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The Coral Rag of Upware
Published online by Cambridge University Press: 01 May 2009
Abstract
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- Copyright © Cambridge University Press 1878
References
1 It may be necessary here to remind the readers of the Geol. Mag. that the Corallian of England admits of four primary subdivisions, as follows in descending order: 1. Supracoralline, or equivalents of the Upper Calcareous Grit; 2. Coral Rag, or zone of Cidarias florigemma; 3. Coralline Oolite, or zone of Am.plicatilis; 4. Lower Calcareous Grit, or zone of Am. perarmatus.