AGE OF THE PRINCIPAL INTRUSIONS OF THE LAKE DISTRICT
- 1 March 1964
- journal article
- Published by Geological Society of London in Proceedings of the Yorkshire Geological and Polytechnic Society
- Vol. 34 (3) , 331-342
- https://doi.org/10.1144/pygs.34.3.331
Abstract
Summary: Mean values of available radiometric age determinations on micas from the Skiddaw, Shap and Eskdale granites are 399, 393 and 383 million years respectively. The possible significance of these ages is discussed with respect to the geological setting of the intrusions. Whole rock potassium-argon age determinations on the Ennerdale Granophyre and the Carrock Fell gabbro-granophyre complex show that there has been loss of argon but are indicative of a Caledonian age.This publication has 19 references indexed in Scilit:
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