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 ...

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 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 ...

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 ...

The Ibex Hollow Tuff, erupted from the Bruneau-Jarbidge caldera complex about 12 million years ago, stretches from offshore California to Nebraska and is the ash layer that preserves ancient ...

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 ...

In 2008, I trekked through the Long Valley Caldera in California and in the Bishop Tuff – the huge (~200 cubic km) rhyolite tuff from the caldera-forming eruption 774,000 years ago – you can find very ...

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 ...

These are the Yellowstone Caldera and the Lava Creek Tuff. Other calderas such as the Huckleberry Ridge Tuff and the Island Park Caldera were formed during eruptions 2.1 million years. The Mesa Fa ...