Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2025-01-06T01:12:56.308Z Has data issue: false hasContentIssue false
  • English
  • Français

Strontium in plagioclase feldspars from four layered basic masses in Somalia

Published online by Cambridge University Press:  14 March 2018

J. R. Butler  and
W. Skiba
J. R. Butler
Affiliation:
Department of Geology, Imperial College, London S.W. 7
W. Skiba
Affiliation:
Department of Geology, Imperial College, London S.W. 7
Get access Rights & Permissions [Opens in a new window]

Summary

The petrological and structural characteristics of four layered basic masses in Somalia are described. Sr contents of feldspars from three of the masses are similar for comparable An contents; Sr varies between 1000 and 1850 p.p.m. and tends to increase as An decreases from An68 to An48. In feldspars from the other mass Sr also increases with decreasing An content (An74 to An56), but is at a much higher general tenure (1650 to 2350 p.p.m.). It is concluded that the four masses were not all part of the same layered intrusion.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 258 , September 1962 , pp. 213 - 225
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1962

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

Daniels, (J.L.), 1958. Trans. Geol. Soc. South Africa, vol. 61, p. 125.Google Scholar
Emmons, (R. C), 1952. Mem. Geol. Soc. Amer., vol. 52.Google Scholar
Luochesi, (Claude A.), 1957. Anal. Chem., vol. 29, p. 370.CrossRefGoogle Scholar
Nockolds, (S.R.) and Mitchell, (R.L.), 1948. Trans. Roy. Soc. Edinburgh, vol. 61, p. 533.CrossRefGoogle Scholar
Sen, (N.), Nockolds, (S.R.), and Allen, (R.), 1959. Geochimica Acta, vol. 16, p. 58. Skiba, (W.) and Brothers, (R.N.), in press.Google Scholar
Tjrekian, (Karl K.) and Külp (Lawrence J.), 1956. Geochimica Acta, vol. 10, p. 245.CrossRefGoogle Scholar
Wager, (L.R.) and Deer, (W.A.), 1939. Medd. Grrailand, vol. 105, 352 pp.Google Scholar
Wilkinson, (J. F. G.), 1959. Geochimica Acta, vol. 16, p. 123.Google Scholar