Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-20T01:21:33.386Z Has data issue: false hasContentIssue false
  • English
  • Français

Pyroxenes in altered volcanic rocks, Glenrock Station, NSW, Australia

Published online by Cambridge University Press:  05 July 2018

R. Offler
R. Offler*
Affiliation:
Department of Geology, The University of Newcastle, NSW, Australia 2308
Get access Rights & Permissions [Opens in a new window]

Summary

Microprobe analyses of relict pyroxenes in meta-basalts from thrust slices of the Peel fault zone, Glenrock Station, NSW, demonstrate that the majority of these rocks have a tholeiitic affinity. Those of Ordovician to L. Devonian(?) age in the upper thrust slices show a greater Fe-enrichment, and lower wollastonite, Al and Ti contents than their Devonian counterparts in the lowest thrust sheet. The pyroxene data also indicate that some rocks are geochemically transitional between tholeiitic and alkaline magmas. The relict pyroxenes in metadolerites emplaced in the Devonian sequence show that these rocks are transitional to tholeiitic in character and that they appear not to be consanguineous with the metabasalts.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 328 , December 1979 , pp. 497 - 503
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 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

Barberi, (F.), Bizouard, (H.), and Varet, (J.), 1971. Contrib. Mineral. Petrol. 33, 93-107.CrossRefGoogle Scholar
Benson, (W. N.), 1913. Proc. Linnean Soc. New South Wales, 38, 662-724.CrossRefGoogle Scholar
Benson, (W. N.) 1915a Ibid. 40, 121-73.Google Scholar
Benson, (W. N.) 1915b Ibid. 40, 540-624.Google Scholar
Brown, (G. M.), 1957. Mineral. Mag. 31, 511-43.Google Scholar
Coish, (R. A.) and Taylor, (L. A.), 1978. Geol. Soc. Am. Prog. and Abstr., Toronto Meeting, 382.Google Scholar
Coombs, (D. S.), Horodyski, (R. J.), and Naylor, (R.), 1970. Am. J. Sci. 268, 142-56.CrossRefGoogle Scholar
Crook, (K. A. W.), 1961. J. Proc. R. Soc. New South Wales,. 94, 173-88.Google Scholar
Cross, (K. C.), 1974. B.Sc. Hons. Thesis, University of New England.Google Scholar
Evans, (B. W.) and Moore, (J. G.), 1968. Contrib. Mineral. Petrol. 17, 85-115.CrossRefGoogle Scholar
Garcia, (M. O.), 1978. Earth Sci. Rev. 14, 147-65.CrossRefGoogle Scholar
Gibb, (F. G. F.), 1973. J. Petrol. 14, 203-30.CrossRefGoogle Scholar
Herbert, (H. K.), 1978. Geol. Soc, Austr. Convention, Townsville, Queensland, Abst. 39.Google Scholar
Hynes, (A.), 1976. Am. J. Sci. 276, 1208-24.CrossRefGoogle Scholar
Kushiro, (I.), 1960. Ibid. 258, 548 54.Google Scholar
Le Bas, (M. J.), 1962. Ibid. 260, 267-88.Google Scholar
Mevel, (C.) and Velde, (B.), 1976. Earth Planet. Sci. Lett. 32, 158 64.CrossRefGoogle Scholar
Myers, (C. W.), Bence, (A. E.), Papike, (J. J.), and Ayuso, (R. A.), 1975. J. Geophys. Res. 80, 807-22.CrossRefGoogle Scholar
Nakamura, (Y.) and Coombs, (D. S.), 1973. Contrib. Mineral. Petrol. 42, 213-28.CrossRefGoogle Scholar
Offler, (R.), 1978. Geol. Soc. Austr. Convention, Townsville, Queensland, Abst. 40.Google Scholar
Reed, (S. J. B.) and Ware, (N. G.), 1975. J. Petrol. 16, 499-519.CrossRefGoogle Scholar
Vallance, (T. G.), 1969a. J. Geol. Soc. Austr. Spec. Publ. 16, 235-7.Google Scholar
Vallance, (T. G.) 1969b. Geol. Soc. Austr. Spec. Publ. 2, 163-8.Google Scholar
Vallance, (T. G.) 1974. In: Spilites and Spilitic Rocks (Amstutz, (G. C.)ed.) Springer-Verlag, 59 68.Google Scholar
Williams, (A. J.), 1979. Tectonophysics, 58, 81 95.CrossRefGoogle Scholar