Gneiss alpino con foliazione metamorfica e licheni aranciati
The gneiss surface is crossed by a dense succession of thin, undulating bands formed by the alignment of quartz, feldspar and mica during Alpine metamorphism. These structures flow continuously across the rock, creating a three-dimensional texture that reflects light with a remarkably metallic appearance.
Small colonies of orange lichens interrupt the rhythm of the surface, introducing subtle colour contrasts onto a structure shaped by millions of years of pressure, recrystallization and slow erosion.
The Greina plateau belongs to the crystalline domain of the Central Alps, where gneisses were formed during the Alpine orogeny.
The characteristic undulating bands represent metamorphic foliation developed deep within the Earth's crust under high pressures and temperatures. Later glacial erosion polished the surface, revealing this remarkable mineral architecture, now slowly colonized by pioneer organisms.
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