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XIV.—The Tertiary Dolerite Plugs of North-East Ireland—A Survey of their Geology and Geochemistry*

Published online by Cambridge University Press:  06 July 2012

E. M. Patterson  and
D. J. Swaine
E. M. Patterson
Affiliation:
West Kilbride, Ayrshire
D. J. Swaine
Affiliation:
Department of Spectro-chemistry, The Macaulay Institute for Soil Research, Aberdeen.
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Synopsis

A Summary is given of the field relations, geographical distribution and petrography of twenty-nine dolerite plugs associated with the Tertiary lava plateau of north-east Ireland. All but two of the plugs are composed of olivine dolerite. The exceptions are a pyroxene-rich dolerite and a tholeiitic type containing abundant chlorophæite. Trace-element determinations have been made on specimens from thirteen of the plugs.

Slight but definite chemical differences are shown to exist between the olivine-dolerites and the average Tertiary olivine-basalt lava of the area. The petrogenetic relationships of the two are briefly considered.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 63 , Issue 2 , 1958 , pp. 317 - 331
Copyright
Copyright © Royal Society of Edinburgh 1958

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