Skip to main content Accessibility help
×
×
Home

Isotopic age determinations on clay minerals from lavas and tuffs of the Derbyshire orefield

  • P. R. Ineson (a1) and J. G. Mitchell (a2)

Summary

Episodic hydrothermal mineralization has previously been recognized in the northern section of the Pennine orefield. Igneous rocks from the southern section (the Derbyshire orefield) have yielded isotopic ages, some of which are thought to represent ages of hydrothermal metasomatism (deuteric or subsequent). In order to ascertain whether epicyclic hydrothermal events gave rise to the Derbyshire mineral deposits, samples of highly altered doleritic lava and pumice tuff were collected adjacent to areas of mineralization. Clay-mineral concentrates from 34 samples were dated by the potassium–argon method. The conclusions drawn from these analyses support a hypothesis of repeated hydrothermal alteration of the clay minerals, reflecting at least two episodes of mineralization, one about 270 m.y., the other about 235 m.y. The geo-chronological significance of these and other results is considered.

Copyright

References

Hide All
Allport, S. 1874. On the microscopic structure and composition of British Carboniferous dolerites. Q. Jl geol. Soc. Lond. 30, 529–67.
Alsop, J. 1845. On the Toadstones of Derbyshire. Rep. Brit. Assoc. for 1844. Notes & Abstracts, 51–2.
Arnold-Bemrose, H. H. 1894. On the microscopical structure of the Carboniferous dolerites and tuffs of Derbyshire. Q. Jl geol. Soc. Lond. 50, 603–43.
Arnold-Bemrose, H. H. 1898. On a quartz rock in the Carboniferous Limestone of Derbyshire. Q. Jl geol. Soc. Lond. 54, 169–83.
Arnold-Bemrose, H. H. 1907. The toadstones of Derbyshire; their field relations and petrography. Q. Jl geol. Soc. Lond. 63, 241–81.
Cope, F. W. 1949. The Woodale borehole, near Buxton. Abs. Proc. geol. Soc. Lond. No. 1446, p. 24 and Q. Jl geol. Soc. Lond. 105, p. IV.
Dalrymple, G. B. & Lanphere, M. A. 1969. Potassium Argon Dating. W. H. Freeman & Co., San Francisco. 258 pp.+xiv.
Dunham, K. C. 1952 a. Age-relations of the epigenetic mineral deposits of Britain. Trans. geol. Soc. Glasg. 21, 395429.
Dunham, K. C. 1952 b. Fluorspar. 4th edit. Mem. geol. Surv. Gt. Br., Min. Resources, 4, 143 pp.
Dunham, K. C. & Dines, H. G. 1945. Barium minerals in England and Wales. Wartime Pamph. geol. Surv. Gt. Br. 46, 150 pp.
Dunham, K. C., Fitch, F. J., Ineson, P. R., Miller, J. A. & Mitchell, J. G. 1968. The geochronological significance of argon-40/argon-39 age determinations on White Whin from the northern Pennine orefield. Proc. R. Soc. A. 307, 251–66.
Eden, R. A., Orme, G. R., Mitchell, M. & Shirley, J. 1964. A study of part of the margin of the Carboniferous Limestone ‘massif’ in the Pin Dale area, Derbyshire. Bull. geol. Surv. Gt. Br. 21, 73118.
Fitch, F. J. & Miller, J. A. 1964. The age of the paroxysmal Variscan orogeny in England in ‘The Phanerozoic Time-Scale’. Q. Jl geol. Soc. Lond. 1205, 159–75.
Fitch, F. J., Miller, J. A. & Williams, S. C. 1967. Isotopic ages of British Carboniferous rocks. C.r. 6th Int. Congr. Carb. Strat. Geol. (Sheffield, 1967). Publ. 1970, 2, 771–89.
Ford, T. D. 1967. Some mineral deposits of the Carboniferous Limestone of Derbyshire. In Neves, R. & Downie, C. (Eds): Geological Excursion in the Sheffield Region, pp. 5375. University of Sheffield.
