It appears that these magma bodies exist beneath volcanoes over their whole lifetime, not just during an active state.' ...
Long-quiet volcanoes in the Cascades region of the Pacific Northwest are still underpinned by large reservoirs of magma, new research finds. The findings have implications for monitoring volcanoes ...
Mount Rainier - one of many volcanoes found in ... Their results are surprising given that some of these volcanoes, such as the Crater Lake volcano in Oregon, have not been active in millennia.