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Abstract. We present chemical and isotopic data for fumarolic vapor and thermal spring discharges from Cumbal Volcano, SW Colombia. In 1988 Cumbal showed signs of apparent reactivation. Gases and steam condensates were sampled from summit fumaroles (83375C) of Cumbal in 19881996 and discharges from thermal springs (1537C) on its flanks in 19951996. Based on relative CO2, total S (H2S+SO2), and HCl...
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