Introduction to the Magnetic Properties of New England Granitoids

S. S. Webster; E. Scheibner

doi:10.1071/EG984067

ISSN: 0812-3985
E-ISSN: 1834-7533

Introduction to the Magnetic Properties of New England Granitoids
Authors S. S. Webster^a and E. Scheibner^a
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^a Geological Survey of NSW, GPO Box 5288, Sydney, , NSW, 2001
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 15, Issue 2, Jun 1984, p. 67 - 73
DOI: https://doi.org/10.1071/EG984067
- Published online: 01 Jun 1984

Abstract

The l-type and S-type granitoids of New England, NSW, generally equate to the magnetite-series and ilmenite-series classification. The only non-conforming suite is the Uralla l-type suite which is non-magnetic, but these granitoids also exhibit several abnormal geochemical parameters. The Triassic leuco-adamellites are also non-magnetic, but exhibit magnetic aureoles. Limited remanence measurements are available. Samples of two late-Triassic plutons show strong remanence, indicating allowance will have to be made for such effects in quantitative analysis of magnetic data.

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1984-06-01

2026-01-23

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References

Chappell, G. W. & White, A. J. R. (1974), ‘Two contrasting granite types’, Pacific Geol. 8, 173-4.
Collins, W. J., Beams, S. D., White, A. J. R. & Chappell, B. W. (1981), ‘Nature and origin of A-type granites with particular reference to southeastern Australia’, Contrib. Mineral. Petrol. 80, 189-200.
Hensel, H. D., Chappell, B. W., Compston, W. & McCulloch, M. T. (1982), ‘A neodynium and strontium isotopic investigation of granitoids and possible source rocks from New England, Eastern Australia’, Voisey Symposium – New England Geology, pp. 193-200.
Ishihara, S. (1977), ‘The magnetite-series and ilmenite-series granitic rocks’. Mining Geol. 27, 293-305.
McKenzie, B. (1983), Magnetic interpretation of the Hastings 1:250 000 sheet. NSW Geological Survey unpubl. report GS 1983/140.
Scheibner, E. & Webster, S. S. (1983), ‘Geophysical and LANDSAT investigations in the southern part of the New England Fold Belt – Preliminary Report’, Voisey Symposium – New England Geology, pp. 17-24.
Scheibner, E., Webster, S. S., Green, A. (1983), Interpretations of combined aeromagnetic and LANDSAT data in the New England region. NSW Geological Survey unpubl. report GS1983/197.
Shaw, S. E. & Flood, R. H. (1981), ‘The New England Batholith, eastern Australia: Geochemical variations in time and space’, Geophys. Res. 86, 10530-44.
Webster, S. S. (1984), ‘A magnetic signature for tin deposits in southeastern Australia’, Explor. Geophys. 15, 15-31.
Schiebner, E. (1976), Explanatory notes on the Tectonic map of New South Wales. NSW Geological Survey Publication.

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Article Type: Research Article

Keyword(s): l-type granitoid; magnetic properties; New England; S-type granitoid

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Introduction to the Magnetic Properties of New England Granitoids

Abstract

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