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Precambrian rocks in the Channel Islands

By
G. M. Power
G. M. Power
1Department of Geology, University of Portsmouth POl 3QL, UK
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W. Gibbons
W. Gibbons
2Department of Geology, University of Wales, Cardiff CF1 1XL, UK
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Published:
January 01, 1994

Abstract

The Channel Islands provide some of the best coastal exposures of calcalkaline plutonic rocks in the British Isles. Many of these plutons, and all of the metamorphic basement they intrude, are now known to be of Precambrian age. By contrast, in Jersey, volcanic rocks and some of the plutons have yielded Lower Palaeozoic isotopic ages. Although these relatively young dates may indeed record continuing igneous activity into Ordovician times, some of them at least could prove to be reset ages. Rocks of unquestioned Phanerozoic age are confined to a cover sequence of (probably Cambrian) red sandstones and conglomerates seen on Alderney and Jersey, and several suites of dykes.

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Contents

Geological Society, London, Special Reports

A revised correlation of Pre-Cambrian rocks in the British Isles

W. Gibbons
W. Gibbons
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A. L. Harris
A. L. Harris
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Geological Society of London
Volume
22
ISBN electronic:
9781786202857
Publication date:
January 01, 1994

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