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Kjeragbolten

Boulder in Norway

  • 2 min read
  • 3 chapters

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Through Till, Plate tectonics and Glacial period

Geology

Rogaland lies in a weak tectonic zone, allowing the river to dig into the surrounding sandstone mountain. During the several glaciations known to have occurred in Scandinavia, Norway was completely covered in glaciers. Between the glaciations, the meltwater formed and reformed the valley up to 22 times. After the last glacial period, global warming caused a rise in sea level, flooding the fjords. The boulder was deposited during this last glaciation at around 50,000 B.C. As the Norwegian Glacier melted, it was accompanied by a rebound in rock formations as the ice was removed. In Kjeragbolten's case, the rebound was faster than the rising sea level, which wedged the rock into its current position.

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