Integrated Geophysical Investigation Prior to Excavation in a Quarry of Milos Island, Greece

A preliminary geophysical investigation takes place in an area near the edge of a bentonite quarry in Milos Island run by S&B company in order to detect subsurface formations affecting mining planning and the stratigraphy in 25m depth for engineering purposes. Measurements with EM method gave the conductivity distribution in two exploration depths (3m and 6m) showing the stratigraphy and possible local features related with “linear” contouring. ERT profiles gave the same in a greater detail in a more narrow area of interest. Georadar profiles have faintly shown some features within the surface conductive layer. Finally, the stratigraphy has been detected and the area of interest with local findings has been outlined.