Interpretation of magnetic anomalies across the Campbell Plateau, south of New Zealand

D. A. Christoffel

doi:10.1071/EG978143

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

Interpretation of magnetic anomalies across the Campbell Plateau, south of New Zealand
Authors D. A. Christoffel^a
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^a Physics Department, Victoria University of Wellington, , Wellington, , New Zealand
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 9, Issue 3, Sep 1978, p. 143 - 145
DOI: https://doi.org/10.1071/EG978143
- Published online: 01 Sep 1978

Abstract

Magnetic anomalies over the Campbell Plateau show up a linear belt of positive anomalies ex tending for 900 km with an approximate east-west trend. This belt is identified as part of the Stokes Magnetic Anomaly System which extends throughout New Zealand and is associated with rocks of the New Zealand Geosyncline. The system defines a trans-current fault with a dextral displacement of 330 km which can be traced from the SW tip of the Campbell Plateau to the Bounty Trougt’ in the north. Restoration of this Campbell Fault requires the Bounty Trough to be a rift feature, prooably associated with Indian-Pacific plates’ movements during the Miocene or Oligocene. The e<tension of this boundary may have been a subduct ion zone running from the NE tip of the Campbtll Plateau past the North Cape of New Zealand to the Norfolk Ridge, along what is now the southern margin of the South Fiji Basin.

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1978-09-01

2026-01-13

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References

AUSTIN, P.M., SPRIGG, R.C., and BRAITHWAITE, J.C., 1973. Structural development of the Eastern Chatham Rise and of the New Zealand region. Oceanography of the South Pacific, R. Fraser (Comp.h New Zealand Nat. Commission for UNESCO: 201-215
BALLANCE, P.F., 1976. Evolution of the Upper Cenozoic magnetic arc and plate boundary in northern New Zealand. Earth Planet. Sci. Lett. 28:356-370
CHRISTOFFEL, D.A., and FALCONER, R.K.H., 1972. Marine magnetic measurements in the south-west Pacific Ocean and the identification of new tectonic features. Antarctic Res. Series, 19, Antarctic Oceanology tl - The Australian-New Zealand Sector: 197-209
DAVEY, F.J., 1974. Magnetic anomalies off the west coast of Northland, New Zealand, J. Roy, Soc. NZ4: 203-216
DAVEY, F.J., and CHRISTOFFEL, D.A., in press. Magnetic anomalies across Campbell Plateau, New Zealand. Earth Planet. Sci. Lett.
FALCONER, R.K.H., 1974. Geophysical studies in the Southwest Pacific. Ph.D. Thesis, Victoria Univ. Wellington, unpubl.
GRINDLEY, G.W., ADAMS, C.J.D., LUMB, J.T., and WATTERS, W.A., 1977. Palaeomagnetism, K-Ar dating and tectonic interpretation of Upper Cretaceous and Cenozoic volcanic rocks of the Chatham Islands, New Zealand. NZ J. Geol. Geophys, 20: 425-467
hatherton, T., 1975. Stokes Magnetic Anomaly – magnetic system or magnetic supergroup? NZ J. Geol. Geophys. 18: 519
WELLMAN, H.W., 1964. Age of Alpine Fault, New Zealand. In Rock Deformation and Tectonics: Proc. Sect. IV. Rep. 22nd Session Int. Geol. Cong. India: 148-162
WELLMAN, H.W., 1973. The Stokes Magnetic Anomaly. Geol. Mag. 110:419

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Article Type: Research Article

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Interpretation of magnetic anomalies across the Campbell Plateau, south of New Zealand

Abstract

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