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Remanent magnetism of dykes and continental drift

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Summary

The possibility of utilising the results of remaeent magnetism of sub-surface bodies, as obtained from the magnetic surveys, for the study of continental drift is presented. As an example, the quartz-magnetite bands occurring at Ongole, Andhra Pradesh, India have been magnetically surveyed. A modified method for the interpretation of magnetic anomalies of infinite dykes has been presented and is used for the interpretation of field profiles. A remanent magnetic vector with an up dip of 26° lying exactly in the present magnetic meridian has been obtained, which yields the ancient latitude of India (Reference Town being Nagpur) to be 9°S of equator at an age of 1400 million years.

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Authors and Affiliations

  1. Department of Geophysics, Andhra University, Waltair, India

    I. V. Radhakrishna Murthy

Authors
  1. B. S. R. Rao
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  2. I. V. Radhakrishna Murthy
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Rao, B.S.R., Murthy, I.V.R. Remanent magnetism of dykes and continental drift. PAGEOPH 68, 124–130 (1967). https://doi.org/10.1007/BF00874890

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  • DOI: https://doi.org/10.1007/BF00874890

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