Ford, T. D. 1969. The stratiform ore-deposits of Derbyshire. In James, C. H. (Ed): Sedimentary ores. (Proc. 15th Inter. University geol. congr. Leicester 1967). Department of Geology, University of Leicester.
Francis, E. H. & Woodland, A. W. 1964. The Carboniferous Period in ‘The Phanerozoic Time-Scale’. Q. Jl geol. Soc. Lond. 1205, 221–32.
Ineson, P. R. & Al-Kufaishi, F. A. M. 1970. The minerology and paragenetic sequence of Long Rake Vein at Raper Mine, Derbyshire. Me cian Geol. 3, 337–51.
Ineson, P. R., Richardson, R. T. & Wood, G. H. 1972. A Baryte–Galena vein in the Magnesian Limestone at Whitwell, Derbyshire. Proc. Yorks. geol. Soc. 39 (1), 139149.
King, R. J. 1968. Mineralization (Sect. F and G) In Sylvester-Bradley, P. C. & Ford, T. D. (Eds): Geology of the East Midlands, pp. 123–37. University of Leicester.
Moorbath, S. 1962. Lead isotope abundance studies on mineral occurrences in the British Isles and their geological significance. Phil. Trans. R. Soc. Series A, 254, 295360.
Sargent, H. C. 1912. On the origin of certain clay-bands in the limestone of the Crich Inlier. Geol. Mag. 9, 406–12.
Schnellmann, G. A. & Willson, J. D. 1947. Lead–zinc mineralization in north Derbyshire. Trans. Instn. Min. Metall, 56, 549–85.
Shirley, J. 1950. The Stratigraphical Distribution of the Lead–Zinc ores of Millclose Mine, Derbyshire and the future prospects of the area. Rep. XVIII Inter. Geol. Cong., Pt VII, pp. 353–61.
Shirley, J. 1959. The Carboniferous Limestone of the Monyash–Wirksworth Area, Derbyshire. Q. Jl geol. Soc. Lond. 114, 411–29.
Shirley, J. & Horsfield, E. L. 1945. The structure and ore deposits of the Carboniferous Limestone of the Eyam District, Derbyshire. Q. Jl geol. Soc. Lond. 100, 289310.
Smith, E. G., Rhys, G. H. & Eden, R. A. 1967. Geology of the country around Chester-field, Matlock and Mansfield. Mem. geol. Surv. Gt. Br. London, 430 pp.+viii.
Stevenson, I. P. & Gaunt, G. D. 1971. Geology of the country around Chapel-en-le-Frith. Mem. geol. Surv. Gt. Br. London, 444 pp.+xii.
Stevenson, I. P., Harrison, R. K. & Snelling, N. J. 1970. Potassium–argon age determinations of the Waterswallows Sill, Buxton, Derbyshire. Proc. Yorks. geol. Soc. 37, 445–7.
Tomkieff, S. I. 1926. On some chloritic minerals associated with the basaltic Carboniferous rocks of Derbyshire. Mineralog. Mag. 21, 7382.
Triall, J. G. 1940. Notes on the Lower Carboniferous limestones and toadstones at Millclose Mine, Derbyshire. Trans. Inst. Min. Metal. 49, 191229.
Varvill, W. W. 1959. The future of lead–zinc and fluorspar mining in Derbyshire. In The future of non-ferrous mining in Gt. Br. and Ireland (London, Instn. of Min. and Metall. 1959), 175203.
Wilcockson, W. H. 1932. In Fearnsides, W. G., Bisat, W. S., Edwards, W., Lewis, H. P. & Wilcockson, W. H. The geology of the eastern part of the Peak District. Pt. V. Igneous rocks and mineralization of the High Peak of Derbyshire. Proc. Geol. Ass. 43, 184–90.
Wilkinson, P. 1967. Volcanic rocks in the Peak District. In Neves, R. & Downie, C. (Eds): Geological Excursions in the Sheffield Region, pp. 4753. University of Sheffield.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Geological Magazine
  • ISSN: 0016-7568
  • EISSN: 1469-5081
  • URL: /core/journals/geological-magazine
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed