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The Precambrian drift history and paleogeography of Baltica
Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; Geological Survey of Finland, Geophysical Solutions, Espoo, Finland.
Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland.
Geological Survey of Finland, Geophysical Solutions, Espoo, Finland.
Department of Physics, University of Helsinki, Helsinki, Finland.
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2021 (English)In: Ancient Supercontinents and the Paleogeography of Earth / [ed] Lauri J. Pesonen; Johanna Salminen; Sten-Åke Elming; David A.D. Evans; Toni Veikkolainen, Elsevier, 2021, p. 155-205Chapter in book (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 2021. p. 155-205
Keywords [en]
Baltica, paleomagnetic record, paleoclimatic indicators, drift rate, Superia, Nuna, Rodinia
National Category
Geology
Research subject
Exploration Geophysics
Identifiers
URN: urn:nbn:se:ltu:diva-87504DOI: 10.1016/B978-0-12-818533-9.00015-1Scopus ID: 2-s2.0-85139349922OAI: oai:DiVA.org:ltu-87504DiVA, id: diva2:1603071
Note

ISBN för värdpublikation: 9780128185339; 9780128185346

Available from: 2021-10-14 Created: 2021-10-14 Last updated: 2023-10-11Bibliographically approved

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