Abstract
The interpretation of rocks of the British Tertiary Volcanic Province has played an important role in the historical development of many concepts in igneous petrology. Exposures of lavas, sub-volcanic rocks and plutonic complexes have allowed a detailed understanding of the field relationships between such units in the context of flood-basalt magmatism1,2,3. Nevertheless, age control has been a source of much controversy and a limiting factor in comparing these relationships to recent developments in the theoretical modelling of magmatism within continents4. Here we report precise 206Pb/238U zircon ages of 60.53 ± 0.08 Myr (2σ) for the Rum basic/ultrabasic pluton and 58.91 ± 0.07 Myr for the Cuillin gabbros, Skye, which tightly constrain eruption of the greater than 1.5-km-thick Skye lavas to a maximum duration of 1.6 ± 0.2 Myr. These dates yield magma production rates for the Skye lavas of about 2.2 × 10−3 km3 yr−1 comparable with rates inferred for individual magmatic centres produced by melting related to mantle plumes below ocean basins. In addition, the approximately 30 km of lithospheric thinning suggested by magma chemistry is required to have occurred in less than 2 Myr.
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References
Harker, A. The Tertiary Igneous Rocks of Skye(HMSO, Edinburgh, (1904)).
Thompson, R. N. Magmatism in the British Tertiary Volcanic Province. Scott. J. Geol. 18, 49–107 (1982).
Emeleus, C. H. & Gyopari, M. C. British Tertiary Volcanic Province(Chapman & Hall, London, (1992)).
White, R. S. & McKenzie, D. P. Mantle plumes and flood basalts. J. Geophys. Res. 100, 17543–17585 (1995).
Anderson, F. W. & Dunham, K. C. The Geology of Northern Skye(HMSO, Edinburgh, (1966)).
England, R. W. The structure of the Skye Lava field. Scott. J. Geol. 30, 33–37 (1994).
Williamson, I. T. & Bell, B. R. The Palaeocene lava field of west-central Skye, Scotland: stratigraphy, palaeogeography and structure. Trans. R. Soc. Edinb.: Earth Sci. 85, 39–75 (1994).
Pearson, D. G., Emeleus, C. H. & Kelley, S. P. Precise 40Ar/39Ar age for the initiation of Palaeogene volcanism in the Inner Hebrides and its regional significance. J. Geol. Soc. Lond. 158, 815–818 (1996).
Saunders, A. D., Fitton, J. G., Kerr, A. C., Norry, M. J. & Kent, R. W. in Large Igneous Provinces(eds Mahoney, J. & Coffin, M. F.) 45–93 (Geophys. Monogr. 100, Am. Geophys. Union, Washington DC, (1997)).
Thompson, R. N., Esson, J. & Dunham, A. C. Major element chemical variation in the Eocene lavas of the Isle of Skye, Scotland. J. Petrol. 13, 219–253 (1972).
Mattey, D. P., Gibson, I. L., Marriner, G. F. & Thompson, R. N. The diagnostic geochemistry, relative abundance and spatial distribution of high-calcium, low-alkali olivine tholeiite dykes in the Lower Tertiary regional dyke swarm of the Isle of Skye, NW Scotland. Mineral. Mag. 41, 273–285 (1977).
Thompson, R. N., Gibson, I. L., Marriner, G. F., Mattey, D. P. & Morrison, M. A. Trace element evidence of multi-stage mantle fusion and polybaric fractional crystallisation in the Palaeocene lavas of Skye, NW Scotland. J. Petrol. 21, 265–293 (1980).
Ellam, R. M. Lithospheric thickness as a control on basalt geochemistry. Geology 20, 153–156 (1992).
Meighan, I., Hutchison, R., Williamson, I. & Macintyre, R. M. Geological evidence for the different relative ages of the Rhum and Skye Tertiary central complexes.(abstr.) J. Geol. Soc. Lond. 139, 659 (1981).
Dickin, A. P., Brown, J. L., Thompson, R. N., Halliday, A. N. & Morrison, M. A. Crustal contamination and the granite problem in the British Tertiary Volcanic Province. Phil. Trans. R. Soc. Lond. A 310, 755–780 (1984).
Walker, G. P. L. in Magmatic Processes and Plate Tectonics(eds Pritchard, H. M., Alabaster, T., Harris, N. B. W. & Neary, C. R.) 489–497 (Spec. Publ. 76, Geol. Soc., London, (1993)).
Mussett, A. E. 40Ar–39Ar step heating ages of the Tertiary igneous rocks of Mull, Scotland. J. Geol. Soc. Lond. 143, 887–896 (1986).
Renne, P. R., Deckart, K., Ernesto, M., Feraud, G. & Piccirillo, E. M. Age of the Ponta-Grossa dike swarm (Brazil), and implications to Parana flood volcanism. Earth Planet. Sci. Lett. 144, 199–211 (1996).
Jolley, D. W. in Palaeosurfaces: Recognition, Reconstruction & Palaeoenvironmental Interpretation(ed. Widdowson, M.) 67–94 (Spec. Publ. 120, Geol. Soc., London, (1997)).
Langmuir, C. H., Klein, E. M. & Plank, T. in Mantle Flow and Melt Generation at Mid-Ocean Ridges(eds Phipps-Morgan, J., Blackman, D. K. & Sinton, J. M.) 183–281 (Geophys. Monogr. 71, Am. Geophys. Union, Washington DC, (1992)).
Thompson, R. N. Primary basalts and magma genesis. Contrib. Mineral. Petrol. 45, 317–341 (1974).
Scarrow, J. H. & Cox, K. G. Basalts generated by decompressive adiabatic melting of a mantle plume: a case study from the Isle of Skye, NW Scotland. J. Petrol. 36, 3–22 (1995).
Kitchen, D. E. The parental magma on Rhum: evidence from alkaline segregations and veins in the peridotite from Salisbury's Dam. Geol. Mag. 122, 529–537 (1985).
Kerr, A. C. Lithospheric thinning during the evolution of continental large igneous provinces: A case study from the North Atlantic province. Geology 22, 1027–1030 (1994).
Dickin, A. P. Isotope geochemistry of Tertiary igneous rocks from the Isle of Skye. J. Petrol. 22, 155–189 (1981).
Berggren, W., Kent, D. V., Swisher, C. C. & Aubury, M.-P. in Geochronology, Time Scales and Global Stratigraphic Correlation(eds Berggren, W., Kent, D. V., Aubury, M.-P. & Hardenbol, J.) 129–212 (Spec. Publ., Soc. Economic Palaeontologists and Mineralogists, (1995)).
McDougall, I. & Harrison, T. M. Geochronology and Thermochronology by the 40Ar/39Ar Method(Oxford Univ. Press, (1988)).
Parrish, R. R., Roddick, J. C., Loveridge, W. D. & Sullivan, R. W. Uranium-lead analytical techniques at the geochronology laboratory. Geol. Surv. Can. Pap. 87-2, 3–7 (1987).
Acknowledgements
We thank J. Wartho for assistance with the laser argon extractions, and the staff of the GSC's Geochronology laboratory for help with the U-Pb analyses. Reviews from P. Renne, R. Duncan and K. Ludwig and S. Bergman improved the manuscript.
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Hamilton, M., Pearson, D., Thompson, R. et al. Rapid eruption of Skye lavas inferred from precise U–Pb and Ar–Ar dating of the Rum and Cuillin plutonic complexes. Nature 394, 260–263 (1998). https://doi.org/10.1038/28361
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DOI: https://doi.org/10.1038/28361
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