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Woodward & Hochstein 1970

Woodward, D.J. and Hochstein, M.P. (1970). Magnetic measurements in the Cook Islands, south-west Pacific Ocean. New Zealand Journal of Geology and Geophysics 13(1): 207-224.

Total magnetic force measurements around several of the Cook Islands have shown that the anomaly patterns of the islands in the Southern Cook Group which lie on a suboceanic ridge are not related to topography and must arise in part from sources beneath the ridge. Bipolar anomalies in the vicinity of the isolated islands of Rarotonga (Southern Cook Group) and Manihiki (Northern Cook Group) can be explained by a more or less homogeneous magnetisation of these extinct volcanoes. Latitudes of virtual paleomagnetic poles obtained from inferred directions of magnetisation are about 73 degrees S for Rarotonga and about 13 degrees S for Manihiki, indicating a relatively short volcanic history for Rarotonga but a pre-Cretaceous age for Manihiki.

BACKGROUND DATA FILES

	Abstract
	Abstract

	Table 1
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	Table 2
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	Magnetic Measurements

Keywords
anomaly patterns; Cook Islands; geophysical methods; geophysical, surveys; magnetic; magnetic methods; Oceania; Pacific region;, Polynesia; surveys, 20, Applied geophysics

Journal
New Zealand Journal of Geology and Geophysics
http://www.rsnz.org/publish/nzjgg/

Publisher
The Royal Society of New Zealand