Pumpellyite-bearing basic igneous rocks from the Lower Ordovician of North Pembrokeshire, Wales
- 1 March 1978
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 42 (321) , 81-83
- https://doi.org/10.1180/minmag.1978.042.321.10
Abstract
Summary: The first occurrence of pumpellyite in the Lower Ordovician volcanic rocks of North Pembrokeshire is reported and its form and chemistry are described. The significance of pumpellyite in relation to the grade of metamorphism attained during the Caledonian orogenic episode is discussed.Keywords
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