Various geologists have attributed varying ages to these volcanoes, ranging from Pliocene to Holocene. The volcano was active in the Pleistocene, with K-Ar dating indicating an age of 0.6±1 Ma. There have been numerous phases of volcanic activity in the region until recent times, with Agua Poca belonging to the Puente Group given stratigraphic and radiometric data.: Activity was strombolian in nature with the formation of Pele's tears and lava bombs and was likely monogenetic in nature. A fault system running through the edifice possibly controlled the activity of this volcano.: