Review Article

Assessment of Chaves Low-Temperature CO2-Rich Geothermal System (N-Portugal) Using an Interdisciplinary Geosciences Approach

Figure 12

Regional conceptual model of the studied CO2-rich mineral waters, along the Penacova-Verin fracture zone, between Vilarelho da Raia and Pedras Salgadas (N of Portugal). The filled circles stand for the amount of dissolved deep CO2 gas; the lines stand for fault systems; down arrows stand for meteoric waters (recharge); up arrows stand for deep/shallow groundwater ascent, boxes stand for a schematic representation of the CO2-rich aquifer systems. Adapted from [81].