Abstract
ABSTRACT The area between the Asco and Golo valleys in Central Corsica, France (latitudes 42°47′95″N to 42°37′96″N, longitudes from 9°11′82″E to 9°20′72″E) is a key-sector to investigate the stratigraphic and tectonic setting of Alpine Corsica. This sector includes (from the structurally lowest to the highest) the Hercynian Corsica, that represents the European continental margin not deeply involved in the convergence processes, and a stack of oceanic and continental units belonging to the Alpine Corsica, i.e. the domain strongly affected by the Alpine deformation and metamorphism in the Late Cretaceous-Paleogene. The 1:15,000 scale geological map illustrates the tectonic features of Alpine Corsica stack with a special focus to the Lower Units, the units derived from the European thinned continental margin involved in the Alpine convergence.
Highlights
The northeastern part of the Corsica Island, France (France, Figure 1(a)) is characterized by a set of tectonic units consisting of deformed and metamorphic rocks known as Alpine Corsica (AC)
This domain is regarded as the southern continuation of the Western Alps and includes a stack of oceanic and continental units originated during the Late Cretaceous-Paleogene closure of the Ligure-Piemontese oceanic basin and the subsequent collision between European and Adria continental margins (e.g. Bortolotti et al, 2001; Marroni et al, 2017)
Lower Units (LU) consists of a stack of strongly deformed units metamorphosed under blueschist facies conditions derived from the thinned portion of the European continental margin affected by Paleogene convergent tectonics (Di Rosa et al, 2017a; Garfagnoli et al, 2009: Malasoma & Marroni, 2007; Malavieille et al, 1998; Molli, 2008; Molli et al, 2017)
Summary
The northeastern part of the Corsica Island, France (France, Figure 1(a)) is characterized by a set of tectonic units consisting of deformed and metamorphic rocks known as Alpine Corsica (AC). This domain is regarded as the southern continuation of the Western Alps and includes a stack of oceanic and continental units originated during the Late Cretaceous-Paleogene closure of the Ligure-Piemontese oceanic basin and the subsequent collision between European and Adria continental margins (e.g. Bortolotti et al, 2001; Marroni et al, 2017). This area is a key-sector to provide useful information for the reconstruction of the tectonic evolution of the AC, as the relationships of the AC stack with the HC are well exposed
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