Evidence for early Proterozoic plate tectonics from seismic reflection profiles in the Baltic shield

T. Dahl-Jensen, R.W. Hobbs, S.L. Klemperer, D.H. Matthews, D.B. Snyder, R. Long, T. Matthews, D.J. Blundell, C.-E. Lund, H. Palm, L.B. Pedersen, R.G. Roberts, S.-Å. Elming, P. Heikkinen, H. Korhonen, U. Luosto, S.-E. Hjelt, K. Komminaho, J. Yliniemi, R. MeissnerP. Sadowiak, Th. Wever, T. Dickmann, E.R. Flueh, A. Berthelsen, H. Thybo, N. Balling, E. Nørmark

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

266 Citationer (Scopus)

Abstrakt

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.

OriginalsprogEngelsk
Sider (fra-til)34-38
Antal sider5
TidsskriftNature
Vol/bind348
Udgave nummer6296
DOI
StatusUdgivet - 1 nov. 1990
Udgivet eksterntJa

Programområde

  • Programområde 3: Energiressourcer

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