Pb and Nd isotope constraints on the origin of high Mg and tholeiitic amphibolites, Kolar Schist Belt, South India

@article{Balakrishnan1991PbAN,
  title={Pb and Nd isotope constraints on the origin of high Mg and tholeiitic amphibolites, Kolar Schist Belt, South India},
  author={Srinivasan Balakrishnan and Gilbert N. Hanson and V. Rajamani},
  journal={Contributions to Mineralogy and Petrology},
  year={1991},
  volume={107},
  pages={279-292}
}
The late Archean, north-south trending Kolar Schist Belt in south India, 4 km wide by 80 km long, is thought to be a suture between two gneiss terranes (Krogstad et al. 1989). Within this volcanics-dominated belt are recognized both tholeiitic and high Mg (komatiitic and picritic) amphibolites, which make up some 70% and 5% respectively of the exposed outcrops. A massive tholeiitic amphibolite separates the belt into western and eastern parts. A Pb-Pb whole-rock age of 2732±155 Ma on samples… 
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References

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The Kolar Schist Belt of the Dharwar Craton of South India is an Archean greenstone belt dominated by metavolcanic rocks. The mafic metavolcanic rocks occur as komatiitic and tholeiitic
Fe-Rich Archean Tholeiites Derived from Melt-Enriched Mantle Sources: Evidence from the Kolar Schist Belt, South India
Tholeiitic amphibolites in the circa 2700 Ma Kolar Schist Belt, south India, are intimately interlayered with minor komatiitic amphibolites. The tholeiitic amphibolites, which are similar to other
U-Pb ages and Sr, Pb and Nd isotope data for gneisses near the Kolar Schist Belt: Evidence for the juxtaposition of discrete Archean terranes
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The Peninsular Gneiss surrounding the N-S trending Kolar Schist Belt in the Dharwar Craton includes several components of granitic rocks that range in composition from tonalite to granite. On the
Petrogenesis of Amphibolites in the Kolar Schist Belt, India-A Preliminary Report
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