Fennoscandia
Synonyms
Definition
Fennoscandia is the geographic term that covers the Scandinavian countries, Finland, and the northwesternmost part of Russia. The geologic term Fennoscandian Shield denotes the Precambrian units of this area. The Precambrian of Fennoscandia consists of Archean and Proterozoic rocks, this description dealing with the former.
Overview
Archean rocks comprise much of the eastern and northern parts of the Fennoscandian shield. They have been divided into three major provinces: the Karelian Province in the west, the Belomorian Province in the east, and the Kola province in the north. Neoarchean and Mesoarchean (3.2–2.7 Ga) lithologies prevail, but a high proportion fall in a relatively restricted range of ca. 2.84–2.67 Ga. Older gneisses of Paleoarchean age (ca. 3.5 Ga) have been documented in a small area in the western part of the Karelian Province, and Mesoarchean 3.2–2.9 Ga rocks occur in restricted areas in the western and eastern parts of the...
Keywords
Archean Fennoscandia Greenstone belt TTGReferences and Further Reading
- Halla J, van Hunen J, Heilimo E, Hölttä P (2009) Geochemical and numerical constraints on Neoarchean plate tectonics. Precambrian Res 174:155–162CrossRefGoogle Scholar
- Shchipansky AA, Samsonov AV, Bibikova EV, Babarina II, Konilov AN, Krylov KA, Slabunov AI, Bogina MM (2004) 2.8 Ga boninite-hosting partial suprasubduction ophiolite sequences from the North Karelian greenstone belt, NE Baltic Shield, Russia. In: Kusky T (ed) Precambrian ophiolites and related rocks. Elsevier, Amsterdam, pp 425–487CrossRefGoogle Scholar
- Slabunov AI, Lobach-Zhuchenko SB, Bibikova EV, Sorjonen-Ward P, Balagansky VV, Volodichev OI, Shchipansky AA, Svetov SA, Chekulaev VP, Arestova NA, Stepanov VS (2006) The archaean nucleus of the Baltic/Fennoscandian shield. In: Gee DG, Stephenson RA (eds) European lithosphere dynamics. Geol Soc London, Memoir 32. pp 627–644Google Scholar
- Volodichev OI, Slabunov AI, Bibikova EV, Konilov AN, Kuzenko T (2004) Archaean eclogites in the Belomorian mobile belt, Baltic shield. Petrology 2:540–560Google Scholar
- Zozulya DR, Bayanova TB, Eby GN (2005) Geology and age of the late Archean Keivy alkaline province, Northeastern Baltic Shield. J Geol 113:601–608ADSCrossRefGoogle Scholar