The recent spectacular eruptions of the Hawaii volcano are awe inspiring and show the awesome power of the Earth. It’s hard ...

Comprised of about 1,800 square miles, it is the location of more than 600 volcanic vents in the form of basalt cinder cones ... complex composed of rhyloite, tuff and obsidian mixed with alluvium ...

One notable locality for augite specimens in Arizona is northwest of Flagstaff at Red Mountain, a cinder cone volcano that exploded more than 750,000 years ago. Specimens occur in volcanic tuff ...

The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat ...

This UNESCO World Heritage site is a tuff cone crater formed by hydrovolcanic eruptions over 5,000 years ago. Over time, the eruption built up layers of volcanic ash and rock, marking a bowl ...

while the ancient city of Ani showcases tuff's artistic potential. Armenian churches are famous for their pointed domes, mirroring the volcanic cone of Mount Ararat. These domes rise atop ...

The olivine here originates from nearby volcanic tuff cones, eroded over time and blended with the fine, flour-like sand. This remote shore, part of a UNESCO World Heritage site, is a sanctuary ...

The Athabasca Valles system offers key insights into the history of water on the Red Planet, and its volcanic features such as crater-like rootless cones hint at brief episodes in Mars' past when ...

a volcanic tuff cone. A Diamond Head lookout Start your weekend by heading toward Diamond Head, the Oahu landmark that was formed by a volcanic eruption some 300,000 years ago and looms on the ...

The name reflects the rock’s Greek origin, as well as the fact that it was significantly older than much of the volcanic activity we know about on land. Based on the Archaeos Tuff’s ...

Boasting the largest young basaltic lava field in the contiguous United States, the monument is a volcanic wonderland of cones, vents, fissures, and flows. Though eruptions that forged this ...