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 Full Text (PDF)
Right arrow References
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 Google Scholar
Google Scholar
Right arrow Articles by ZHOU, J.-X.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Journal of the Geological Society; 1988; v. 145; issue.2; p. 225-234;
DOI: 10.1144/gsjgs.145.2.0225
© 1988 Geological Society of London

Article

A gold and silver-bearing subvolcanic centre in the Scottish Caledonides near Lagalochan, Argyllshire

J.-X. ZHOU

Department of Geology, Imperial College of Science and Technology, Prince Consort Road, London SW7 2BP, UK

Field investigation, petrographic studies and lithogeochemical sampling have defined an area of hydrothermal alteration and mineralization associated with a subvolcanic centre of late Caledonian age at Lagalochan near Kilmelford, Argyllshire, Scotland. The igneous rocks of an area of 2.5 km2 comprise a large body of porphyrite, flow-banded dacitic rocks, pyroclastic rocks and several bodies of hydrothermal breccia. The close relationship between pyroclastic masses, dacites and discordant breccia bodies within and peripheral to the porphyrite is indicative of a subvolcanic level of emplacement near a volcanic vent. This subvolcanic zone evidently channelled mineralizing fluids leading to widespread alteration of the rocks and introduction of anomalously high concentrations of silver, copper, molybdenum, zinc, lead, arsenic and gold.




This article has been cited by other articles:


Home page
 Geological Society, London, Special PublicationsHome page
J. A. Plant, P. Stone, and J. R. Mendum
Regional geochemistry, terrane analysis and metallogeny in the British Caledonides
Geological Society, London, Special Publications, 1999; 164: 109 - 125.
[Abstract] [PDF]