Upper-mantle volatile chemistry at Oldoinyo Lengai volcano and the origin of carbonatites

@article{Fischer2009UppermantleVC,
  title={Upper-mantle volatile chemistry at Oldoinyo Lengai volcano and the origin of carbonatites},
  author={Tobias P Fischer and Pete Burnard and Bernard Marty and David Hilton and Evelyn F{\"u}ri and Fabien Palhol and Zachary D. Sharp and F. Mangasini},
  journal={Nature},
  year={2009},
  volume={459},
  pages={77-80}
}
Carbonatite lavas are highly unusual in that they contain almost no SiO2 and are >50 per cent carbonate minerals. Although carbonatite magmatism has occurred throughout Earth’s history, Oldoinyo Lengai, in Tanzania, is the only currently active volcano producing these exotic rocks. Here we show that volcanic gases captured during an eruptive episode at Oldoinyo Lengai are indistinguishable from those emitted along mid-ocean ridges, despite the fact that Oldoinyo Lengai carbonatites occur in a… CONTINUE READING

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