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Radioelement geochemistry of Irish granites

Published online by Cambridge University Press:  05 July 2018

Patrick J. O'Connor
Patrick J. O'Connor*
Affiliation:
Geological Survey of Ireland, 14 Hume Street, Dublin 2, Ireland
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Abstract

Data for U, Th, and K, determined by neutron activation analysis, in 128 rock samples from 14 Irish Caledonian and Tertiary granite plutons are sum-marized. Irish Newer Caledonian granites (ninety-four samples) have values of radioelements (average 3.6 ppm U, 12.1 ppm Th, and 3.4% K) consistent with derivation from a source of broadly uniform composition. U mineralization occurs in the voluminous and forcefully emplaced Main Donegal and Leinster plutons whereas smaller passively emplaced granites (Galway, Barnesmore, Rosses) lack mineralization. Irish Tertiary granites (thirty-four samples), which represent small batches of highly fractionated acid magmas, show moderate or high radioelement contents (11.5 ppm U, 39.9 ppm Th, 4.5% K) but are not mineralized. It is concluded that the use of elevated radioelement contents as a criterion of granite ‘fertility’ may be misleading in the British Isles Caledonian Province. The radioelement chemistry of granites may reflect their source composition more closely than expected for differentiated and/or contaminated acid melts.

Type
Research Article
Information
Mineralogical Magazine , Volume 44 , Issue 336 , December 1981 , pp. 485 - 495
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1981

