Abstract
POTASSIUM–ARGON age determinations have been made on specimens of granites and gabbros representative of the ‘younger’ Caledonian plutonic intrusions of north-east Scotland. Unlike the ‘older’ igneous rocks these ‘younger’ intrusions post-date the earlier fold movements and acme of regional metamorphism in the Dalradian schists1. The exact relation of the gabbro intrusions to the established sequence of movements and metamorphisms in the Dalradian rocks has received considerable attention2–6. It is evident that their emplacement post-dated the large recumbent (F1) fold structures of north-east Scotland (Banff Nappe), the second phase (F2) structures and the static (post-F2) climax of regional metamorphism; also the evidence strongly favours deformation of the gabbros by the Boyndie–Buchan group of folds (F3) and is suggestive of their intrusion as a single large sheet2.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Read, H. H., and MacGregor, A. G., British Regional Geology: The Grampian Highlands (H.M.S.O., 1948).
Shackleton, R. M., Geol. Mag., 85, 358 (1948).
Read, H. H., and Farquhar, O. C., Quart. J. Geol. Soc. Lond., 107, 423 (1952).
Blundell, D. J., and Read, H. H., Proc. Geol. Assoc., 69, 191 (1958).
Stewart, F. H., and Johnson, M. R. W., Trans. Edin. Geol. Soc., 18, 104 (1960).
Johnson, M. R. W., Geol. Mijnbouw, 42, 121 (1963).
Johnson, M. R. W., and Harris, A. L., Scot. J. Geol., 1, 217 (1965).
Whittington, H. B., and Williams, A., Quart. J. Geol. Soc. Lond., 120S, 241 (1964).
Dewey, J. F., Geol. Mag., 98, 399 (1961).
Cobbing, E. J., Manning, P. I., and Griffith, A. E., Nature, 206, 1132 (1965).
Bisset, C. B., Trans. Edin. Geol. Soc., 13, 72 (1932).
Brown, P. E., York, D., Soper, N. J., Miller, J. A., Macintyre, R. M., and Farrar, E., Scot. J. Geol., 1, 144 (1965).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
BROWN, P., MILLER, J., GRASTY, R. et al. Potassium–Argon Ages of some Aberdeenshire Granites and Gabbros. Nature 207, 1287–1288 (1965). https://doi.org/10.1038/2071287a0
Issue Date:
DOI: https://doi.org/10.1038/2071287a0
This article is cited by
-
Great Glen Fault and Timing of Granite Intrusion on the Proto-Atlantic Continental Margins
Nature Physical Science (1973)
-
Systematic Errors in the Palaeomagnetic Inclination of Sedimentary Rocks?
Nature (1967)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
