Isotopic ages of dykes and pegmatitic gneiss from the southern islands of the Outer Hebrides
- 1 May 1970
- journal article
- Published by Geological Society of London in Scottish Journal of Geology
- Vol. 6 (2) , 208-213
- https://doi.org/10.1144/sjg06020208
Abstract
Synopsis: Potassium-argon ages of 1720, 1565, and 1500 m.y. from dykes from South Uist and Benbecula confirm the existence of Laxfordian activity in the southern part of the Outer Hebrides. The pegmatitic gneiss of Ardivachar, South Uist, yields a whole-rock rubidium-strontium isochron age of 2560±80 m.y., closely correlating with the post-Scourie Group pegmatites of the mainland.Keywords
This publication has 7 references indexed in Scilit:
- An apparent age for a member of the Scourie dyke suite in Lewis, Outer HebridesScottish Journal of Geology, 1970
- A tectonic study of part of the Philippine fault zoneQuarterly Journal of the Geological Society, 1967
- Geochronology of the Lewisian Basement Near Lochinver, SutherlandNature, 1965
- Isotopic Ages of Assynt DykesNature, 1964
- The Lewisian complex of South Harris With some observations on the metamorphosed basic intrusions of the Outer Hebrides, ScotlandQuarterly Journal of the Geological Society, 1963
- A GEOCHRONOLOGICAL STUDY OF THE METAMORPHIC COMPLEXES OF THE SCOTTISH HIGHLANDSQuarterly Journal of the Geological Society, 1961
- The pre-Torridonian metamorphic history of the Loch Torridon and Scourie areas in the North-West Highlands, and its bearing on the chronological classification of the LewisianQuarterly Journal of the Geological Society, 1950