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Age of the Eycott Volcanic Group and its conformable relationship to the Skiddaw Slates in the English Lake District

Published online by Cambridge University Press:  01 May 2009

C. Downie  and
N. J. Soper
C. Downie
Affiliation:
Department of Geology, University of Sheffield, Mappin Street, St George's Square, Sheffield, S1 3JD
N. J. Soper
Affiliation:
Department of Geology, University of Sheffield, Mappin Street, St George's Square, Sheffield, S1 3JD
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Summary

An earliest Llanvirn age is established on micropalaeontological grounds for the interbedded lava–pelite sequence at the base of the Binsey Volcanic Formation in the northern Lake District. The northern volcanic sequence, here termed the Eycott Volcanic Group, is earlier than, and chemically distinct from, the main Borrowdale Volcanic Group. The evidence precludes a regional unconformity between the Skiddaw Slates and the overlying volcanic rocks, but is compatible with the hypothesis that the vulcanicity occurred in an island arc environment.

Type
Articles
Information
Geological Magazine , Volume 109 , Issue 3 , May 1972 , pp. 259 - 268
Copyright
Copyright © Cambridge University Press 1972

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