Liquid immiscibility between trachyte and carbonate in ash flow tuffs from Kenya

  title={Liquid immiscibility between trachyte and carbonate in ash flow tuffs from Kenya},
  author={R. Macdonald and B. Kjarsgaard and I. Skilling and G. R. Davies and D. L. Hamilton and S. Black},
  journal={Contributions to Mineralogy and Petrology},
  • R. Macdonald, B. Kjarsgaard, +3 authors S. Black
  • Published 1993
  • Geology
  • Contributions to Mineralogy and Petrology
  • Three thin, syn-caldera ash flow tuffs of the Suswa volcano, Kenya, contain pumiceous clasts and globules of trachytic glass, and clasts rich in carbonate globules, in a carbonate ash matrix. Petrographic and textural evidence indicates that the carbonate was magmatic. The trachyte is metaluminous to mildly peralkaline and varies from nepheline- to quartz-normative. The carbonate is calcium-rich, with high REE and F contents. The silicate and carbonate fractions have similar 143Nd/144Nd values… CONTINUE READING
    81 Citations
    High-temperature carbonate minerals in the Stillwater Complex, Montana, USA
    • 14


    The role of liquid immiscibility in the genesis of carbonatites — An experimental study
    • 219
    Liquid immiscibility and the origin of alkali-poor carbonatites
    • 119
    • PDF
    Carbonatite tuffs in the Laetolil Beds of Tanzania and the Kaiserstuhl in Germany
    • 47
    Melilitite-carbonatite tuffs in the Laetolil Beds of Tanzania
    • 62
    Outline of the petrology of the Kenya rift alkaline province
    • B. H. Baker
    • Geology
    • Geological Society, London, Special Publications
    • 1987
    • 138
    Continental Rifting and Mantle Degassing
    • 71