Volcanological and petrological evolution of Nyiragongo volcano, Virunga volcanic field, Zaire

@article{Demant1994VolcanologicalAP,
  title={Volcanological and petrological evolution of Nyiragongo volcano, Virunga volcanic field, Zaire},
  author={Alain Demant and Peter J. Lestrade and R. T. Lubala and Ali B Kampunzu and Jacques Durieux},
  journal={Bulletin of Volcanology},
  year={1994},
  volume={56},
  pages={47-61}
}
Three major phases are distinguished during the growth of Nyiragongo, an active volcano at the western limit of the Virunga Range, Zaire. Lavas erupted during phase 1 are strongly undersaturated melilities characterized by the presence of kalsilite phenocrysts, perovskite, and the abundance of calcite in the matrix. Such lavas crop out mainly on the inner crater wall and progressively evolve toward more aphyric melilite nephelinites well represented on the flanks of the volcano. Adventive vents… Expand
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