Figure F32. Demagnetization results from two diabase intervals illustrating the difficulty of isolating stable remanence directions in this lithology. In some intervals, a high-stability reversed polarity component is (A) readily identified in the discrete sample but (B) cannot be isolated from the corresponding point in the archive half. In other intervals, a high-stability reversed component is isolated in both (C) discrete sample and (D) archive-half data, but this only represents a small fraction of the natural remanent magnetization (NRM). Open circles = projections of the remanence onto the north-south vertical plane, solid circles = projections of the remanence onto the horizontal plane.
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