Source: Pascal Brackman
Alpbachtal er, hvad geologer kalder en åbnet antiklinale. Det er lag, der er foldet i form af et A (se figur). Kernen (eller det nederste lag) af denne antiklinale består af skifer. Men størstedelen af toppen af dette 'A' i Alpbach-dalen er eroderet (=åbnet). Det har at gøre med, at denne skifer forvitres meget hurtigere end for eksempel den lidt yngre kalkstenslag. Skiferen er også vandholdende, og vandet trænger derfor ikke meget ind, men strømmer mest væk. Dermed forvitrer den også hurtigere end kalkstenen, som du især finder på de nordligt beliggende toppe (Gratlspitze og Hochstrickl).
Skiferen stammer fra Ordovicium. Kalkstenen fra Devon.
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Source: Pascal Brackman
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Discover the most beautiful and popular attractions in the area, carefully bundled in appropriate selections.
Source: Pascal Brackman
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