LXXVIII. Remanent magnetism of some dolerites, basalts and volcanic tuffs from tasmania

Abstract
Magnetic measurements have been made on A number of samples of Tasmanian dolerites, basalts, and tuffs, varying in age from the Triassic to the early Tertiary, which were obtained by diamond drill coring. The magnetic dips of all these rocks were found to be very considerably greater than the present dip in Tasmania, and this result is believed to furnish strong evidence t0 support the hypothesis that a relative movement has occurred between the land maw of Tasmania and the geographical poles since the early part of the Tertiary period. Magnetic reversals were found to occur over certain ranges of depth in both the dolerites and the tL8s. The possible implications of these reversals are discussed in detail.

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