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Table 1 Temperature and flow rates of thermal waters in the hydrogeological provinces across Ukraine (province boundaries can be seen on Fig. 1)

From: An assessment of technical and economic feasibility to install geothermal well systems across Ukraine

Hydrogeological area Depth, km Aquifers, age Groundwater temperature,  °C Flow rate, m3/day
I. Fold province of the Carpathians (west) 0.6–0.9 Sandstones and limestones, N 31 50–75 430–1200
1.9–2.3 Sands, N 21 120–130 5–10
II. Volyn-Podilsky artesian basin (northwest) 0.9–1.1 Fractured sandstones and limestones, D 35–45 20–40
1.8–2.0 Fractured sandstones and limestones, D 60–70 20–40
III. Fold province of Ukrainian crystalline shield (central part) 0.8–1.0 Karstified Dolomite Marbles, PR 30–35 300–400
1.9–2.4 Granites, PR 50–55 50–100
IV. The Black Sea artesian basin (south) 1.5 Chalky clay and sandstones, K 50 500–1500
3.0 Chalky clay and sandstones, K 90 500–1500
V. Fold province of the Mountainous Crimea (Crimean Peninsula) 1.1 Karstified limestone and sandy-argillaceous rocks, T3 – J2 30–35 10–20
1.9 Karstified limestone and sandy-argillaceous rocks, T3 – J2 65–70 10–20
VI. Fold province of the Donets basin (east) 0.9–1.2 Fractured and fractured-karstified limestones, D2 27–40 200–400
1.8–2.0 Sandstones and conglomerates, D2 70–75 75–150
VII. The Dnipro-Donets artesian basin (north-east) 1–1.2 Sands and sandstones, P 35–60 10–250
1.9–2.3 Fractured sandstones and limestones, D 50–90 80–500
  1. Data are given according to Gordienko et al. (2002), Maliarenko et al. (2002), Mhitaryan and Machulin (2006)