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Archean Greenstone Belts and Granitic Gneisses of North America

  • Gunter Faure
Chapter

Abstract

The Precambrian shields of all continents contain belts of folded metavolcanic and metasedimentary rocks surrounded by granitic gneisses. These so-called greenstone belts are the remnants of large volcano-sedimentary complexes of Archean and Proterozoic age. The volcanic rocks range in composition from komatiites and low-K tholeiites to dacites and rhyolites and consist of lava flows, sills, and stratified tuffs. The sedimentary rocks are typically composed of greywacke, quartzite, argillites, and cherty iron formations with uncommon carbonate units (de Wit and Ashwal 1997; Goodwin 1996).

Keywords

Granitic Rock Granitic Gneiss Greenstone Belt Metavolcanic Rock Zircon Date 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Gunter Faure
    • 1
  1. 1.Faculty of Geological Sciences, 329 Mendenhall LabOhio State UniversityColumbusUSA

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