| 21. | Bazman has no recorded historical eruptions but fumarolic activity has been reported, as well as ongoing surface deformation.
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| 22. | Some craters may have been affected by fumarolic activity, which has left sodium sulfate minerals such as mirabilite.
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| 23. | Paruma has been active historically, is covered by several young lava flows, and has continued fumarolic activity.
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| 24. | Further, fumarolic activity has been reported at Alitar, Lastarria, Olca, Ollague, Putana and Tacora.
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| 25. | Volcanic massif of the Po�s Volcano is the central feature of Po�s Volcano National Park, featuring permanent fumarolic activity.
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| 26. | Southeast of the mountain is the Mount Patoc, the other volcano of the Central Cordillera Range displaying strong fumarolic activity.
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| 27. | Due to the volcano's fumarolic activity, it has been studied and proposed as a source of geothermal energy.
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| 28. | At other volcanoes, such uplift has been associated with changes in fumarolic activity or even the start of an eruption.
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| 29. | Their last eruption was in 1950, and now only fumarolic activity, primarily inside the recently active craters, takes place.
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| 30. | Seismic activity is also observed on Irruputuncu, and ongoing fumarolic activity releasing of has left sulfur deposits in the active crater.
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