The fluid geochemistry of Icelandic high temperature geothermal areas |
| |
Institution: | 1. Science Institute, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland;2. Bardarvogur 44, 104 Reykjavík, Iceland;3. Matís ohf, Vínlandsleið 12, 113 Reykjavík, Iceland;4. Faculty of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavík, Iceland;1. GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany;2. Nordvulk, Institute of Earth Sciences, University of Iceland, Askja, Sturlugata 7, IS-101 Reykjavík, Iceland;3. Iceland GeoSurvey (ÍSOR), Grensásvegur 9, 108 Reykjavík, Iceland |
| |
Abstract: | 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 Öxarfjörður 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, Námafjall and Theistareykir areas appear to have travelled relatively long distances from the central highlands. The gas observed is magmatic except in the northerly Öxarfjördur area close to the sea where it is apparently derived from organic sediments. |
| |
Keywords: | Geothermal Geochemistry Magmatic Iceland High-temperature Isotopes |
本文献已被 ScienceDirect 等数据库收录! |
|