As of June 2014, the last time Mount Etna erupted was January 2014. The eruption was the first of the year 2014 and was caused by formation of a new crater on the southeastern volcano that resulted from the 2013 eruption.
The latest eruption was not as explosive as the previous eruptions. It was milder compared to the gigantic fountains of lava that previous eruptions produced, especially in 2013. This eruption produced a flow of lava from the new southeast crater that snaked down the slopes of the mountain. Mount Etna is among the world's most active volcanoes and is in a nearly constant state of activity.Learn More
Mount Shasta's magma is composed of basalts and basaltic andesite. These two types of magma are very runny, forming large shield cones and steep, loose tephra cones. The basaltic andesites at Mount Shasta are unusually rich in magnesium.Full Answer >
Volcanologists wear heavy boots, long-sleeved shirts and heavy work gloves in order to protect their bodies from lava near a volcano. According to Oregon State University, volcanologists might also wear jeans, a rock-climbing helmet for protection and a gas mask.Full Answer >
The Earth has approximately 20 known supervolcanoes, according to James Morgan, who write for the BBC News. What constitutes a "supervolcano" is not clearly defined, so the term is avoided in the literature, but it is often used in reference to two distinct phenomena.Full Answer >
According to the UCSB Geology Department, a volcanic eruption is defined as a volcanic event resulting in the emission of gases, lava, ash or other material from a volcano. These can manifest as a single eruptive pulse, an eruptive phase or an eruptive episode.Full Answer >