Hostname: page-component-848d4c4894-8kt4b Total loading time: 0 Render date: 2024-06-28T13:09:46.876Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on sheath and core structure in the Mull pitchstones

Published online by Cambridge University Press:  01 May 2009

D. J. Drysdale
D. J. Drysdale
Affiliation:
Department of Geology and Mineralogy, University of Queensland, St Lucia, Queensland 4067, Australia
Get access Rights & Permissions [Opens in a new window]

Summary

Sheath and core structure results from secondary hydration and devitrification, initiated at relatively high temperatures during cooling, of the intrusive pitchstone sheets. Less than 0.5% of the water present is an original magma component.

Type
Articles
Information
Geological Magazine , Volume 116 , Issue 2 , March 1979 , pp. 99 - 104
Copyright
Copyright © Cambridge University Press 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Adams, R. V. 1961. Infra-red absorption due to water in glasses. Physics Chem. Glasses 2, 39–49.Google Scholar
Anderson, E. M. & Radley, E. G. 1915. The pitchstones of Mull and their genesis. Q. Jl geol. Soc. Lond. 71, 205–17.CrossRefGoogle Scholar
Bailey, E. B. & Wright, W. B. 1924. Tertiary and post-Tertiary geology of Mull, Loch Aline, and Oban. Mem. geol. Surv. Scot.Google Scholar
Bailey, E. G. & Anderson, E. M. 1925. The geology of Staffa, Iona, and Western Mull. Mem. geol. Surv. Scot.Google Scholar
Chenebaux, J., Bordet, P. & Sabatier, G. 1960. On the conditions of formation of obsidians. C.r. Acad. Sci., Paris 250, 1679–80.Google Scholar
Drysdale, D. J., Lacy, E. D. & Tarney, J. 1963. ‘Water minus’ (H2O−) in natural glasses. Analyst, Lond. 88, 131–3.CrossRefGoogle Scholar
Friedman, I. & Smith, R. L. 1958. The deuterium content of water in some volcanic glasses. Geochim. cosmochim. Acta 15, 218–28.CrossRefGoogle Scholar
Friedman, I., Long, W. & Smith, R. L. 1963. Viscosity and water content of rhyolite glass. J. Geophys. Res. 68, 6523–35.CrossRefGoogle Scholar
Friedman, I., Smith, R. L. & Long, W. D. 1966. Hydration of natural glass and formation of perlite. Bull. geol. Soc. Am. 77, 323–7.CrossRefGoogle Scholar
Geikie, A. 1880. The pitchstone of Eskdale. Proc. R. Phys. Soc. Edin. 5, 219–55.Google Scholar
Haller, W. 1960. Kinetics of the transport of water through silicate glasses at ambient temperatures. Physics Chem. Glasses 1, 46–51.Google Scholar
Haller, W. 1963. Concentration-dependent diffusion coefficient of water in glass. Physics Chem. Glasses 4, 217–20.Google Scholar
Harker, A. 1904. The Tertiary igneous rocks of Skye. Mem. geol. Surv. U.K.Google Scholar
Keller, W. D. & Pickett, E. E. 1954. Hydroxyl and water in perlite from Superior, Arizona. Am. J. Sci. 252, 87–98.CrossRefGoogle Scholar
King, G. E., Todd, S. S. & Kelley, K. K. 1948. Perlite - thermal data, and energy required for expansion. U.S. Bureau Mines Dept Investigation No. 4394.Google Scholar
Lacy, E. D. 1966. The hydration and dehydration of aluminosilicate glasses. Vetro Silic. 10, 5–9.Google Scholar
Lee, R. W. 1964. On the role of hydroxyl in the diffusion of hydrogen in fused silica. Physics Chem. Glasses 5, 35–43.Google Scholar
Marshall, R. R. 1961. Devitrification of natural glass. Bull. geol. Soc. Am. 72, 1493–1520.CrossRefGoogle Scholar
Moulson, A. J. & Roberts, J. P. 1960. Water in silica glass. Trans. Br. Ceram. Soc. 59, 388–99.Google Scholar
Nasedkin, V. V. 1964. Volatile components of volcanic glasses. Geochemistry 1, 317–30.Google Scholar
Nasedkin, V. V. & Petrov, V. P. 1962. Experimental production of a perlitic structure in volcanic glass. Dokl. Acad. Sci. U.S.S.R. 146, 153–5.Google Scholar
Otvos, E. G. 1961. Pumice and perlite in a rhyolite complex in Hungary. Econ. Geol. 56, 1112–22.CrossRefGoogle Scholar
Richey, J. E. & Thomas, H. H. 1930. The Geology of Ardnamurchan, North-west Mull and Coll. Mem. geol. Surv. Scot.Google Scholar
Ross, C. S. 1962. Microlites in glassy volcanic rocks. Am. Miner. 47, 723–40.Google Scholar
Ross, C. S. 1964. Volatiles in volcanic glasses and their stability relations. Am. Miner. 49, 258–71.Google Scholar
Ross, C. S. & Smith, R. L. 1955. Water and other volatiles in volcanic glasses. Am. Miner. 40, 1071–89.Google Scholar
Spitzer, W. G. & Ligenza, J. R. 1961. Oxygen exchange between silica and high pressure steam. Physics Chem. Solids 17, 196–202.CrossRefGoogle Scholar
Tilley, C. E. 1957. A note on the pitchstones of Arran. Geol. Mag. 94, 329–33.CrossRefGoogle Scholar
Todd, B. J. 1955. Outgassing of glass. J. appl. Phys. 26, 1238–43.CrossRefGoogle Scholar
Tyrrell, G. W. 1917. Some tertiary dykes of the Clyde area. Geol. Mag. 54, 301–15, 350–6.Google Scholar
Vincent, E. A. 1950. The chemical composition and physical properties of the residual glass of the Kap Daussy tholeiite dyke, East Greenland. Mineralog. Mag. 29, 46–62.Google Scholar