IN my discourse this evening I shall confine myself to that branch of vulcanology to which I have paid attention, viz. the naked-eye study of volcanoes and their various constituent parts, their ...

PROF. RUSSELL'S beautiful volume is, in some sense, a companion to Sir Archibald Geikie's account of the volcanoes of Great Britain; but whereas the latter deals with volcanic relics of all ages in an ...

SKAMANIA COUNTY, Wash. — For thousands and thousands of years, the Pacific Northwest has had a history of active volcanism. And on May 18, 1980, Mount St. Helens violently erupted. Many in central and ...

The eruption of Mount Pinatubo volcano in June 1991 is the second largest volcanic eruption of the twentieth century. Understanding how volcano activity may change over time is particularly important ...

Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analyzed summit dome ...

Volcanic relics scattered throughout the Australian landscape are a map of the northward movement of the continent over a 'hotspot' inside the Earth, during the last 35 million years. Volcanic relics ...

ANCHORAGE, Alaska — Three remote Alaska volcanoes are in various states of eruption, one producing lava and the other two blowing steam and ash. So far, none of the small communities near the ...

Let’s take a look at 10 trails that trace those forces—but remember, some of these magmatic marvels are merely napping. It’s ...