In the heart of the Alps
|(CH 1903)||E 707780||N 124100||H 530.0|
|(WGS 84)||Long. 8.837||Lat. 46.260|
Hydromorphologie, Mineralogy / petrology
The rock units which appear in this area of Val Verzasca pertain to the Shroud of Simano (la Coltre del Simano). This area, like most of north-central Ticino, makes up part of the group of strata belonging to the Alpine domain which are found at greater depths during the Alpine orogenesis and therefore have undergone the most extreme deformation: the lower Penninic thrustfront. The continental collision between Africa and Europe upset the existing granite rocks, dragging them into the bowels of the earth. At a depth of 30 kilometres, with pressures of around 1.2 GPa (12,000 times greater than the atmospheric pressure at sea level) and with temperatures near 800° C, the rocks were metamorphosed (ultrametamorphism) and partially merged, causing the remixing of the minerals. The following slow cooling led to a selective solidification of various minerals in such a way as to form aggregates of elements with similar chemical characteristics which are visible today in the designs of the migmatite and gneiss bands of Lavertezzo.
From the Bellinzona Sud exit (number 47) of the A2 motorway, proceed in the direction of Locarno for about 10 kilometres to the roundabout near the cantonal airport of Locarno. From there follow the signs for Gordola and Valle Verzasca. From Gordola go up the valley for 10 kilometres to Lavertezzo. Please park in the areas especially provided for tourists.
Approaching the site does not require any special preparation, as it is located only a few metres from the car park.
COTTI et al. (1990): Introduzione al paesaggio naturale del Cantone Ticino.Vol. 1, Le componenti naturali, Bellinzona, 484 pp.
DECUYPER H. & ANTOGNINI M. (2008): Magie di pietra. Locarno. Armando Dadò.