Layers of mafic and ultramafic intrusive rocks forming the mountain of Hallival

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,[1] the remains of the eroded, solidified magma chamber of an extinct volcano[2] that was active during the Palaeogene Period.[3] It is associated with the nearby Skye intrusion and Skye, Mull and Egg lavas.[4] It was emplaced 60 million years ago above the Iceland hotspot.[5][6]

Thin section of gabbro from Rum

References

  1. ^ Upton, Brian G.J.; Troll, Valentin R.; Emeleus, C. Henry; Donaldson, Colin H. (July 2023). "The Central Series of the Rum Igneous Complex, NW Scotland: the rises and falls of magma in a large mafic‐ultramafic volcano". Geology Today. 39 (4): 130–143. doi:10.1111/gto.12441. ISSN 0266-6979.
  2. ^ Troll, V R; Mattsson, T; Upton, B G J; Emeleus, C H; Donaldson, C H; Meyer, R; Weis, F; Dahrén, B; Heimdal, T H (1 October 2020). "Fault-Controlled Magma Ascent Recorded in the Central Series of the Rum Layered Intrusion, NW Scotland". Journal of Petrology. 61 (10). doi:10.1093/petrology/egaa093. hdl:10023/23208. ISSN 1460-2415.
  3. ^ Emeleus, C.H.; Troll, V.R. (2008). A geological excursion guide to Rum : the Palaeocene igneous rocks of the Isle of Rum, Inner Hebrides. Edinburgh [Scotland]: Edinburgh Geological Society. ISBN 978-1-905267-22-4. OCLC 437092879.
  4. ^ 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.
  5. ^ 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. S2CID 4369690.
  6. ^ 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. S2CID 128746773.


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