Sebakwe craton
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The Sebakwe proto-craton is a hypothesized earlier formation of the Zimbabwe craton. "A single Early Archaean continental crustal segment existed in Zimbabwe, extending for over 450 km from the south-central Tokwe region, through the Midlands and up to the northern Shamva region of the present day craton. This c.3.4 Ga crustal block, which we propose to be called the Sebakwe Proto-craton, stabilised around 3.35 Ga with a later granitoid emplacement event around 3.2 Ga and provided the basement for the 3.0-2.6 Ga Late Archaean granite-greenstone magmatism." (Nesbitt et al., 1999)
[edit] References
- Nesbitt, Robert W., Stephen N. Noble, and James F. Wilson. (1999) "The Sebakwe Proto-Craton: An Extensive Early Archaean Crustal Block in Zimbabwe - A Reassessment of Craton Formation, Stabilisation and Growth." Journal of Conference Abstracts, Vol. 4 No. 1, Symposium A08, Early Evolution of the Continental Crust. Online: [1]
