A. Streckeisen et al., THE METABASITES OF COL-SAFLISCH, MONTE-LE ONE COVER (LOWER PENNINIC NAPPES, VALAIS) - ISLAND-ARC ANDESITIC BASALTS, Schweizerische Mineralogische und Petrographische Mitteilungen, 78(1), 1998, pp. 147-155
A basic bloc, a few tens of meters in length, from the Monte Leone cov
er (lower Penninic Alps) contains prasinites-ovardites and breccias of
ten rich in varioles or bubbles. The stratigraphic age of the block is
considered to be Triassic. The chemical composition is that of are th
oleiite.