Hidrojeoloji.Net

The interaction between the circulating thermal fluids and rocks results in water-rock reactions that produce assemblages of secondary (hydrothermal) minerals that are often used as a guide to present or past subsurface temperatures and fluid type. Permeability and porosity of the host rock strongly influence the water-to-rock volumetric ratio and the degree to which the original minerals are altered. The suit of secondary minerals is less controlled by rock type than by temperature and composition of the fluids (Browne, 1978). Read more…

Read more…

Geothermal power generation creates a much lower emission of greenhouse gases than most other technologies. In any comparison it is important to consider the entire production cycle is considered, i.e. all phases before, during and after power plant operation. Geothermal power plants have particularly low CO₂ emissions compared to other technologies; when CO₂ abatement is concerned, they are therefore more attractive options for power generation than coal, oil or gas sources (Figure 1). Read more…