"volcanism is still one of the most inexplicable and profound problems which defy the power of geologists to explain, and one of its most singular peculiarities is the fact that it sometimes breaks forth simultaneously in widely distant portions of the earth.
"Complete Story of the San Francisco Horror"
Richard Linthicum Trumbull White Samuel Fallows
"The focus of annihilation was the new crater midway between the sea and the peak of Mount Pelee where now exists a new area of active volcanism, with hundreds of fumaroles or miniature volcanoes.
"Complete Story of the San Francisco Horror"
Richard Linthicum Trumbull White Samuel Fallows
It may be volcanism or it may be a fault shifting.
"The Flaming Mountain"
Harold Leland Goodwin