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Potassium-Argon Age Determinations on Granite from the Island of Mahé in the Seychelles Archipelago

Nature volume 192, pages 11741175 (23 December 1961) | Download Citation

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Abstract

THE Seychelles Archipelago is situated in the Indian Ocean some 1,100 miles to the east of Mombasa. It is made up of nineteen islands and a number of islets of which all but two are granitic in composition. The only two coral islands in the group are Bird and Denis, which lie at a distance of about sixty miles north of Victoria, Mahé. Mahé itself is the largest of the islands, being seventeen miles long and up to seven miles wide. Rugged peaks of granite rise to a height of almost 3,000 ft. above sea-level and show marked erosion features. Praslin, Silhouette and Digue are the other main granitic islands of the group.

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References

  1. 1.

    , “Contribution to the Geology of the Seychelles, especially to the Knowledge of Laterite” (translation by the Commonwealth Bureau of Soil Science, Harpenden, Herts), Neues Jahrbuch Mineralogie Geologie und Palæontologie, 2, 163 (1898).

  2. 2.

    , C.R. Acad. Sci., Paris, (1948).

  3. 3.

    , Nature, 73, 294 (1906).

  4. 4.

    , and , Colonial Geology and Mineral Resources, 5, No. 1, 3 (1955).

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Affiliations

  1. Department of Geodesy and Geophysics, Cambridge.

    • J. A. MILLER
    •  & J. D. MUDIE

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https://doi.org/10.1038/1921174a0

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