The geologic history of Putana is unknown, due to the lack of detailed studies on the subject.
The last eruption at Putana was reported from the late 19th century; one date given is 1810 with an uncertainty of 10 years and the eruption was described as a major one.
Reports of an eruption on 2 July 1972 ± 182 days are uncertain, and other opinions say that there was no historical eruption there.

Between late 2009 and early 2010, the volcano underwent an episode of deformation accompanied by earthquake swarms.
Based on modelling, about 300,000 cubic metres (11,000,000 cu ft) of magma were intruded at a depth of 1 kilometre (0.62 mi) during this episode, lifting the ground by about 4 centimetres (1.6 in) over a diameter of 5 kilometres (3.1 mi).
Aside from this episode, Putana is seismically active, both in form of individual events, seismic swarms and triggered earthquakes; the 2010 Maule earthquake was accompanied by seismicity at Putana.
The geologic history of Putana is unknown, due to the lack of detailed studies on the subject. The last eruption at Putana was reported from the late 19th century; one date given is 1810 with an uncertainty of 10 years and the eruption was described as a major one. Reports of an eruption on 2 July 1972 ± 182 days are uncertain, and other opinions say that there was no historical eruption there.
Between late 2009 and early 2010, the volcano underwent an episode of deformation accompanied by earthquake swarms. Based on modelling, about 300,000 cubic metres (11,000,000 cu ft) of magma were intruded at a depth of 1 kilometre (0.62 mi) during this episode, lifting the ground by about 4 centimetres (1.6 in) over a diameter of 5 kilometres (3.1 mi). Aside from this episode, Putana is seismically active, both in form of individual events, seismic swarms and triggered earthquakes; the 2010 Maule earthquake was accompanied by seismicity at Putana.
Putana (volcano)