The ordovician succession near llanystwmdwy caernarvonshire
- 1 January 1954
- journal article
- research article
- Published by Wiley in Geological Journal
- Vol. 1 (4) , 385-393
- https://doi.org/10.1002/gj.3350010406
Abstract
A section in the River Dwyfach shows the main Snowdon Lavas and Tuffs to be overlain by a series of sediments and tuffs with a Longvillian fauna near the base. These sediments are followed by black graptolitic shales belonging to the Dicranograptus clingani and Pleurograptus linearis zones overlain by Ashgill mudstones with Phillipsinella parabola.Keywords
This publication has 6 references indexed in Scilit:
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