The website uses cookies.

Read more
Tresticklan National Park

Geology

A dominant feature of the hilly terrain is the narrow mountain ridges, which consist of banded gneiss of the greywacke type.

Gneiss is present in a large vein that usually is called the Stora Le – Mars transformation. It probably formed more than 1,650 million years ago, making it one of the oldest types of rock in western Sweden. There also are a few thin dikes of diabase and pegmatite. A long time ago, pegmatite was mined in the area along with the magnetite found in some places. Traces of magnetite mining remain at Orshöjden and at Sminäset.

Share with your friends

Share this page with your friends on Facebook, Twitter, Google+ and e-mail.