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Zagros mountain range (ZMR) contains the most karst carbonate formations in Iran. Because of the broad expansion of folded and fractured carbonate rocks, well-developed karstic aquifers occur in NW of ZMR which is reflected in the existence of many karstic springs with large discharge (up to 6 m3/s). These important karstic formations in Paveh (PV), Javanrood (JR), Ravansar (RS) and Sarpol Zahab (PZ)...
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