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Evidence for early Proterozoic plate tectonics from seismic reflection profiles in the Baltic Shield
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
1990 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 348, p. 34-38Article in journal (Refereed) Published
Abstract [en]

Plate tectonics provides the linking framework for all tectonic and magmatic activity seen today, but it is not known when plate tectonics first developed on Earth. New deep seismic reflection and coincident refraction profiles across an exposed, 1.89-Gyr-old volcanic arc complex show a 10-km-thick offset in the Moho and bivergent reflectors in the crust, which were most probably created by plate convergence, subduction and accretion during the Early Proterozoic. Hence, plate tectonic models seem to be applicable for at least the second half of Earth's history.

Place, publisher, year, edition, pages
1990. Vol. 348, p. 34-38
National Category
Geophysics
Research subject
Applied Geophysics
Identifiers
URN: urn:nbn:se:ltu:diva-4179DOI: 10.1038/348034a0Local ID: 21576280-a431-11dc-8fee-000ea68e967bOAI: oai:DiVA.org:ltu-4179DiVA, id: diva2:977043
Note
Godkänd; 1990; 20071206 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Elming, Sten-åke

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