Austroalpine Domain Research Articles

Geostructural evolution of the Southern Alps: Lineaments trends detected on Landsat images

The plutonic body of Mount Adamello in the central part of the Southern Calcareous Alps seems to have played a very important role in driving and controlling forces and regmatic events, since Upper Oligocene at the height of Alpine orogenesis. The intrusion is confined by the main tectonic alpine lineaments and is contiguous to the Austroalpine domain. This makes the area a rigid mechanical impediment to the advancing Adriatic microplate from whose movements different domains of lineaments originate, some of which have been recorded in recent studies on neotectonics. Stress fields that are still present has been suggested in this paper by using digitally enhanced Landsat image data to analyze lineaments.

Eastwards migration of the Tuscan anatectic magmatism due to anticlockwise rotation of the Apennines

AT the northern apex of the Tyrrhenian Sea, two mountain chains face each other displaying opposite vergence: the Corsican alpine chain and the Northern Apennines (Fig. 1). The Corsican alpine chain consists of both oceanic and continental nappes transported towards the West which are assumed to have derived from the peeling off of European, Tethyan and African (Austroalpine domains) lithosphere sectors. The age of metamorphism and orogenic transport towards the European foreland is mainly Cretaceous–Palaeogene. We present here an interpretation of the available data on post-collision continental anatectic magmatism in the Tuscan province (Italy) in the light of geodynamic evolution of the Tyrrhenian Sea.