The Precambrian drift history and paleogeography of Baltica

Salminen, JohannaDepartment of Geosciences and Geography, University of Helsinki, Helsinki, Finland; Geological Survey of Finland, Geophysical Solutions, Espoo, Finland (författare)

ISBN för värdpublikation: 9780128185339; 9780128185346
We review paleomagnetic data and paleoclimatological indicators of Baltica and its subcratons. Between Neoarchean and middle Mesoproterozoic Karelia and Kola, and later the united Baltica were located mostly at the latitudes between 35°N and 35°S. Location of Baltica oscillated between high latitudes and the equator at late Mesoproterozic–Neoproterozoic. Drift velocities of the separate cratons between Neoarchean and middle Proterozoic are lower than the velocities of the united Baltica at late Paleoproterozoic–middle Mesoproterozoic. At Late Mesoproterozoic–Neoproterozoic Baltica shows high velocity peaks, which correlate temporarily with the ones obtained for Laurentia and can be ascribed to true polar wander. Increase in drift rates correlate temporarily with orogenies related to the formation of the supercontinents Nuna and Rodinia and in smaller scale to the crustal growth of Baltica. Based on the results, we review possible nearest neighbors for the Kola and Karelia in the Superia supercraton and for Baltica in the Nuna and Rodinia supercontinents.

Lehtonen, ElinaDepartment of Geosciences and Geography, University of Helsinki, Helsinki, Finland (författare)
Mertanen, SatuGeological Survey of Finland, Geophysical Solutions, Espoo, Finland (författare)
Pesonen, Lauri J.Department of Physics, University of Helsinki, Helsinki, Finland (författare)
Elming, Sten-ÅkeLuleå tekniska universitet,Geovetenskap och miljöteknik(Swepub:ltu)sael (författare)
Luoto, ToniDepartment of Geosciences and Geography, University of Helsinki, Helsinki, Finland (författare)
Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; Geological Survey of Finland, Geophysical Solutions, Espoo, FinlandDepartment of Geosciences and Geography, University of Helsinki, Helsinki, Finland (creator_code:org_t)

Ingår i:Ancient Supercontinents and the Paleogeography of Earth: Elsevier, s. 155-205

Av författaren/redakt...: Salminen, Johann ...; Lehtonen, Elina; Mertanen, Satu; Pesonen, Lauri J ...; Elming, Sten-Åke; Luoto, Toni

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