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The summit of Chasseral (Stage 6)

The Cenozoic Era, over the past 65 million years, was when the main deformational thrust took place in the Jura. The oceanic floor was pushed upwards as tectonic plates collided, forming mountains. Several major thrusts and Alpine uplifts occurred to form the first Jura mountain around 35 million years ago.

As a result of Cenozoic orogeny and more recent erosion, fault lines, folds, anticlines, high plateaus, deep gorges and combes form the main topography of modern-day Jura. Due to the layers of limestone and marl, permeable rock surfaces have enabled underground water networks to develop, alongside natural features formed by erosion, such as craggy karsts and fissures.

Geologic places of interest along the Jura Crest Trail

 Mammoth Museum, Niederweningen (Stage 1) – a museum dedicated to the discoveries of mammoth fossils in Switzerland and in particular the local area. This small but very informative museum slightly north of the trail, but easily accessible by public transport from Dielsdorf, Baden or Brugg, is worth the detour: www.mammutmuseum.ch.