Mapping the fizzy brines and fluid-filled fractures below a volcano

Earth’s crust contains pockets of water, metal-rich brines, gas and molten rock, especially near volcanoes and other sites of geothermal activity. Knowing where these fluids are and their precise composition can help scientists assess volcanic hazards, harness geothermal energy and find useful metals, but mapping them is not an easy task.  Read More 

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