Paleoproterozoic evolution of Fennoscandia and Greenland

Raimo Lahtinen, Adam A. Garde, Victor A. Melezhik

Research output: Contribution to journalArticleResearchpeer-review

141 Citations (Scopus)

Abstract

The Paleoproterozoic evolution of Fennoscandia and Greenland can be divided into major rifting and orogenic stages. The Paleoproterozoic rifting of Fennoscandia started with 2.505-2.1 Ga, multiphase, southwest-prograding, intraplate rifting. Both Fennoscandia and Greenland experienced 2.1-2.04 Ga drifting and separation of their Archean cratons by newly-formed oceans. The main Paleoproterozoic orogenic evolution of Fennoscandia resulted in the Lapland-Kola orogen (1.94-1.86 Ga) and the composite Svecofennian orogen (1.92-1.79 Ga). The Paleoproterozoic orogens in Greenland, from north to south, are the Inglefield mobile belt (1.95-1.92 Ga), the Rinkian fold belt/ Nagssugtoqidian orogen (1.88-1.83 Ga) and the Ketilidian orogen (c. 1.8 Ga). The Lapland-Kola orogen, Inglefield mobile belt and the Rinkian fold belt/Nagssugtoqidian orogen are continent-continent collision zones with limited formation of new Paleoproterozoic crust, whereas the Ketilidian orogen displays a convergent plate-tectonic system, without subsequent collision. The composite Svecofennian orogen is responsible for the main Paleoproterozoic crustal growth of Fennoscandia.

Original languageEnglish
Pages (from-to)20-28
Number of pages9
JournalEpisodes
Volume31
Issue number1
DOIs
Publication statusPublished - 1 Mar 2008

Programme Area

  • Programme Area 4: Mineral Resources

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