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Potassium–argon ages from the Tertiary Ring Complexes of the Ardnamurchan Peninsula, Western Scotland

Published online by Cambridge University Press:  01 May 2009

J. G. Mitchell
Affiliation:
School of Physics, The University, Newcastle upon Tyne, NE1 7RU
K. P. Keen
Affiliation:
School of Physics, The University, Newcastle upon Tyne, NE1 7RU

Summary

Potassium–argon age studies on the central intrusion complexes of Ardnamurchan, Western Scotland, indicate that they were emplaced at a time between 59 and 61 Ma ago. The time period associated with the cooling was probably less than of the order of a million years. The temporal setting of the Ardnamurchan complexes in the context of the other British Tertiary igneous centres is examined in the light of the new data.

Type
Articles
Copyright
Copyright © Cambridge University Press 1973

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References

Dalrymple, G. B. & Lanphere, M. A. 1969. Potassium—argon dating. W. H. Freeman, San Francisco. 184 pp.Google Scholar
Dodson, M. H. & Long, L. E. 1962. Age of Lundy Granite, Bristol Channel. Nature, Lond. 195, 975–6.CrossRefGoogle Scholar
Durrance, E. M. 1967. Photoelastic Stress Studies. Proc. Geol. Ass. 78, 298318.Google Scholar
Grasty, R. L. & Miller, J. A. 1965. The Omegatron: a useful tool for argon isotope investigations. Nature, Lond. 207, 1146–8.CrossRefGoogle Scholar
Long, L. E. 1964. Preliminary Rb-Sr investigation of Tertiary granite and granophyre from Skye. Geochim. cosmochim. Acta. 28, 1870–3.CrossRefGoogle Scholar
MacGregor, A. G. & Anderson, F. W. 1961. Scotland: The Tertiary Volcanic Districts. British Regional Geology. H.M.S.O.Google Scholar
Miller, J. A. & Brown, P. E. 1964. How old is Scotland? Advmt Sci. 20, 527–39.Google Scholar
Miller, J. A. 1965. Potassium–argon age studies in Scotland. Geol. Mag. 102, 106–34.CrossRefGoogle Scholar
Miller, J. A. & Fitch, F. J. 1962. Age of the Lundy Island Granites. Nature, Lond. 195, 553–5.CrossRefGoogle Scholar
Miller, J. A. & Harland, W. B. 1963. Age of some Tertiary intrusive rocks in Arran. Mineralog. Mag. 261, 521–3.Google Scholar
Miller, J. A. & Mohr, P. A. 1965. Potassium–argon age determinations on rocks from St Kilda and Rockall. Scott. J. Geol. 1, 93–9.CrossRefGoogle Scholar
Moorbath, S. & Bell, J. D. 1965. Strontium isotope abundance studies and rubidiumstrontium age determinations on Tertiary igneous rocks from the Isle of Skye, North-west Scotland. J. Petrology 6, 3766.CrossRefGoogle Scholar
Purdy, J. W., Mussett, A. E., Charlton, S. R., Eckford, M. J. & English, H. N. 1972. The British Tertiary igneous province: Potassium–argon ages of the Antrim Basalts. Geophys. J. R. astr. Soc. 27, 327–35.CrossRefGoogle Scholar
Richey, J. E. 1933. Summary of the geology of Ardnamurchan. Proc. Geol. Ass. 44, 156.CrossRefGoogle Scholar
Richey, J. E. & Thomas, H. H. 1930. The geology of Ardnamurchan, North-west Mull and Coll. Mem. Geol. Survey of Gt Br. H.M.S.O.Google Scholar
Tarling, D. H. & Gale, N. H. 1968. Isotopic dating and palaeomagnetic polarity in the Faroe Islands. Nature, Lond. 218, 1043–4.CrossRefGoogle Scholar