期刊
APPLIED GEOCHEMISTRY
卷 66, 期 -, 页码 14-64出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apgeochem.2015.10.008
关键词
Geothermal; Geochemistry; Magmatic; Iceland; High-temperature; Isotopes
资金
- HS Orka
- Landsvirkjun
- Orkustofnun (National Energy Authority)
Icelandic high temperature geothermal systems are considered to number thirty three, thereof three are submarine and seven subglacial. All are briefly described but the chemistry of fluids from twenty four of them is considered. The fluid in the three submarine areas and those four on land that are closest to the sea are relatively saline but to a differing extent mixed with groundwater. The rest contain dilute fluids. The fluids of the central highland systems are mostly locally derived but may in some instances be quite old whereas those in the northerly Krafla area which is inland and the Oxarfjordur area which is close to the sea appear to be a mixture of local and central highland water, but those in the inland Hengill, Geysir, Namafjall and Theistareykir areas appear to have travelled relatively long distances from the central highlands. The gas observed is magmatic except in the northerly Oxarfjordur area close to the sea where it is apparently derived from organic sediments. (C) 2015 Elsevier Ltd. All rights reserved.
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