Caption: Basil Tikoff, a professor of geoscience at the University of Wisconsin-Madison, measures gravity at Laguna del Maule, Chile, a volcanic field that has erupted at least 36 times during the last 25,000 years. Tikoff has measured changes in gravity that likely result from rising bodies of hot rock. Rising magma is necessary to fuel an eruption.
Credit: David Tenenbaum/University Communications
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Caption: Brad Singer, a University of Wisconsin-Madison professor of geoscience, inspects a densely-fractured lava flow that cooled rapidly against ice, at Laguna del Maule, Chile. Singer is leading a five-year effort to understand the geology of a volcanic field that has erupted at least 36 times during the last 25,000 years, and that is now experiencing significant uplift due to magma intrusion.
Credit: David Tenenbaum/University Communications
High-resolution JPEG

Caption: Laguna del Maule, Chile, is at the center of a volcanic field that has erupted 36 times during the last 25,000 years, and is now experiencing significant uplift due to magma intrusion. Brad Singer, a University of Wisconsin-Madison professor of geoscience, is leading a five-year effort to explore an area that shows several signs of instability.
Credit: David Tenenbaum/University Communications
High-resolution JPEG