metamorphosed around 490–450 Ma. Paleomagnetic data point to high southern latitudes and a peri-Gondwanan position of the SMU at that time, which concurs with glaciomarine evidence recorded from the upper Ordovician sediments at the base of an accretionary wedge succession. Based on the published data and field survey in the Stalać region, we correlate the SMU with the pre-Mesozoic gneiss terrane exposed in the Strona-Ceneri zone of the Alps. This terrane, identified as the Cenerian orogen of the Alaskan subduction type, developed at an active margin of Gondwana during middle Ordovician times. The SMU basement, with augen and migmatitic gneisses and arc-related peraluminous magmatic bodies, developed at this margin as part of the Cenerian belt or its equivalent. Such an orogenic edifice proved transient and in the earliest Silurian the SMU fragments drifted away being bound for Baltica (amalgamated Moesian microplate and Danubian terrane) to which they became accreted in the Carboniferous and included in the southern European branch of the Variscan orogen (Marginal Dacides/Carpatho-Balkanides). Despite considerable Variscan and Alpine reworking, the pre-Variscan, Cenerian-type crustal assembly along with an inferred boundary between the magmatic arc and the accretionary wedge, accompanied by back-arc/forearc deposits, are still decipherable in the Western Balkan countries.

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Section: Regional Tectonic Framework and Pre-alpine Configurationmentioning

confidence: 80%

Section: Regional Tectonic Framework and Pre-alpine Configurationmentioning

confidence: 99%

Acta Geologica Polonica

Spahić¹,

Bojić²,

Popović³

et al. 2020

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“…The duration of the analysis was 18 s per shot, with 8 s between each shot. In Arboit et al (2019), a more detailed elaboration of the analytical technique can be found. NIST612 was used as element standard.…”

Section: Methodsmentioning

confidence: 99%

Characterisation and geodynamic setting of the 1 Ga granitoids of the Karagwe-Ankole belt (KAB), Rwanda

Clercq

Chew

O’Sullivan

et al. 2021

Precambrian Research

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“…However, no traces of Zr enrichments, ash layers or cryptotephra have been detected. Therefore, according to Rakociński et al (2022), very large Hg anomalies in the Carnic Alps were connected to regional submarine (arc) volcanism and hydrothermal activity, which was associated with the collision of the peri-Gondwanan terranes with Laurussia during the early phase of the Variscan orogeny (see Stampfli et al 2002Stampfli et al , 2011Arboit et al 2008;von Raumer & Stampfli, 2008).…”

Section: C Mercury As An Indicator Of Volcanic Activitymentioning

confidence: 99%

Weak and intermittent anoxia during the mid-Tournaisian (Mississippian) anoxic event in the Montagne Noire, France

Rakociński

Książak²,

Pisarzowska³

et al. 2023

Geol. Mag.

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The mid-Tournaisian black radiolarian cherts of the Lydiennes Formation are exposed in deep-shelf successions of the Puech de la Suque and Col des Tribes sections of the Mont Peyroux Nappe area in the Montagne Noire, southern France. This interval represents the mid-Tournaisian anoxic event that is also termed the Lower Alum Shale Event. This event is associated with a global marine transgression that was characterized by increased productivity and drastic facies changes from pelagic carbonate sedimentation to the widespread deposition of black organic-rich siliceous shales and radiolarites in many parts of the world. In the present study, high-resolution inorganic geochemistry and framboidal pyrite analyses were employed to decipher changes in depositional conditions during the mid-Tournaisian anoxic event in the Montagne Noire. The results show that the total organic carbon contents of sediments associated with the Lower Alum Shale Event vary from 0.09 to 1.9 wt %. These low to moderate total organic carbon contents, high U/Th, low Corg/P and intermediate V/Cr ratios, enrichment in redox-sensitive trace elements, such as U, Mo and V, as well as varying sizes of pyrite framboids, indicate periodic dysoxic to anoxic bottom-water conditions during deposition of the studied sediments. Anomalous Hg spikes (>500 ppb) are also reported in the mid-Tournaisian deep-water marine succession of the Montagne Noire in the present study, which confirm a possible influence of increased regional volcanic activity during this environmental turnover.

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The geodynamic evolution of the Italian South Alpine basement from the Ediacaran to the Carboniferous: Was the South Alpine terrane part of the peri-Gondwana arc-forming terranes?

Cited by 20 publications

References 75 publications

Acta Geologica Polonica

Acta Geologica Polonica

Characterisation and geodynamic setting of the 1 Ga granitoids of the Karagwe-Ankole belt (KAB), Rwanda

Weak and intermittent anoxia during the mid-Tournaisian (Mississippian) anoxic event in the Montagne Noire, France

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