THE USE OF ANISOTROPY OF MAGNETIC SUSCEPTIBILITY IN THE ESTIMATION OF SEDIMENTARY FABRIC1

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Abstract
SUMMARY: The feasibility is discussed of using anisotropy of magnetic susceptibility to find preferred directions of grain orientation and current directions in sediments, and it is concluded that it should be possible to find these directions in silts and sands containing between 0.01 and 1% of magnetite.Some examples are given of the use of the method under controlled conditions, and it is shown to give the same result as optical grain orientation determination in one example and to predict the same current direction as macroscopic indications in two others. Some of the limitations of the method are suggested by examples in which the results would have been misleading if accepted unconditionally.