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References

Akaad, M. K. (1956). J. geol. Soc. London, 112, 112-88.Google Scholar
Bailey, E. B. and McCallien, W. J. (1956). Liverpool Manchester geol. J. 1, 1-501.Google Scholar
Basham, I. R., Vairinho, M. M. B., and Bowles, J. F. W. (1979). Paper Tc-295-1, Geology of vein and similar type uranium deposits, I.A.E.A. (Lisbon).Google Scholar
Beckinsale, R. D. (1974). Earth Planet. Sci. Lett. 22, 22-74.CrossRefGoogle Scholar
Bowie, S. H. U., Simpson, P. R., and Rice, C. M. (1973). In Jones, M. J. (ed.), Geochemical Exploration, Inst. Mining Metall. 359-72.Google Scholar
Brindley, J. C. (1969). In Kay, M. (ed.), North Atlanticgeology and continental drift, Mere. 12 Am. Assoc. Pet. geol., 336-53.Google Scholar
Brindley, J. C. (1973). Sci. Proc. R. Dublin Soc. 5A, 27-36.Google Scholar
Brown, G. C. and Locke, C. A. (1979). Earth Planet. Sci. Lett. 45, 69-79.CrossRefGoogle Scholar
Brown, G. C. and O'Connor, P. J. (1978). Geophys. J.R. astron. Soc. 53, 177.Google Scholar
Brück, P. M. (1974). Bull. geol. Surv. Ireland, 1, 1-93.Google Scholar
Brück, P. M. and O'Connor, P. J. (1977). Ibid. 2, 2-41.Google Scholar
Brück, P. M. (1980). Ibid. 2, 2-70.Google Scholar
Bullerwell, W. (1961). Irish Nat. J. 13, 255-7.Google Scholar
Bullerwell, W. (1972). Phil. Trans. R. Soc. London, 271A, 209-15.Google Scholar
Burke, K. C., Cunningham, M. A., Gallagher, M. J., and Hawkes, J. R. (1964). Econ. Geol. 59, 59-50.CrossRefGoogle Scholar
Chappel, B. W. and White, A. J. R. (1974). Pacific Geol. 8, 8-74.Google Scholar
Cook, A. H. and Murphy, T. (1952). Geophys. Mem. Dubl. Inst. Adv. Studies, 2 (4), 27 pp.Google Scholar
Emeleus, C. H. (1955). Sci. Proc. R. Dublin Soc. 27, 27-50.Google Scholar
Emeleus, C. H. (1962). Proc. R. Irish Acad. 62B, 55-76.Google Scholar
Faure, G. and Powell, J. L. (1972). Strontium Isotope Geology, Springer-Verlag (New York).CrossRefGoogle Scholar
Hall, A. (1967). Geol. Mag. 104, 99-109.CrossRefGoogle Scholar
Halliday, A. N., Aftalion, M., van Breemen, O., and Jocelyn, J. (1979). In Harris, A. L., Holland, C. H., and Leake, B. E. (eds.), The Caledonides of the British Islesreviewed. Spec. Pub. No. 8 Geol. Soc. London, 653-61.Google Scholar
Halliday, A. N. and Leake, B. E. (1980). Nature, London, 284, 542-3.CrossRefGoogle Scholar
Harmon, R. S. and Halliday, A. N. (1980). Ibid. 283, 215.Google Scholar
Hennessy, J. (1979). Ph.D. thesis. University of Liverpool.Google Scholar
Holder, M. T. (1979). In Atherton, M. P. and Tarney, J. (eds.), Origin of granite batholiths: geochemical evidence, Shiva Publishing, 116-28.Google Scholar
Hutton, D. (1981). J. Struct. Geol. 3, 93.Google Scholar
Inamdar, D. D. and Kelly, T. J. (1979). Bull. geol. Surv. Ireland, 2, 2-48.Google Scholar
Lawrence, G. (1975). In Elliott, I. L. and Fletcher, W. K. (eds.), Geochemical exploration 1974, 353-70 (Elsevier).Google Scholar
Le Bas, M. J. (1960). Trans. R. Soc. Edinburgh, 64, 64-200.Google Scholar
Le Bas, M. J. (1967). Proc. R. Irish Acad. 65B, 325-38.Google Scholar
Leake, B. E. (1978). In Bowes, D. R. and Leake, B. E. (eds.), Geol. J. Spec. Issue No. 10, 221-48.Google Scholar
Mann, H. B. and Whitney, D. R. (1947). Ann. Math. Statist. 18, 50-60.Google Scholar
Max, M. D., Long, C. B., and Geoghegan, M. A. (1978). Bull. geol. Surv. Ireland, 2, 2-33.Google Scholar
Meighan, I. G. and Gamble, J. A. (1972). Nature Phys. Sci. 240, 183-4.CrossRefGoogle Scholar
Moorbath, S. (1962). Phil. Trans. R. Soc. London, 254A, 295-360.Google Scholar
Moorbath, S. and Bell, J. D. (1965). J. Petrol. 6, 6-66.CrossRefGoogle Scholar
Moorbath, S. and Welke, H. (1968). Earth planet. Sci. Lett. 1, 1-17.Google Scholar
Moorbath, S. (1969). Ibid. 5, 5-30.Google Scholar
