Abstract
The main features of the Waulsortian (Upper Tournaisian and Lower Vise'an) carbonate mudbank complex of Eire are described and the paleogeography outlined. The distribution and lithological characters of the Waulsortian limestones and associated sediments are briefly described. The Waulsortian rocks comprise a large mudbank complex, together with numerous discontinuous banks which formed in the lagoon on the landward side of the complex. The complex originally extended over an area of about 7,000 square miles in Eire. Thickness variations are shown on an isopach map. The development of the complex was controlled by two (or more) stable structural blocks on the Variscan foreland. These allowed the accumulation of a great thickness of Waulsortian limestone in the Shannon (NW. Co. Limerick and S. Co. Clare) and Cork areas before lateral spreading began. Bank growth took two main forms. These, the knoll and sheet forms, are briefly described and illustrated. The mechanism of growth is less certain. It is sugg...
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