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X-ray Examination of some Clays from the London Platform

  • R. W. Tank (a1)


X-ray analyses of Kimmeridgian clays recovered from the Warlingham Number 1 Borehole indicate that illite and kaolinite are the dominant clay minerals present. Illite, chlorite, and kaolinite, are present in the Devonian clays recovered from the Willesden Number 1 Borehole. The relationships between the clay minerals of the Kimmeridgian and Devonian clays and the clay mineral assemblage of the English Wealden is discussed.



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Allen, P., 1954. Geology and geography of the London-North Sea Uplands in Wealden times. Geol. Mag., 91, 498508.
Butterworth, B., and Honeyborne, D. B., 1952. Bricks and clays of the Hastings Beds. Trans. Brit. Ceramic Soc., 51, 211259.
Droste, J. B., 1956. Alteration of clay minerals by weathering in Wisconsin tills. Bull. geol. Soc. Amer., 67, 911–18.
Tank, R. W., 1962. Clay mineralogy of selected clays from the English Wealden. Geol. Mag., 99, 128136.


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