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Chlorite clay minerals in Ordovician pumice-tuff and derived soils in Snowdonia, North Wales

Published online by Cambridge University Press:  09 July 2018

D. F. Ball
D. F. Ball*
Affiliation:
The Nature Conservancy, Penrhos Road, Bangor, Caernarvonshire
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Abstract

Calcareous volcanic ashes (pumice–tuffs) occur among Ordovician rocks in Snowdonia, North Wales. The clays of these rocks and of the ecologically important soils derived from them are found to be almost mono-mineralic and to consist of chlorites. Chemical, differential thermal and X-ray analyses are given and discussed with particular reference to a clay-size chlorite from weathered pumice–tuff. There is no evidence for pedogenetic clay mineral transformations in the range of soils studied.

Type
Research Article
Information
Clay Minerals , Volume 6 , Issue 3 , July 1966 , pp. 195 - 209
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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