Evolution and origin of geothermal waters in (O)xarfj(o)r(6)ur, NE Iceland

摘要：

The geothermal waters of (O)xarfj(o)rdur NE Iceland have a complicated origin. They derive from effluent water from the high-temperature geothermal fields within the fissure swarms to the south, excessive groundwater flow from the mountain ranges and offshore seawater inflow into the fissure swarms. Studies of stable isotopes indicate that their origin is partly Pre-Holocene, which is supported by chemical properties. The warmest saline waters with geothermal reservoir temperatures of about 150 ℃ show significant oxygen shift and geochemical changes due to intensive water-rock interaction. The less saline geothermal waters may originate by mixing of geothermal effluent water from the fissure swarms, fresh groundwater and a small component of Pre-Holocene water.

作者: H.Kristmannsdóttir (A).E.Sveinbj(p)rnsdóttir Jan Heinemeier

作者单位: University of Akureyri, Borgir, Akureyri, Iceland Institute of Earth Sciences, University of Iceland, Reykjavík, Iceland AMS 14C dating Centre, Department of Physics and Astronomy, University of Aarhus, DK, Denmark

会议类型: 国际会议

会议名称: 第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)

会议地点: 昆明

会议语种:英文

页码: 223-227

在线出版日期: 2007-07-31（万方平台首次上网日期，不代表论文的发表时间）