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

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

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.348...34.&link_type=abstract

Nature, Volume 348, Issue 6296, pp. 34-38 (1990).

Computer Science

31

Scientific paper

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.

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