Rum layered intrusion

The Rum layered intrusion is located in Scotland, on the island of Rùm (Inner Hebrides). It is a mass of intrusive rock, of mafic-ultramafic composition, the remains of the eroded, solidified magma chamber of an extinct volcano that was active during the Palaeogene Period. It is associated with the nearby Skye intrusion and Skye, Mull and Egg lavas.[1] It was emplaced 60 million years ago above the Iceland hotspot.[2][3]

Thin section of gabbro from Rum
Layers of mafic and ultramafic intrusive rocks forming the mountain of Hallival

References
  1. Bell, B. R.; Williamson, I. T. (2002). "Tertiary igneous activity". In Trewin, N. H. (ed.). The Geology of Scotland (4th ed.). Geological Society of London. ISBN 9781862393905.
  2. Hamilton, M. A.; Pearson, D. G.; Thompson, R. N.; Kelley, S. P.; Emeleus, C. H. (16 July 1998). "Rapid eruption of Skye lavas inferred from precise U–Pb and Ar–Ar dating of the Rum and Cuillinplutonic complexes". Nature. 394 (6690): 260–263. doi:10.1038/28361.
  3. Kent, R. W. (1 November 1995). "Magnesian basalts from the Hebrides, Scotland: chemical composition and relationship to the Iceland plume". Journal of the Geological Society. 152 (6): 979–983. doi:10.1144/GSL.JGS.1995.152.01.17.
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