caa a22 4500 445839627 CHVBK 20180317145340.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00015-011-0058-0 doi (NATIONALLICENCE)springer-10.1007/s00015-011-0058-0 Middle-Late Jurassic syndepositional tectonics recorded in the Ligurian Briançonnais succession (Marguareis-Mongioie area, Ligurian Alps, NW Italy) [Elektronische Daten] [Carlo Bertok, Luca Martire, Elena Perotti, Anna d'Atri, Fabrizio Piana] The Middle-Upper Jurassic succession of the Marguareis-Mongioie area (Ligurian Briançonnais Domain), developed in a protected shelf environment evolving into a pelagic plateau, bears clear evidence of synsedimentary tectonics such as: growth fault-related structures; neptunian dykes; marked lateral variations in stratigraphic thicknesses testifying to the juxtaposition of sectors characterized by different sedimentation and subsidence rates; discordant, anomalous stratigraphic contacts corresponding to paleoescarpments; nodular beds showing evidence of fluidification interpreted as seismites; and the occurrence of sand-sized quartz grains pointing to denudation of Permo-Triassic quartz-rich rocks. Such evidence documents an important Middle-Late Jurassic post-breakup tectonic activity, which was more effective in controlling the basin topography than the Early Jurassic syn-rift tectonic phase. Two main tectono-sedimentary stages, one occurring during the Bathonian, the other falling within the Callovian-Kimmeridgian interval, were reconstructed. The first stage can be referred to a fault-related activity occurring shortly after the initial stages of oceanic spreading of the Ligurian Tethys; the second can be genetically related to the far effects of the first rifting stage of the Bay of Biscay and the Valais basin. Swiss Geological Society, 2011 Jurassic limestones nationallicence Post-breakup tectonics nationallicence Briançonnais domain nationallicence Ligurian Alps nationallicence Bertok Carlo Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut Martire Luca Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut Perotti Elena Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut d'Atri Anna Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut Piana Fabrizio Institute of Geosciences and Earth Resources, Turin Unit, National Council of Researches, via Valperga Caluso 35, 10125, Turin, Italy aut Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104/2(2011-10-01), 237-255 1661-8726 104:2<237 2011 104 15 https://doi.org/10.1007/s00015-011-0058-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00015-011-0058-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bertok Carlo Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut NATIONALLICENCE 700 1- Martire Luca Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut NATIONALLICENCE 700 1- Perotti Elena Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut NATIONALLICENCE 700 1- d'Atri Anna Department of Earth Sciences, University of Turin, via Valperga Caluso 35, 10125, Turin, Italy aut NATIONALLICENCE 700 1- Piana Fabrizio Institute of Geosciences and Earth Resources, Turin Unit, National Council of Researches, via Valperga Caluso 35, 10125, Turin, Italy aut NATIONALLICENCE 773 0- Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104/2(2011-10-01), 237-255 1661-8726 104:2<237 2011 104 15 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer