| Title | Geophysical Reconnaissance Study of the Hengill High-Temperature Geothermal Area, SW-Iceland |
|---|---|
| Authors | Bjornsson, Axel; Hersir, Gylfi P. |
| Year | 1981 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; Iceland; Hengill; Geophysical Survey; Volcanics; Electrical Conductivity; Magnetic Survey; Magnetotelluric; Gravity; Anomalies; High Temperature; Resistivity; Seismic |
| Abstract | The active central volcano Hengill, within the Neo-volcanic zone in SW-Iceland, is intersected by a major NE-SW trending fissure swarm. There is an abundance of hot springs and fumaroles within a high temperature geothermal area, which is characterized by a low resistivity anomaly some 120 km in areal extent. The central hottest part is about 50 km and is indicate by a resistivity high at depth. An aeromagnetic map shows negative anomalies, caused by hydrothermal alteration. The best geothermal prospects are presumably within the fissure swarm outside the central region. |