POTASSIUM–ARGON AGES FROM THE GRAPHITE DEPOSITS AND RELATED ROCKS OF SEATHWAITE, CUMBRIA
- 1 March 1975
- journal article
- Published by Geological Society of London in Proceedings of the Yorkshire Geological and Polytechnic Society
- Vol. 40 (3) , 413-418
- https://doi.org/10.1144/pygs.40.3.413
Abstract
Summary: Potassium–argon ages are reported from the Seathwaite graphite mine, Borrowdale, Cumbria. The age of cooling of the Steel Fell Diabase which contains the graphite veins is 382 Ma, while mineral ages of chlorite and illite from wallrock and vein matrix suggest an age of 376 Ma for the emplacement of the graphite. The late Caledonian age of the vein could temporally relate it to the similarly-trending copper-bearing veins of the Vale of Newlands.This publication has 8 references indexed in Scilit:
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