Svecofennian Orogen

geology

Written by

The Information Architects of Encyclopaedia Britannica

Last updated

July 14, 2026

Quick Summary

The Svecofennian Orogen is a geological formation in the Baltic Shield, extending through northern Sweden, southern Finland, and western Russia. It formed between 1.9 and 1.7 billion years ago. This orogenic belt is characterized by a suture zone containing ophiolite complexes, which are remnants of oceanic crust. Copper mineralization is found within these oceanic crust rocks. To the north of the suture lies a shelf-type sedimentary sequence, while a volcanic-plutonic arc is present to the south. Further south, a zone of thrusted gneisses intruded by tin-bearing granites, known as rapakivi granites, likely formed due to mantle plume activity. The Svecofennian Orogen is part of the Precambrian geology of Europe.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

3 Britannica Sources

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.

Europe
Precambrian
…belt in the north, the Svecofennian, developed in the Early Proterozoic Era (2.5 to 1.6 billion years ago); it now occupies the bulk of the Baltic Shield, especially in Finland and Sweden, where it extends from the Kola Peninsula to the Gulf of Finland near Helsinki. The younger Sveconorwegian is…
Read More
…belt in the north, the Svecofennian, developed in the Early Proterozoic Era (2.5 to 1.6 billion years ago); it now occupies the bulk of the Baltic Shield, especially in Finland and Sweden, where it extends from the Kola Peninsula to the Gulf of Finland near Helsinki. The younger Sveconorwegian is…
Read More

Precambrian
Orogenic belts
The Svecofennian Orogen of the Baltic Shield extends in a southeasterly direction from northern Sweden through southern Finland to the adjoining part of western Russia. It formed in the period from 1.9 to 1.7 billion years ago. A major lineament across southern Finland consists of the…
Read More
The Svecofennian Orogen of the Baltic Shield extends in a southeasterly direction from northern Sweden through southern Finland to the adjoining part of western Russia. It formed in the period from 1.9 to 1.7 billion years ago. A major lineament across southern Finland consists of the…
Read More