The ammonium content of Caledonian granites
- 1 July 1987
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 144 (4) , 671-674
- https://doi.org/10.1144/gsjgs.144.4.0671
Abstract
The Caledonian granites of the British Isles have NH + 4 contents in the range of 0–167 parts per million. High contents (>60 ppm) are confined to muscovite-rich granites, occurring principally in a restricted area, namely SE Ireland and the Isle of Man. Their magmas are inferred to have formed by the partial melting of a sedimentary protolith rich in organic matter. There is no apparent correlation between NH + 4 content and initial 87 Sr/ 86 Sr ratios.This publication has 16 references indexed in Scilit:
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