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 TREAGUS, J. E.
Right arrow Articles by CURTIS, S. F.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Journal of the Geological Society; 1999; v. 156; issue.3; p. 591-604;
DOI: 10.1144/gsjgs.156.3.0591
© 1999 Geological Society of London

Article

Movement and mineralization in the Tyndrum Fault Zone, Scotland and its regional significance

J. E. TREAGUS1, R. A. D. PATTRICK1 & S. F. CURTIS2

1 Department of Earth Sciences, Manchester University, Manchester M13 9PL, UK
2 Dames & Moore, Excelviorlaan 19, B-1930 Zarentum, Belgium

Major and minor fracture analysis of the Tyndrum Fault Zone, Scotland, reveals a late Silurian history of transtensional deformation with opening across the zone as well as left-lateral strike-slip movements. The extensional phases are characterized by hydrothermal quartz veins and breccias associated with the early stages of precious-metal mineralization. The strike-slip movements are characterized by cataclastic textures and are associated with the later stages of the precious-metal mineralization. Further transtensional deformation in the Carboniferous is indicated by right-lateral strike-slip movements, associated with fractures throughout the zone containing both cataclastic and extensional hydrothermal quartz veins: the quartz veins are associated with base-metal mineralization. The pre-Devonian, WSW–ENE-directed, transtensional deformation of the zone is extrapolated to the whole Dalradian Terrane, the driving force being the gravitational collapse of the orogenic welt parallel to the tectonic trend. The necessary area increase is signified by the intrusion of the end-Caledonian granitic magmas and quartz-veins. The Carboniferous right-lateral movements resulting from N-S extension are related to similar movements, also transtensional, on the Great Glen Fault Zone and in the Midland Valley; the associated mineralization is related to a broader Dinantian base-metal mineralizing event.

Key Words: Caledonian • Orogeny • Carboniferous • faulting • mineralization • transtension




This article has been cited by other articles:


Home page
 Exploration and Mining GeologyHome page
I.M. Platten and S.C. Dominy
Fine-grained Quartz Formed by the Sedimentation of Hydrothermal Precipitates in Mineral Veins: An Example from Tyndrum, Scotland, UK
Exploration and Mining Geology, 2007; 16: 37 - 66.
[Abstract] [Full Text] [PDF]

Home page
 Journal of the Geological SocietyHome page
A. A. Monaghan and R.R. Parrish
Geochronology of Carboniferous-Permian magmatism in the Midland Valley of Scotland: implications for regional tectonomagmatic evolution and the numerical time scale
Journal of the Geological Society, 2006; 163: 15 - 28.
[Abstract] [Full Text] [PDF]

Home page
 Journal of the Geological SocietyHome page
C. M. Rice, C. M. RICE, N. H. TREWIN, and L. I. ANDERSON
Geological setting of the Early Devonian Rhynie cherts, Aberdeenshire, Scotland: an early terrestrial hot spring system
Journal of the Geological Society, 2002; 159: 203 - 214.
[Abstract] [Full Text] [PDF]

Home page
 Economic GeologyHome page
J. Parnell, J. Parnell, G. Earls, J. J. Wilkinson, D. H. W. Hutton, A. J. Boyce, A. E. Fallick, R. M. Ellam, S. A. Gleeson, N. R. Moles, et al.
Regional Fluid Flow and Gold Mineralization in the Dalradian of the Sperrin Mountains, Northern Ireland
Economic Geology, 2000; 95: 1389 - 1416.
[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]