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

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Abstract
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.