Volcanos of Auvergne
Most of the area of Auvergne is covered by the Massif Central, solid mass hercynien dating from the end of the primary era which is stretched on almost a sixth of the entire surface of the France. It is a high plate (Pénéplaine) intersected with deep valleys. A volcanic episode intervened with the tertiary and the Quaternaire. The most recent volcanos have less than 8000 years and form a unit called Chaîne of Puys. The culminating point of Auvergne, 1886 m, is at the Puy de Sancy in the solid mass of the Monts Gilds dating from the tertiary sector. The Monts of the Cantal are also the remainders of an immense volcano 80 km in diameter. In the east the Mounts of the Forez are also volcanic origin.
See too
External bonds
BRGM
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