Abstract
The Great Lakes tectonic zone (GLTZ) is a Late Archean crustal boundary (paleosuture) at least 1,000 km long that juxtaposes a Late Archean greenstone-granite terraine (Wawa subprovince of Superior province) on the north and an Early-Late Archean gneiss terrane (Minnesota River Valley subpprovince) on the south. Recent geologic mapping in the Marquette, Michigan area (eastern part of figure 1) provides for the first time direct observation of the structure of the GLTZ along a strike length of 10 km. We suggest that the kinematics determined in the exposed GLTZ, which are consistent, are applicable to its entire length.
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© 1995 Springer Science+Business Media Dordrecht
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Sims, P.K., Day, W.C. (1995). New Data on Vergence of the Late Archean Great Lakes Tectonic Zone. In: Ojakangas, R.W., Dickas, A.B., Green, J.C. (eds) Basement Tectonics 10. Proceedings of the International Conferences on Basement Tectonics, vol 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0831-9_37
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DOI: https://doi.org/10.1007/978-94-017-0831-9_37
Publisher Name: Springer, Dordrecht
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