The geology of Scania

Scania (Skåne) is the southern most part of the Swedish mainland. Its geology is complex and a result of many types of bedrock and separated events. The North-Eastern part of the Scanian peninsula is precambrian crystalline bedrock (granites ca 1.7 GA – 800 MA old) and the south western parts around the city of Malmö are young Mesozoic and Cenozoic sediments of the same age and type as found in Denmark (The Danish Basin). And in between the NE crystallins and this younger sediments there are sediments of for example Cambrian age (Alum shales and quartzites), Ordovician age (shales and mudstones), Permian, Triassic and Jurassic sediments (chalk, bioherms, sandstones, siltstones) are also present. And everywhere in the landscape Cenozoic (esp Quaternary) sediments are found. The only hiatus on sediments is with Devonian and Carboniferous sediments. This is of course very simplified. The landscape also feature stuff from other important events. In the North West you can find remains of the Sveconorwegian compressional stage. And the landscape also contains lots of Carboniferous dolerite (diabase) dykes and intrusions.

The most dominating geological event seen in the landscape today is probably the massive formation of the Tornqvist zone (more on it on Oles blog). The formation of it led to the formation of the horst and graben-formations seen across Scania. See image below:

Below, on the two figures you can see how Scania is located at the souther cost of Baltica during the Jurassic. And at this time the Tornqvistzone, and also a lot of volcanic activities started. (Figs from Bergelin thesis). More on these volcanoes in the next post on the geology of Scania.

This entry was posted in Landscapes & Geomorphology, Petrology, Scania (Skåne). Bookmark the permalink.

One Response to The geology of Scania

  1. Pingback: The volcanos of Scania | s a n d b i a n

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