Sonntag, 5. April 2009

The mud with the hat

Old legends tell that once a group of pridefully dwarfs were petrified for punishment, and still they can found hidden deep in the forest:

But like many other storys the geological explanation can be also fascinating.

The earth pyramids developed after strong rainfall caused a landslide in 1882, exposing the glacial till to erosion. Larger blocks of gneiss and schist protect the underlying sandy to clayey sediment from outwash by precipitation, forming fragile pillars and stubby columns. When the covering stone (remembers me a pukao) get´s lost, the earth pyramids develop to pinnacles, that over time will shrunk after funally they dissapear. But the regressive erosion will shape new „dwarfs“ from the till, to replace the lost one.

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