Geochemical evolution of the Ivigtut granite, South Greenland: a fluorine-rich "A-type" intrusion

Goodenough, K.M., Upton, B.G.J. and Ellam, R.M. (2000) Geochemical evolution of the Ivigtut granite, South Greenland: a fluorine-rich "A-type" intrusion. Lithos, 51(3), pp. 205-221. (doi: 10.1016/S0024-4937(99)00064-X)

Abstract

The Ivigtut alkali granite stock lies within the Proterozoic Gardar alkaline igneous province of South Greenland. This small (300 m across) granite body once contained the world's largest body of cryolite, now mined out. The granite surrounding the cryolite body has been extensively metasomatised by F- and CO2- rich fluids, leading to zonal enrichment in HFSE and REE. Variations in the Rb-Sr and Sm-Nd systematics of the granite can be correlated with the degree of metasomatism. Unaltered granites have highly variable initial Sr-87/Sr-86, and initial epsilon(Nd) ratios of around -3, suggesting formation through crustal contamination of a mantle-derived magma. Metasomatised granites show higher initial epsilon(Nd) ratios, which can be interpreted to suggest that the metasomatic fluid was derived from a mantle source.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Ellam, Professor Rob
• Authors: Goodenough, K.M., Upton, B.G.J., and Ellam, R.M.
• Subjects: Q Science > QE Geology
• College/School: College of Science and Engineering > Scottish Universities Environmental Research Centre
• Journal Name: Lithos
• Publisher: Elsevier BV
• ISSN: 0024-4937
• ISSN (Online): 1872-6143