“…Investigating the long-term physicochemical behaviour of subsurface CO 2 , together with factors that facilitate CO 2 accumulation and transport at crustal depths, are of great importance as CO 2 , when degassed in large amounts, can trigger seismicity or intensive hydrothermal eruptions (Zoback & Gorelick, 2012;Irwin & Barnes, 1980;Wiprut & Zoback, 2000;Uysal et al, 2009). In addition, enhancing our knowledge on subsurface CO 2 helps to assess the fate of geo-sequestered CO 2 , since natural CO 2 accumulations provide a unique opportunity to examine the crustal evolution of CO 2 and to investigate the geological factors controlling CO 2 -leakage (e.g., Pearce, 2006).…”