The most likely suspect is the gargantuan Bishop Tuff eruption that formed Long Valley Caldera in California 767,000 years ago, Myers said. Meanwhile, the origin of the older of the two ash ...

The second scenario presumes a slower erosion rate, which leaves the tuff cone intact for about 25-30 ... The new island is perched on the north rim of a caldera on top of an underwater volcano ...

Visitors snap photos and make anxious phone calls home—only after Googling, “Does Mount Shasta erupt?” Locals, however, hardly look up. Mt. Shasta is one of California’s seven ...

Scientists in Wyoming have discovered evidence of two mysterious volcanic eruptions that are older than the last caldera-forming supereruption at Yellowstone. The ash deposits were buried beneath ...

The Masseria del Monte Tuff eruption was smaller than the older caldera-forming eruption, the enormous Campanian Ignimbrite (about 40,000 years old), which dispersed ash as far as Russia (more ...

I'm not saying this to scare anyone or fear monger, but any time you have a large, restless caldera ... Tuff that added another 40 cubic kilometers on top. However, the recent history of the Campi ...

It has produced three caldera-forming eruptions in the past 3 million years: the Huckleberry Ridge Tuff eruption, 2.1 million years ago; the Mesa Falls eruption, 1.3 million years ago; and the ...

Roche and others looked at the Peach Springs Tuff, a massive volcanic deposit that erupted from the Silver Creek Caldera in Arizona about 18.8 million years ago. Now, the Peach Springs Tuff dwarfs ...

It includes Geomunoreum, regarded as the finest lava tube system of caves anywhere, with its multicoloured carbonate roofs and floors, and dark-coloured lava walls; the fortress-like Seongsan ...