Journal: Gondwana Research

Abbreviation

Gondwana res.

Publisher

Elsevier

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ISSN

1342-937X
1878-0571

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Publications 1 - 10 of 44
  • Reconciling regional continuity with local variability in structure, uplift and exhumation of the Timor orogen
    Item type: Journal Article
    Tate, Garrett W.; McQuarrie, Nadine; Tiranda, Herwin; et al. (2017)
    Gondwana Research
  • The mid-Cretaceous bauxites of SE France: Geochemistry, U-Pb zircon dating and their implications for the paleogeography at the junction between Alpine Tethys and Pyrenean Rift
    Item type: Journal Article
    Mondillo, Nicola; Chelle-Michou, Cyril; Putzolu, Francesco; et al. (2025)
    Gondwana Research
    Karst bauxites mark episodic exhumation of carbonate platforms, thus providing key information for basin analysis and paleoclimate processes at the regional to continental scale. Most karst bauxite deposits of SE France lie between Jurassic platform carbonates in the footwall and Upper Cretaceous marine to continental sediments in the hanging wall. These deposits delineate a stratigraphic gap coeval with the Durance extensional tectonics, which led to the separation of the Vocontian and South Provence Basins, and shaped the junction between the Alpine Tethys and the Pyrenean Rift. Our new mineralogical and geochemical data show that SE France karst bauxites were affected by in-situ weathering and alteration in conjunction to sedimentary reworking. Statistical analysis of geochemical data indicates that bauxite deposits have a similar chemical footprint, likely pointing to a common and long-lasting bauxitization process. New U-Pb zircon data from the Provence deposits confirm that the source material for the SE France bauxites is to be primarily found in the Hercynian basement. The data suggest the presence of an additional exotic zircon source deriving either from Avalonia and/or Baltica. The comparison of the new U-Pb zircon data with those on coeval bauxites evidences a marked difference between the SE France and the Sardinian deposits. This difference indicates diversification in the detritus provenance of the two areas since the Lower Cretaceous, setting the bauxites of SE France and Sardinia in lateral continuity with the bauxites occurring on the two opposite margins of the Pyrenean Rift, and supporting the development of these deposits on the shoulders of the rift-related basin formed at the eastern termination of the Pyrenean Rift.
  • Did the Western and the Eastern Vardar ophiolites originate through a single intra-oceanic subduction? Insight from numerical modelling
    Item type: Journal Article
    Stanković, Nikola; Gerya, Taras; Cvetkov, Vesna; et al. (2023)
    Gondwana Research
    The ophiolites of the Balkan Peninsula are distinguished into the Western and the Eastern Vardar ophiolites and it is generally accepted that both of them resulted from the latest Jurassic/earliest Cretaceous closure of the Vardar branch of the Tethys Ocean (Vardar Tethys). This study is aimed at testing the possibility that the origin and emplacement of these two ophiolite belts can be explained in terms of a single NE-dipping intra-oceanic subduction, which commences in mid Jurassic and lasts until the lowermost Cretaceous, and then transitions into collision between the African and the European plate. The subduction is accompanied by creation of a new oceanic lithosphere in the back-arc. In order to test this hypothesis, we use 2D numerical thermomechanical modeling for investigating the nucleation of the East Vardar Ocean in the back-arc and intra-arc region. Our numerical results suggest that a single intra-oceanic subduction can indeed be simultaneously responsible for both the westward obduction of the Western Vardar ophiolites and for complex active margin processes along the western rim of the European plate. The simulations show that the single intra-oceanic subduction zone is able to produce a pronounced extension and oceanic spreading along the European margin, which can be associated with the formation of the Eastern Vardar ophiolites in this subduction related setting (SSZ and BAB). The comparison of the numerical modeling results with available natural data suggests that our models are capable to approximate the regional geodynamic evolution during and immediately after the closure of Vardar Tethys.
  • Thermo-mechanical modeling of the obduction process based on the Oman Ophiolite case
    Item type: Journal Article
    Duretz, Thibault; Agard, Philippe; Yamato, Philippe; et al. (2016)
    Gondwana Research
  • From Mesozoic rifting to Apennine orogeny: The Gran Sasso range (Italy)
    Item type: Review Article
    Cardello, Giovanni L.; Doglioni, Carlo (2015)
    Gondwana Research
  • The geological history of northwestern South America
    Item type: Journal Article
    Spikings, Richard A.; Cochrane, Ryan; Villagómez, Diego; et al. (2015)
    Gondwana Research
  • Precambrian geodynamics
    Item type: Journal Article
    Gerya, Taras (2014)
    Gondwana Research
  • Orogenic architecture of the Mediterranean region and kinematic reconstruction of its tectonic evolution since the Triassic
    Item type: Review Article
    Van Hinsbergen, Douwe J.J.; Torsvik, Trond H.; Schmid, Stefan M.; et al. (2020)
    Gondwana Research
    The basins and orogens of the Mediterranean region ultimately result from the opening of oceans during the early break-up of Pangea since the Triassic, and their subsequent destruction by subduction accommodating convergence between the African and Eurasian Plates since the Jurassic. The region has been the cradle for the development of geodynamic concepts that link crustal evolution to continental break-up, oceanic and continental subduction, and mantle dynamics in general. The development of such concepts requires a first-order understanding of the kinematic evolution of the region for which a multitude of reconstructions have previously been proposed. In this paper, we use advances made in kinematic restoration software in the last decade with a systematic reconstruction protocol for developing a more quantitative restoration of the Mediterranean region for the last 240 million years. This restoration is constructed for the first time with the GPlates plate reconstruction software and uses a systematic reconstruction protocol that limits input data to marine magnetic anomaly reconstructions of ocean basins, structural geological constraints quantifying timing, direction, and magnitude of tectonic motion, and tests and iterations against paleomagnetic data. This approach leads to a reconstruction that is reproducible, and updatable with future constraints. We first review constraints on the opening history of the Atlantic (and Red Sea) oceans and the Bay of Biscay. We then provide a comprehensive overview of the architecture of the Mediterranean orogens, from the Pyrenees and Betic-Rif orogen in the west to the Caucasus in the east and identify structural geological constraints on tectonic motions. We subsequently analyze a newly constructed database of some 2300 published paleomagnetic sites from the Mediterranean region and test the reconstruction against these constraints. We provide the reconstruction in the form of 12 maps being snapshots from 240 to 0 Ma, outline the main features in each time-slice, and identify differences from previous reconstructions, which are discussed in the final section.
  • 2D thermomechanical modelling of continent-arc-continent collision
    Item type: Journal Article
    Dymkova, Diana; Gerya, Taras; Burg, Jean-Pierre (2016)
    Gondwana Research
Publications 1 - 10 of 44