Moreau, M. (1977). In Jones, M. J. (ed.), Geology, mining and extractive processing of uranium, Inst. Mining Metall. 83-102.Google Scholar
O'Connor, P. J. (1974). Bull. geol. Surv. Ireland, 1, 1-5.Google Scholar
O'Connor, P. J. (1975). Sci. Proc. R. Dublin Soc. 5A, 407-13.Google Scholar
O'Connor, P. J. (1976). Geol. Mag. 113, 389-91.CrossRefGoogle Scholar
O'Connor, P. J. (1981). Geol. Surv. Ireland Rep. Series RS 81/1 (Geophysics) 26 pp.Google Scholar
O'Connor, P. J. and Brück, P. M. (1978). J. Earth Sci. R. Dublin Soc. 1, 1-13.Google Scholar
O'Connor, P. J. and Reeves, T. J. (1979). Bull. geol. Surv. Ireland, 2, 307-14.Google Scholar
O'Connor, P. J., Hennessy, J., Brük, P. M., and Williams, C. T. (1981a). Geol. Mag. (in press).Google Scholar
O'Connor, P. J., Long, C. B., and Hennessy, J. (198lb). Bull. geol. Surv. Ireland (in press).Google Scholar
O'Connor, P. J., Kennan, P. S., Halliday, A. N., and Max, M. D. (1981c). Uppsala Caledonide meeting (in press).Google Scholar
O'Connor, P. J., Reeves, T. J., and Hennessy, J. (1981d). Bull. geol. Surv. Ireland, 3, 3-16.Google Scholar
Pankhurst, R. J. (1979). In Atherton, M. P. and Tarney, J. (eds.), Origin of granite batholiths: geochemical evidence, Shiva Publishing, 34-44.Google Scholar
Pankhurst, R. J., Sutherland, D. S., Brown, G. C., and Pitcher, W. S. (1981). In Sutherland, D. S. (ed.), Igneous Rocks of the British Isles, John Wiley and Sons Ltd., 149–190.Google Scholar
Patterson, E. M. (1953). Proc. R. Irish Acad. 55B, 171 88.Google Scholar
Pidgeon, R. T. and Aftalion, M. (1978). Geol. J. Spec. Issue, No. 10, 10-220.Google Scholar
Pitcher, W. S. (1953). J. geol. Soc. London, 108, 413-41.CrossRefGoogle Scholar
Pitcher, W. S. and Berger, A. R. (1972). The Geology of Donegal, Wiley-Interscience.Google Scholar
Pitcher, W. S. and Read, H. H. (1959). J. geol. Soc. London, 114, 259-300.CrossRefGoogle Scholar
Pitcher, W. S. and Read, H. H. (1960). Ibid. 116, 1-36.Google Scholar
Plant, J., Brown, G. C., Simpson, P. R., and Smith, R. T. (1980). Trans. Inst. Mining Metall. 89B, 198-210.Google Scholar
Read, H. H. (1961). Liverpool Manchester geol. J. 2, 653-83.CrossRefGoogle Scholar
Reynolds, D. L. (1944). J. geol. Soe. London, 99, 205-40.Google Scholar
Reynolds, D. L. (1951). Trans. R. Soc. Edinburgh, 62, 85-143.CrossRefGoogle Scholar
Richey, J. E. (1932). Trans. geol. Soc. Glasgow, 19, 19-140.Google Scholar
Rogers, J. J. W. and Adams, J. A. S. (1969). In Wedepohl, K. H. (ed.), Handbook of Geochemistry, Springer-Verlag, 2,92.Google Scholar
Siegel, S. (1956). Nonparametric statistics for the behavioural sciences, McGraw-Hill.Google Scholar
Simpson, P. R., Plant, J., and Cope, M. J. (1976). In Jones, M. J. (ed.), Geology, mining and extractive processing of uranium, Inst. Mining Metall. 126-39.Google Scholar
Simpson, P. R., Brown, G. C., Plant, J., and Ostle, D. (1979). Phil. Trans. R. Soc. London, 291A, 385412.Google Scholar
Stanton, W. I. (1960). J. geol. Soc. London, 116, 269-90.CrossRefGoogle Scholar
Steiger, R. (1977). In Prospecting in areas of glaciated terrain, Instn. Mining Metall. 14–24.Google Scholar
Tammemagi, H. Y. (1976). Geol. Mag. 113, 2716.CrossRefGoogle Scholar
Tammemagi, H. Y. and Smith, M. L. (1975). J. geol. Soc. London, 131, 415-27.CrossRefGoogle Scholar
Taylor, H. P. and Forester, R. W. (1971). J. Petrol. 12, 465-97.CrossRefGoogle Scholar
Thirlaway, H. I. S. (1951). Geophys. Mem. Dubl. Inst. Adv. Studies, 2 (2), 26 pp.Google Scholar
Thornton, C. P. and Tuttle, O. F. (1960). Am. J. Sci. 258, 66484.CrossRefGoogle Scholar
Walker, G. P. L. and Leedal, G. P. (1954). Sci. Proc. R. Dublin Soc. 26, 20743.Google Scholar
York, D. (1969). Earth Planet. Sci. Lett. 5, 5-4.Google Scholar
Young, D. G. G. (1974). Proc. R. Irish Acad. 74B, 63-73.Google Scholar