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Silurian volcanism in the central Welsh Borderland

Published online by Cambridge University Press:  01 May 2009

R. W. Sanderson  and
R. Cave
R. W. Sanderson
Affiliation:
Institute of Geological Sciences, Exhibition Road, London SW7 2DE
R. Cave
Affiliation:
Institute of Geological Sciences, Exhibition Road, London SW7 2DE
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Summary

This study of Silurian volcanism considers three small intrusions near Bishop's Castle, Salop, as possible volcanic feeders. Acid magma intrusive into Silurian calcareous siltstones has resulted in microgranite dykes, hornsfelsed country rock and metasomatized breccia. The intrusions are of late Wenlock age or younger, but they are relatable to other Wenlock igneous rocks in the area, and are in contrast to nearby Carboniferous basaltic rocks.

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 5 , September 1980 , pp. 455 - 462
Copyright
Copyright © Cambridge University Press 1980

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