The general approach that is followed for exploration purposes is to rst analyze available geological information (such as geological maps, drill records, and surface features) to identify environments likely to possess a resource. Key questions that are considered are whether there is evidence that hot geothermal uids have been active in the region within the last million years or so and, if so, what are their characteristics? If uids have been active, is there evidence that the uids are hot enough to support power generation or some other application?