Weingut Rudi Pichler

Over the course of the Variscian ontogeny, 350 million years ago, the stone was transformed into so-called migmatitic granite gneiss. The migmatitic amphibolite in the lower vineyard parcels is a metamorphic rock as well, one which underwent a par tial melting. The name refers to the high concentration of the alkaline mineral hornblende, the most frequently encountered representative of the amphibolite group.

The typical Gföhler gneiss is a migmatitic or thogneiss, a metamorphic rock that is formed when granite is subjected to extreme conditions of pressure and temperature. The granite itself was formed thanks to a gradual cooling of acidic molten stone some 480 million years in the past.