Cambrian sedimentary basins of northern Gondwana as geodynamic markers of incipient opening of the Rheic Ocean

Syahputra, Reza; Žák, Jiří; Nance, R. Damian

doi:10.1016/j.gr.2021.10.004

Cited by 15 publications

(6 citation statements)

References 108 publications

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“…This resulted in subduction-accretion processes in the frontal parts of the CENO and a dextral transform regime in the CADO realm as the proto-Rheic oceanic plate moved east. Recent ideas of Syahputra et al (2022), who proposed that the Rheic ocean grew along a broadly N-S trending ridge superimposed on proto-Rheic oceanic crust (see Fig. 3 and also Murphy et al, 2006), kinematically fit this scenario.…”

Section: O L S a X T Bmentioning

confidence: 69%

The role of the proto-Alpine Cenerian Orogen in the Avalonian- Cadomian belt

Finger

Riegler

2023

Austrian Journal of Earth Sciences

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The proto-Alpine Cenerian orogen (Ediacaran-Ordovician) and the Cadomian orogen (Ediacaran-Cambrian), remnants of which are exposed in the central European Variscides, should be defined as two distinct and spatially separated coastal orogens within the Avalonian-Cadomian belt. The Cadomian orogen originally lay in front of the Sahara metacraton. It underwent a change from an active to a passive margin setting during the Cambrian. The Cenerian orogen, represented by intra-Alpine rocks, was located farther east near the Arabian Nubian Shield, from where it inherited a characteristic Tonian/Stenian detrital zircon signal. Subduction persisted in the Cenerian Orogen until the Ordovician. The Cadomian orogen was akin to Andean type whereas the Cenerian orogen was more akin to Alaskan type. This paper explores why the two orogens have such different characteristics and tectonic evolutions despite their probable proximity in the Avalonian-Cadomian belt. One explanation could be that they were at nearly right-angles to each other due to a strong concave bending of the northern Gondwana margin ahead of the Arabian-Nubian Shield.

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Section: O L S a X T Bmentioning

confidence: 69%

The role of the proto-Alpine Cenerian Orogen in the Avalonian- Cadomian belt

Finger

Riegler

2023

Austrian Journal of Earth Sciences

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“…First, the Rheic Ocean began to open, with rifting orientated broadly NNE‐SSW, with the north and central regions of Gondwana uplifted as a rift shoulder between ca. 0.51 and 0.50 Ga (Bingen et al, 2009; De Waele et al, 2009; Syahputra et al, 2021), with syn‐rift unconformities forming between Early and Middle Cambrian units within the Anti‐Atlas and Meseta, below the shelf‐wide base Miaolingian transgression (Álvaro, 2014; Álvaro et al, 2014; Destombes, 1985; Elicki et al, 2013; Landing et al, 2006). The uplift of Gondwana led to erosion of the voluminous Pan‐African foreland basins and orogenic belts; triggering the first major episode of sedimentary recycling.…”

Section: Discussionmentioning

confidence: 99%

“…Following the culmination of the Pan‐African and Cadomian orogenies in Ediacaran to Early Cambrian times a passive margin developed along the north Gondwana margin. Rifting along the former Cadomian–Avalonian arc resulted in the opening of the Rheic Ocean and rifting of Avalonia from Gondwana in late Cambrian–early Ordovician times (Díez Fernández et al, 2012; Hajná et al, 2018; Linnemann et al, 2007; Nance et al, 2010; Syahputra et al, 2021; von Raumer & Stampfli, 2008). The development of Cambro–Ordovician rift basins across the north Gondwana shelf was associated with bimodal and perialkaline magmatism between ca.…”

Section: Geological Settingmentioning

confidence: 99%

‘I hate sand … it gets everywhere’—Phanerozoic sedimentary recycling from NW Africa

et al. 2022

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Over 10,000 published detrital zircon ages have been reprocessed (applying a +10% normal and reverse concordance range) and analysed to understand the evolution of the detrital zircon record of north-west Africa during the Phanerozoic. Using dissimilarity and clustering analysis, shifts in detrital zircon populations allow interpretation of the evolution of source regions and source to sink systems throughout the Phanerozoic within the West Gondwana superfan. Previous thermochronology and field studies conducted across north-west Africa indicate significant and sustained shifts in source regions in Meso-Cenozoic times which are not recorded in the detrital zircon geochronology record. This discrepancy F I G U R E 2 U-Pb ages of detrtial zircons of potential source areas, based on lower Palaeozoic detrital zircon spectra of potential source areas. References for each source area can be found in Appendix-Source Region References. All regions have peaks within the Ediacaran linked to the Pan-African Orogenies, with the distribution of Mesoproterozoic and Palaeoproterozoic ages being key to differentiate the Gondwana source regions.

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“…1a and 1b), are widely accepted to record deposition in shallow seas on the flanks of an ocean bordering the northern margin of Gondwana. In recent years, most studies relate the Ordovician rock sequences of the European massifs to the opening of the Rheic Ocean (Linnemann et al 2007;Linnemann et al 2008aLinnemann et al , 2008bNance & Linnemann, 2008;Sanchez-Garcıa et al 2010;Nance et al 2012;Gutiérrez-Marco et al 2019;Dabard et al 2021;Syahputra et al 2022;Alvaro et al 2023). These works typically suggest Cambrian rifting was the precursor to ocean ridge incision with opening of the Rheic Ocean by the mid-Ordovician.…”

Section: Introductionmentioning

confidence: 99%

Ordovician sedimentation and basin development in the North Armorican Massif, NW France: Field evidence from the northern Cotentin Peninsula

Went

2023

Geol. Mag.

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Field evidence from the northern Cotentin Peninsula and regional data are used to construct a tectono-stratigraphic model for the Ordovician which characterizes basin development in the North Armorican Massif. In La Hague, 15 m of transgressive marine sandstone belongs to the Dapingian age Grès Armoricain Formation which onlaps lower Cambrian, rift-fill deposits via an unconformity. Approximately 450 m of overlying Darriwilian strata are dominated by shallow marine sandstone showing hummocky cross-stratification with subordinate shales containing trace and body fossils. Together, these facies support an interpretation of offshore shallow marine strata overlying a break-up unconformity. Regional analysis indicates the time gap at the unconformity is 20–40 Ma and formed from crustal upwarping, which was greatest in the north of the Armorican Massif. Dapingian strata (Grès Armoricain) thins irregularly to the north (0–94 m), interpreted to reflect passive onlap onto residual relief associated with the uplift and the initiation of thermal subsidence on the margin. The succeeding Darriwilian strata (Schistes de Beaumont to Grès de May) conversely display a steady thickening (161–623 m) to the north, the stratal patterns suggesting that from the Darriwilian onwards, the ocean basin to the north was firmly established as the main locus of subsidence on the continental margin.

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Cambrian sedimentary basins of northern Gondwana as geodynamic markers of incipient opening of the Rheic Ocean

Cited by 15 publications

References 108 publications

The role of the proto-Alpine Cenerian Orogen in the Avalonian- Cadomian belt

The role of the proto-Alpine Cenerian Orogen in the Avalonian- Cadomian belt

‘I hate sand … it gets everywhere’—Phanerozoic sedimentary recycling from NW Africa

Ordovician sedimentation and basin development in the North Armorican Massif, NW France: Field evidence from the northern Cotentin Peninsula

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