Context:

Uturuncu, a dormant volcano in Bolivia, has been exhibiting signs of activity similar to those of active volcanoes, such as gas emissions and earthquakes, despite not having erupted for over 250,000 years. Researchers have been studying its subsurface structure using satellite data, seismic activity analysis, and computer models to understand these signs of unrest. The study found that the activity is due to interactions within a hydrothermal network rather than an imminent magma eruption. The Altiplano-Puna Magma Body, a vast reservoir of magma beneath the volcano, was identified as the source of the geothermal activity, which is causing surface deformation and releasing gases. The findings suggest that while Uturuncu is not likely to erupt soon, studying its dynamics can provide insights into volcanic behavior and potential geothermal energy sources worldwide.

Dive Deeper:

• Uturuncu is categorized as a 'zombie volcano' due to its long dormancy but recent signs of seismic activity and gas emissions, prompting scientists to investigate the possibility of an impending eruption.

• The study utilized a combination of satellite imagery, seismic data from over 1,700 events, and computer modeling to examine the internal structure and dynamics of Uturuncu, revealing a complex hydrothermal system.

• The Altiplano-Puna Magma Body, the largest known magma reservoir within the Earth's crust, lies beneath Uturuncu and is responsible for heating subterranean fluids and releasing gases, causing surface deformation.

• The research suggests that the activity at Uturuncu is not due to magma movement towards the surface, but rather the result of degassing and the movement of heated fluids within a hydrothermal network.

• Scientists emphasized the importance of using multiple investigative techniques to gain a comprehensive understanding of volcanic activity, which can aid in risk assessment and the exploration of geothermal resources.

• There are about 50 known 'zombie volcanoes' globally, many showing geothermal activity but not necessarily being at risk of eruption, highlighting the need for further study to differentiate between those that might become active.

• The findings at Uturuncu are significant for understanding volcanic systems, with implications for harnessing geothermal energy and accessing valuable mineral resources, making it crucial for ongoing scientific exploration.