Other
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000gecoa..64..579a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 64, Issue 4, pp.579-585
Other
5
Scientific paper
We have measured the boron isotope composition and boron and chloride concentrations of 27 Icelandic geothermal fluids from both high- and low-temperature systems. The 11 B values range from -6.7 in the Krafla system, to +25.0 in a warm spring from the Southern Lowlands. In addition, we have also determined the 11 B values of basaltic glass from Nesjavellir (-5.3 ± 1.4 ) and travertine from Snaefellsnes (-22 ± 0.5 ). The B isotope and Cl/B systematics of the high-temperature systems are dominated by the composition of the local basalts. The lower temperature systems show evidence for mixing with B and Cl of a marine origin, together with some uptake of B into secondary mineral phases. The data from the Snaefellsnes geothermal system indicate that the fluids have undergone interaction with basalts that have undergone significant low-temperature alteration by seawater.
Aggarwal J. K.
Arnórsson Stefán
Bullen Thomas D.
Palmer Martin R.
Ragnarsdóttir Kristín Vala
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