The thermal springs of Bockfjorden, Svalbard: II: selected aspects of trace element hydrochemistry |
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| Authors: | David Banks Ulrich Siewers Ronald S Sletten Sylvi Haldorsen Barrie Dale Michael Heim Berit Swensen |
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| Affiliation: | a Norges Geologiske Undersøkelse (Geological Survey of Norway), Postboks 3006 Lade, N7002 Trondheim, Norway;b Bundesanstalt für Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources), PO Box 510153 D-30631, Hannover, Germany;c Quaternary Research Center, Box 351360, University of Washington, Seattle, Washington, 98195-1360, USA;d Department of Soil and Water Sciences, Norges Landbrukshøgskole (Agricultural University of Norway), Postboks 5028, N1432 ÅS, Norway;e Department of Geology, University of Oslo, Postboks 1047, Blindern, N0316 Oslo, Norway |
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| Abstract: | Waters from the Trollkjeldene (Troll springs) and Jotunkjeldene (Jotun springs) thermal springs on northern Svalbard have been analysed by ICP-AES, ICP-MS and IC techniques for a wide range of major and trace elements. Although it is plausible that the thermal waters originate from a deep reservoir in siliceous rocks, it appears that a significant component of their hydrochemical signature is derived from dissolution of higher-level Hecla Hoek marbles. Rare earth elements (REEs) show some degree of enrichment of heavy REEs in the water phase, relative to the marbles and to the travertines that precipitate from the waters. A strong positive Eu anomaly is also observed in the waters, suggesting preferential mobilisation of Eu under reducing conditions. The ratio Nb/Ta is rather well-preserved between the marbles, the waters and the travertines. |
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| Keywords: | Permafrost Rare earth elements Thermal springs Hydrochemistry Svalbard Spitsbergen |
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