The dome (see above and below) had been growing off and on since 1980. Domes like this are created by the slow extrusion of sticky andesite lava. This viscous stuff doesn't flow particularly well, so ...

The role of rain in this case has raised questions around whether climate change could bring more frequent “lava-dome” eruptions, which tend to be stronger and more destructive than other types.

About Lassen Volcanic National Park The park is one of the only places on Earth to play host to all four types of volcanoes, including cinder cones, shield, composite, and plug dome volcanoes.

Lassen Volcanic National Park, about three hours from Reno in Northern California, ... Lassen Peak is the largest plug dome volcano in the world and a signature feature of the park.

They shoot molten lava and toxic gases miles into the atmosphere and when the lava is too thick to run over the top, it can create what geologists like Dr. Pat Abbott call a plug dome volcano. Local ...

Mount Merapi is the most active volcano in Indonesia and is due for a 'large' event after the last big eruption in 2010. ... gas-rich plug known as a volcanic dome which can violently explode.

A flurry of seismic activity that caused 160 quakes in just two hours at the Laguna del Maule volcanic field in central Chile has put authorities on alert.. 160 quakes occurred in the area during ...

SANTIAGO (Reuters) -A seismic swarm that caused 160 quakes in two hours at the Laguna del Maule volcanic field in central Chile earlier this week has put authorities and citizens on alert. The ...

Other notable rhyolite domes include the few-hundred-year-old Inyo Craters in eastern California, and at Chaitén, Chile, where a dome formed during an eruption in 2008.