The Petrology of Thingmuli, a Tertiary Volcano in Eastern Iceland

  title={The Petrology of Thingmuli, a Tertiary Volcano in Eastern Iceland},
  author={Ian Carmichael},
  journal={Journal of Petrology},
The Tertiary flood-basalt sequence of eastern Iceland is intermittently disturbed by central volcanic activity with the voluminous eruption of acid magma. Associated with one of these central volcanoes, described in this paper, is an intense swarm of acid and basic dykes, a set of acid cone-sheets, and extensive superimposed hydrothermal alteration. The lavas and intrusions which make up the volcano grade in composition from olivine-tholeiites, through olivine-free tholeiites, basaltic… Expand
Accretionary volcanic processes and the crystal structure of Iceland
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  • G. Walker
  • Geology
  • Quarterly Journal of the Geological Society of London
  • 1958
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Zeolite Zones and Dike Distribution in Relation to the Structure of the Basalts of Eastern Iceland
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The crystallization of feldspar in volcanic acid liquids
  • I. Carmichael
  • Geology
  • Quarterly Journal of the Geological Society of London
  • 1963
The paths of feldspar crystallization in volcanic acid liquids can be illustrated by the relationship of feldspar phenocrysts to groundmass feldspar in porphyritic pitchstones and rhyolites. In thisExpand
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