La chaine calcaire des monts peloritains (Sicile)

Caire, André; Duee, Gerard; Truillet, Rene

doi:10.2113/gssgfbull.s7-vii.6.881

Cited by 10 publications

(7 citation statements)

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“…In the eastern Peloritani Mountains, distinct Mesozoic sequences, classically referred to the ‘Longi-Taormina Nappe’ (Ogniben, 1960; ‘chaine calcaire’ of Caire, Duee & Truillet, 1965), widely crop out. They form highly sheared structural horizons, marking the thrust surfaces that separate the superimposed basement nappes (Fig.…”

Section: Mesozoic Sequences Of the Peloritani Mountainsmentioning

confidence: 99%

“…2). In the Taormina area, the shear zone involves very large slices of Mesozoic successions that have previously been described as Taormina Unit (Caire, Duee & Truillet, 1965; Lentini & Vezzani, 1975) and Capo S. Andrea Unit (Lentini & Vezzani, 1975). The slices of the Mesozoic successions detected near Taormina (Fig.…”

Section: Mesozoic Sequences Of the Peloritani Mountainsmentioning

confidence: 99%

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The effects of a Meso-Alpine collision event on the tectono-metamorphic evolution of the Peloritani mountain belt (eastern Sicily, southern Italy)

et al. 2017

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The Peloritani Mountains, in the southern part of the Calabrian Terranes, southern Italy, have been classically interpreted as the product of the Paleogene brittle deformation of the European continental back-stop of the Neotethyan subduction complex. This reconstruction conflicts with the occurrence of an Alpine metamorphic overprint that affected portions of both the Variscan metamorphic units and part of the Mesozoic sedimentary covers of the mountain belt. New field data, integrated with petrographic, micro- and meso-structural analyses and stratigraphic investigation of the syn-tectonic terrigenous covers, well constrain a Paleogene collision event along the Africa–Nubia convergent margin that caused the exhumation of the Alpine metamorphic units of the Peloritani Mountains. The syn-collisional exhumation was associated with shearing along two major Africa-verging crustal thrusts arising from the positive tectonic inversion of the former European palaeomargin. Early tectonic motions occurred within the mountain belts and produced the exhumation of the external portions of the edifice. Later tectonic motions occurred along the sole-thrust of the entire edifice and caused the definitive exhumation of the entire mountain belt. The whole crustal thrusting lasted for a period of c. 10 Ma, during the entire Oligocene. The definitive southwestward emplacement of the Peloritani Mountain Belt onto the Neotethyan accretionary wedge was followed by two Late Oligocene – Early Miocene NW–SE-oriented right lateral shear zones, replacing the previous crustal thrust. These two strike-slip belts are interpreted as the surface expression of the deep-seated suture zone between the colliding Africa and Europe continental crusts.

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Section: Mesozoic Sequences Of the Peloritani Mountainsmentioning

confidence: 99%

Section: Mesozoic Sequences Of the Peloritani Mountainsmentioning

confidence: 99%

The effects of a Meso-Alpine collision event on the tectono-metamorphic evolution of the Peloritani mountain belt (eastern Sicily, southern Italy)

et al. 2017

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“…In the present paper, meso-and microstructural analyses on the Cambrian to Aquitanian terrains of the Longi-Taormina Unit (which corresponds to the "Dorsale" or "Chaîne calcaire" [39,40] or to the " Chaîne bordière" [41]) have been carried out to obtain information on their Alpine and Pre-Alpine tectonic evolution, and to compare it with the geological history recognised in the " Dorsale calcaire" of other portions of the central-western Mediterranean Alpine Belt. We studied all the central and eastern outcrops of the Longi-Taormina Unit, including a detailed analysis of the tectonic contact with the overlying Fondachelli Unit.…”

Section: Longi-taormina Unitmentioning

confidence: 99%

“…It is composed of a thick Meso-Cenozoic sedimentary cover, lying on a Variscan weakly metamorphic Palaeozoic succession. In the sedimentary cover, several successions characterised by different facies evolution have been recognised [29,[40][41][42][43][44].…”

Section: The Longi-taormina Unit (Ltu)mentioning

confidence: 99%

“…The main difference between the Maghrebian and Betic Pseudo-Verrucano-type deposits and those of the LTU cover deal with the age of the end of the continental deposition, being Late Triassic in the Maghrebian and Betic chains and up to the Hettangian in the LTU. Upper Triassic platform rocks, probably ascribable to the Carnian-Norian time span [38], are however present in the Alpine anchimetamorphic terrains of the Alì Unit [114], which was considered as part of the "Dorsale calcaire" of the Peloritani Belt by Caire et al [41].…”

Section: Alpine Tectono-sedimentary Evolutionmentioning

confidence: 99%

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The Cambrian to Aquitanian geological record of the Longi-Taormina Unit (Calabria-Peloritani Arc, southern Italy): geodynamic implications

2005

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The Longi-Taormina Unit forms the "Dorsale calcaire" of the Peloritani Alpine Belt (southern Calabria-Peloritani Arc). It is made by a thick sedimentary cover of Meso-Cenozoic age overlying a Variscan weakly metamorphosed Cambrian to Carboniferous succession. The Palaeozoic series consists of pelitic to arenaceous sediments containing layers of acidic and basic volcanics. The acidic volcanics are affected by the "Caledonian" compressional deformations and are referred to Early Ordovician. The basic rocks belong to two different volcanic cycles; the first, not dated, is ascribed to the Caledonian cycle according to its geochemical signature; whereas the second, middle-late Devonian in age, is interpreted to have formed in the framework of pre-Variscan extensional tectonics. During the Variscan Orogeny (330 Ma), the area recorded metamorphism up to subgreenschist-to-greenschist facies and two main deformation phases, marked by syn-schistose early folds (D v1), overprinted by dominantly NW-SE trending late folds (D v2). During the Aquitanian, deformation related to the Alpine Orogeny led to imbrication of the Palaeozoic and Meso-Cenozoic series. The sedimentary cover was affected by a series of N090˚ to N130˚ trending folds. Detailed stratigraphical and structural investigations on the tectonic contact between the Longi-Taormina Unit, and the overlying Fondachelli Unit indicate that this structure is part of a frontal thrust ramp which developed during the Aquitanian. Our geological and structural studies on the Cambrian to Aquitanian rocks of the Longi-Taormina Unit of the Calabria-Peloritani Arc enable to unravel the complex geodynamic history of the central-western Mediterranean area.

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