Geothermal Drilling Activity in the Akropotamos Area (Macedonia, Northern Greece)

Abstract

The Akropotamos area constitutes a new geothermal field located in the eastern coastal zone of the Strymonikos Gulf in Macedonia (Northern Greece)

Index-Based Groundwater Quality Assessment of Nestos River Deltaic Aquifer System, Northeastern Greece

“…Analysis of the results (Tables 11 and 12, Figures 7-10) and their spatial distribution clearly suggest that the controlling factors of groundwater quality are As and Mn, which show a slight variability between the wet and the dry sampling periods and between the confined system and the unconfined aquifer. In both aquifers, the most degraded quality characteristics appear around the villages of Chrisochori and, secondarily, Chrisoupoli, which coincides well with the documented geothermal field of Nestos basin [38]. Hence, the elevated concentrations of these parameters may well be linked to the geological structure and the low enthalpy fields documented, as suggested in several cases of such fields across the world [39][40][41].…”

Geochemical Characteristics of the Geothermal Fluids in the Akropotamos Area (Macedonia, Northern Greece)

“…Additionally, water conductivity logs performed in wells AKR-2, AKR-3, AKR-4 and AKR-5 have recorded a rapid and high increase at depths of 100-220 m and the values decrease at greater depths. The maximum value of 34,000 μS/cm was measured at 165 m depth in well AKR-4 (Kolios et al, 2010). Taking account the chemical composition of the seawater in Northern Greece (Dominco and Papastamataki, 1975;Minissale et al, 1989) the influence of seawater on the waters of the shallow geothermal aquifer is highly probable.…”

“…Pliocene sediments consist of travertine deposits, marine sands and clays and calcarenites. Southwards, the entire series is covered with recent coastal and fluvial-torrential deposits and scree (Kolios et al, 2010).…”

“…Two main tectonic blocks are observed: the Akropotamos horst and the Pieria graben (east of the geothermal area). The entire area has been influenced by the presence of the North Anatolia Fault Zone (Kolios et al, 2010). …”