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Dedolomitization of Lower Carboniferous Dolostone in the Wirksworth area, Derbyshire, England

Published online by Cambridge University Press:  01 May 2009

D. Munn  and
D. E. Jackson
D. Munn
Affiliation:
Department of Earth Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, U.K.
D. E. Jackson
Affiliation:
Department of Earth Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, U.K.
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Summary

Lower Carboniferous secondary dolostones are shown to be affected by dedolomitization. The crystals of dolomite most affected are those occurring around calcite-filled rhombohedral pores within the dolostones. Dedolomitization of dolomitized crinoid ossicles also occurs. This is thought to be caused by their greater susceptibility to dedolomitization due to dolomicritization. Dedolomitization and subsequent dissolution, giving an enhanced porosity to the dolostones, are believed to be related to the present-day weathering surface.

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 6 , November 1980 , pp. 607 - 612
Copyright
Copyright © Cambridge University Press 1980

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