The Mystery of Iceland’s Non-Erupting Volcano
“Some have thoughts that the systems are linked at depth,” says Edward Marshall, a geochemist at the University of Iceland—either directly, with magma flowing between the two subterranean mazes, or indirectly, where they trade pressure. But any geologic connection between Fagradalsfjall and Svartsengi is tenuous at best, making understanding why magma ascends at the former…