Lyell Collection
Journal of the Geological Society
Lyell Centre  |   Lyell Collection  |   Subscriptions   |   Geological Society  |   Email alerts  |   Online bookshop  |   Help

Keywords:
Author:
Advanced search>>
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow Request Permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (8)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by PARNELL, J.
Right arrow Articles by BOYCE, A.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Journal of the Geological Society; 2000; v. 157; issue.3; p. 635-640
© 2000 Geological Society of London

Regular Article

Controls on kaolinite and dickite distribution, Highland Boundary Fault Zone, Scotland and Northern Ireland

JOHN PARNELL1, MARTIN BARON1 & ADRIAN BOYCE2

1 Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK (email: j.parnell{at}abdn.ac.uk)
2 Isotope Geosciences Unit, Scottish Universities Research and Reactor Centre, East Kilbride, Glasgow G75 0QF, UK

Scientific editing by John McArthur.

Kaolinite and dickite occur widely in central Scotland and Northern Ireland. Stable hydrogen and oxygen isotope compositions of both minerals are similar, suggesting that the formation of kaolinite occurred first at temperatures of <50°C from meteoric water, probably as a result of alteration of Lower Carboniferous volcanic rocks, and that dickitization followed locally as a result of local heating that accompanied the intrusion of dykes during Late Carboniferous–Permian times. This mechanism of dickite formation explains why the higher-temperature polytype dickite occurs in a region from the Firth of Clyde to Perthshire, in association with dyke swarms, whilst kaolinite occurs elsewhere. The original kaolinite precipitation was focused along the high permeability fault zone now marked by the Highland Boundary Fault Zone and its presumed trace in Northern Ireland.


Keywords: Scotland, kaolin, kaolinite, dickite, palaeotemperature.




This article has been cited by other articles:


Home page
 Mineral MagHome page
J. Parnell, J. Parnell, G. Watt, H. Chen, H. Wycherley, A. Boyce, D. Elmore, R. Blumstein, M. Engel, and P. Green
Kaolin polytype evidence for a hot-fluid pulse along Caledonian thrusts during rifting of the European Margin
Mineralogical Magazine, 2004; 68: 419 - 432.
[Abstract] [Full Text] [PDF]

Home page
 Geological MagazineHome page
J. Parnell, J. PARNELL, M. BARON, M. DAVIDSON, D. ELMORE, and M. ENGEL
Dolomitic breccia veins as evidence for extension and fluid flow in the Dalradian of Argyll
Geological Magazine, 2000; 137: 447 - 462.
[Abstract] [Full Text] [PDF]