| Abstract |
The conditions in the RUW geothermal system are recorded by its surface and subsurface alteration and ground magnetic modeling. In particular, the changes in the hydrology of the reservoir are recorded by the hydrothermal minerals and fluids inclusions. The petrography reveals the sequence of the reservoir changes during the lifetime, albeit incompletely. The magnetic modeling indicates fresh (unaltered) rocks in shallow depths. The major secondary minerals consist of pyrite, calcite, smectite, quartz, titanite, epidote and iron oxides, with minor adularia, albite, wairakite, hematite, prehnite and laumontite. |