Vara Eclogites
The eclogites, rocks present mainly in the area of Vara, have a very dark coloring, but at close distance, we can recognize the dark red of garnet and the purple of the Rutile inside the matrix of dark green pyroxene.
These rocks are due to very high metamorphism pressure ( 8-10 kbar = about 30-50 km ) and low temperature ( 470° C). Previous set of basaltic rocks. The eclogites can be called even "metabasite" ( metamorphic basalt ) in eclogite facies ( high pressure ASSA temperature).
In Beigua Geopark, several sites of petrography interest present also mineralogical or geomorphological significant features, such as the conspicuous metarodingite dikes (Vara, Bc. Dell'Uomo morto) or the Mt. Tariné block stream. The orogenic built-up resulted in the exhumation and partial re-equilibration (e.g. antigorite olivine in the serpentineschists) of the high-pressure units (Bric dell'Uomo Morto). The subsequent orogenic collapse produced post-orogenic tectonic breccias and was related to the erosion of the structural higher and deepest-in-the subduction units.
