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 Kent, R. W.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Journal of the Geological Society; 1995; v. 152; issue.6; p. 979-983;
DOI: 10.1144/GSL.JGS.1995.152.01.17
© 1995 Geological Society of London

Papers

Magnesian basalts from the Hebrides, Scotland: chemical composition and relationship to the Iceland plume

Ray W. Kent1,2

1 Department of Geology & Geophysics, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, UK
2 Department of Geology, University of Leicester, Leicester LE1 7RH, UK

The Hebridean Tertiary igneous province lay 700–900 km south of a presumed plume centre, and >500 km landward of a rifted continental margin prior to opening of the northeast Atlantic. The Province includes a small number of magnesian basalts containing olivine phenocrysts with core compositions equal to, or in excess of, Fo89. Olivine-liquid equilibrium calculations suggest that these phenocrysts formed from liquids with MgO contents of 14–15 wt%, and in rare instances, 18–20 wt%. The liquidus temperatures of these magmas imply mantle potential temperatures of 1350–1460°C at distances up to 900 km from the axis of the Iceland plume. Their emplacement at c. 60 Ma implies either a long-established hotspot, or active channeling of plume material along the base of the plate towards a region undergoing considerable lower crustal extension.


Keywords: Hebrides, basalt, olivine, temperature, plumes.




This article has been cited by other articles:


Home page
 GeologyHome page
C. J. Parkin, Z. C. Lunnon, R. S. White, P. A.F. Christie, and Integrated Seismic Imaging & Modelling of Margins
Imaging the pulsing Iceland mantle plume through the Eocene
Geology, 2007; 35: 93 - 96.
[Abstract] [Full Text] [PDF]

Home page
 Geological MagazineHome page
B. G. J. Upton, B. G. J. UPTON, A. C. SKOVGAARD, J. McCLURG, L. KIRSTEIN, M. CHEADLE, C. H. EMELEUS, W. J. WADSWORTH, and A. E. FALLICK
Picritic magmas and the Rum ultramafic complex, Scotland
Geological Magazine, 2002; 139: 437 - 452.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
R. W. KENT and J. G. FITTON
Mantle Sources and Melting Dynamics in the British Palaeogene Igneous Province
J. Petrology, 2000; 41: 1023 - 1040.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
J. H. SCARROW, J. M. CURRAN, and A. C. KERR
Major Element Records of Variable Plume Involvement in the North Atlantic Province Tertiary Flood Basalts
J. Petrology, 2000; 41: 1155 - 1176.
[Abstract] [Full Text] [PDF]

Home page
 Can MineralHome page
D. J. Mossman, D. S. Coombs, Y. Kawachi, and A. Reay
HIGH-Mg ARC-ANKARAMITIC DIKES, GREENHILLS COMPLEX, SOUTHLAND, NEW ZEALAND
Can Mineral, 2000; 38: 191 - 216.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. C. Kerr, R. W. Kent, B. A. Thomson, J. K. Seedhouse, and C. H. Donaldson
Geochemical Evolution of the Tertiary Mull Volcano, Western Scotland
J. Petrology, 1999; 40: 873 - 908.
[Abstract] [Full Text] [PDF]

Home page
 Petroleum Geology Conference seriesHome page
J. D. RITCHIE, R. W. GATLIFF, and P. C. RICHARDS
Early Tertiary magmatism in the offshore NW UK margin and surrounds
Geological Society, London, Petroleum Geology Conference series, 1999; 5: 573 - 584.
[Abstract] [PDF]

Home page
 Geological Society, London, Special PublicationsHome page
Y. Battiau-Queney
Crustal anisotropy and differential uplift: their role in long-term landform development
Geological Society, London, Special Publications, 1999; 162: 65 - 74.
[Abstract] [PDF]

Home page
 Journal of the Geological SocietyHome page
A. SOESOO
Episodic magmatism and diverse plutonic products within the Thverartindur central volcanic complex at the former Icelandic plate margin
Journal of the Geological Society, 1998; 155: 801 - 811.
[Abstract] [PDF]

Home page
 Journal of the Geological SocietyHome page
B. R. BELL and D. W. JOLLEY
Application of palynological data to the chronology of the Palaeogene lava fields of the British Province: implications for magmatic stratigraphy
Journal of the Geological Society, 1997; 154: 701 - 708.
[Abstract] [PDF]

Home page
 Journal of the Geological SocietyHome page
A. C. Morton, K. Hitchen, J. D. Ritchie, N. M. Hine, M. Whitehouse, and S. G. Carter
Late Cretaceous basalts from Rosemary Bank, Northern Rockall Trough
Journal of the Geological Society, 1995; 152: 947 - 952.
[Abstract] [PDF]

Home page
 Journal of the Geological SocietyHome page
A. C. Kerr
The melting processes and composition of the North Atlantic (Iceland) plume: geochemical evidence from the Early Tertiary basalts
Journal of the Geological Society, 1995; 152: 975 - 978.
[Abstract] [PDF]

Home page
 Journal of the Geological SocietyHome page
J. G. Fitton, A. D. Saunders, L. M. Larsen, M. S. Fram, A. Demant, C. Sinton, and T. Party
Magma sources and plumbing systems during break-up of the SE Greenland margin: preliminary results from ODP Leg 152
Journal of the Geological Society, 1995; 152: 985 - 990.
[Abstract] [PDF]