Abstract
IN a recent study of the natural remanent magnetization of the Upper Lias Sands of the West of England, seventeen samples collected from two sites were found to have reverse directions of magnetization. Samples a little higher and lower in the succession were found to be normally magnetized. Numerical details of the results and reasons for considering the rocks in question to possess a stable magnetization will be given separately.
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GIRDLER, R. Possible Reversals of the Earth's Magnetic Field in the Jurassic Period. Nature 184, 540–541 (1959). https://doi.org/10.1038/184540b0
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DOI: https://doi.org/10.1038/184540b0
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