Structural geology indicates that Acoculco might be suitable for EGS development
In the area around Acoculco, the collection of structural and kinematic data was dedicated to identify the main tectonic structures affecting the geothermal site. Two main trends were identified with NNW-SSE and SW-NE oriented structures, thus in agreement with the regional knowledge. The boreholes eventually considered for EGS development are located in an area affected by a SW-NE trending structure. This previously unknown information is of capital interest when the stress field of the area will be evaluated, in connection with the results from geophysics and modelling. Further studies will investigate the possibilities to connect the boreholes to the existing structures.
Additionally, images acquired by a drone were utilized to have a detailed view of key-outcrops, in order to have a meaningful database for an evaluation of the distribution of fractures, influencing permeability.Figure 3: Structural geological measurements (left) and mapping of key-outcrops with a drone (right).