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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. A. Elming
  • , P. Heikkinen
  • , H. Korhonen
  • , U. Luosto
  • , S. E. Hjelt
  • , K. Komminaho
  • , J. Yliniemi
  • , R. Meissner
  • P. Sadowiak, Th Wever, T. Dickmann, E. R. Flueh, A. Berthelsen, H. Thybo, N. Balling, E. Nørmark
*Corresponding author for this work
  • University of Cambridge
  • Geological Survey of Denmark and Greenland
  • Stanford University
  • Durham University
  • RHB New College
  • Uppsala University
  • Luleå University of Technology
  • University of Helsinki
  • University of Oulu
  • Kiel University
  • Helmholtz Centre for Ocean Research Kiel
  • University of Copenhagen
  • Aarhus University

Research output: Contribution to journalArticlepeer-review

294 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)34-38
Number of pages5
JournalNature
Volume348
Issue number6296
DOIs
Publication statusPublished - 1990
Externally publishedYes

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