Observations sur le developpement tectonique des Sporades du Nord

Jacobshagen, Volker; Skala, Wolfdietrich; Wallbrecher, E.

doi:10.2113/gssgfbull.s7-xviii.2.281

Cited by 6 publications

(3 citation statements)

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“…2a ), redrawn after Aubouin et al [ 12 ]. This figure essentially indicates that an ophiolite sheet was obducted over eastern Pelagonia during the latest Jurassic to earliest Cretaceous, ‘Eohellenic Phase’ [ 1 , 2 ], and subsequently overthrust by nappes originating from the Paikon subzone. For greater detail of the actual complexity of the Vardar zone of northern Greece and the Dinarides the reader is referred to Mercier [ 13 , 14 ], Mercier and Vergely [ 15 ], Sharp and Robertson [ 16 ], Michail et al [ 17 ], and Schmid et al [ 5 ].…”

Section: Geological Background and Previous Researchmentioning

confidence: 99%

“…The extensive, over 1-km thick, shallow marine carbonate platform of the Pelagonian zone evolved during the Late Triassic through the Late Jurassic. In the latest Jurassic to earliest Cretaceous, it was buried under an obducted ophiolite sheet, known as an Eohellenic or Western Vardar ophiolite sheet, that derived from the Meliata-Maliac-Vardar (or Neotethyan) oceanic realm [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Tectono-stratigraphic correlations between Northern Evvoia, Skopelos and Alonnisos, and the postulated collision of the Pelagonian carbonate platform with the Paikon forearc basin (Pelagonian–Vardar zones, Internal Hellenides, Greece)

Scherreiks

BouDagher‐Fadel

2020

UCL Open Environ

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The Pelagonian stratigraphy of the Internal Hellenides consists of a Permo-Triassic basement and an Upper Triassic and Jurassic carbonate platform formation that has been overthrust by the Eohellenic ophiolite sheet during the Early Cretaceous. Intensive erosion, during the Cretaceous, removed most of the ophiolite and parts of the Jurassic formation. It is hypothesised that uplift and erosion of eastern Pelagonia was triggered by the break-off of the subducted oceanic leading edge of the Pelagonian plate. An investigation of the rocks that succeed the erosional unconformity shows that they constitute a shear-zone that is tectonically overlain by Cretaceous platform carbonates. Geochemical analyses of the shear-zone rocks substantiate that they are of mid-oceanic ridge and island arc provenience. Eastern Pelagonia collided with a Cretaceous carbonate platform, probably the Paikon forearc basin, as the Almopias ocean crust subducted beneath that island–arc complex. The Cretaceous platform, together with a substrate of sheared-off ocean floor mélange, overthrust eastern Pelagonia as subduction continued, and the substrate was dynamically metamorphosed into cataclastic rocks, mylonite, phyllonite and interpreted pseudotachylite. This complex of Cretaceous platform rocks and a brittle-ductile shear-zone-substrate constitute the here named Paikon–Palouki nappe, which was emplaced during Early Palaeocene. The Paikon–Palouki nappe did not reach Evvoia. Seismic tomographic models of the Aegean region apparently depict images of two broken-off ocean-plate-slabs, interpreted as Almopias-lithosphere-slabs. It is concluded that the western Almopias slab began to sink during the Early Cretaceous, while the eastern Almopias slab broke off and sank after the Paikon–Palouki nappe was emplaced in the Early Palaeocene.

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Section: Geological Background and Previous Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tectono-stratigraphic correlations between Northern Evvoia, Skopelos and Alonnisos, and the postulated collision of the Pelagonian carbonate platform with the Paikon forearc basin (Pelagonian–Vardar zones, Internal Hellenides, Greece)

Scherreiks

BouDagher‐Fadel

2020

UCL Open Environ

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“…JACOBSHAGEN carried out important investigations not only of the island, but also in the surrounding regions (see JACOBSHAGEN 1979JACOBSHAGEN , 1983JACOBSHAGEN , 1986, JACOBSHAGEN et al (1975JACOBSHAGEN et al ( , 1976aJACOBSHAGEN et al ( , 1976bJACOBSHAGEN et al ( , 1977aJACOBSHAGEN et al ( , 1977bJACOBSHAGEN et al ( , 1978JACOBSHAGEN et al ( , 1984. With respect to the geological structure of Skopelos, he mentioned that the island consists of the following geological formations (from bottom to top): 1) Werfenian beds.…”

Section: Bibliographic Review On Skopelosmentioning

confidence: 99%