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Table 4 Main temperature features of the confined aquifer systems

From: Groundwater age and hydrothermalism of confined aquifers in the Argentine Pampean plain

Aquifer level Deep (m) Upwelling temperature (°C) Overheating with depth (°C) Classification by temperature
A1 CAS 120–200 25.0–30.9 5.5–9.4 Hypothermal
A2a CAS 225–290 29.0–35.3 4.2–10.0 Hypothermal to mesothermal
A2b CAS 225–320 33.8–35.8 7.7–9.9 Hypothermal to mesothermal