The paleomagnetism of deep sea sediments

Paleomagnetic measurements made on deep sea sediments are described. The main features to be seen in the pattern of NRM directions in the sediment cores are: (1) Very few of the cores show reversals of NRM direction, but the position of the latest reversal in those which have a reversal correlate well in time. (2) There is evidence for a wobble of the earth's main dipole field with a period between 105 and 106 years. The NRM in these sediments is thought to be stable.

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