what causes a eruption to be liolent is the type of lava
-felsic lava is non-violent
-mafic lava is violent
Yes. Pinatubo is an exceptionally violent volcano.
Mt Pinatubo's last big eruption was explosive.
It produces violent eruptions
Volcanic eruptions in the Ring of Fire are generally violent, though not all eruptions are. Kilauea is an example of a volcano that has relatively quiet eruptions, but it is a deep mantle hotspot volcano not part of the ring of fire system and its lava is low in water content. In general the volcanoes in the Ring of Fire that have violent eruptions including Mt. St. Helens, Mt. Pinatubo, Krakatoa, and Mt. Mazama because their lava is high in water content which increases the possibility of steam explosions during an eruption.
An example of a "quiet" eruption would be the 1983-present eruption of Kilauea in Hawaii. A violent eruption would be the 1980 eruption of Mount St Helens.
Only the most violent volcanic eruptions feature a pyroclastic flow.
July 15th 1991 after a series of events. Check Wikipedia for more information. Im writing and essay on mount Pinatubo and findind Wikipedia extremly useful (: ------------------------------------------------------------------------------------------------------------ I'm doing an essay on Mount Pinatubo, actually it's a project and I'm using Wikipedia.
No. Pinatubo is noted for producing exceptionally violent eruptions.
It produces violent eruptions
Volcanic eruptions in the Ring of Fire are generally violent, though not all eruptions are. Kilauea is an example of a volcano that has relatively quiet eruptions, but it is a deep mantle hotspot volcano not part of the ring of fire system and its lava is low in water content. In general the volcanoes in the Ring of Fire that have violent eruptions including Mt. St. Helens, Mt. Pinatubo, Krakatoa, and Mt. Mazama because their lava is high in water content which increases the possibility of steam explosions during an eruption.
An example of a "quiet" eruption would be the 1983-present eruption of Kilauea in Hawaii. A violent eruption would be the 1980 eruption of Mount St Helens.
one of the reasons why Plinian eruptions are more violent is that they release more viscous magma than Hawaiian hawaiian eruption.
A Quiet eruption is one in which no rock or material is erupted from the crater , A violent is one where huge load explosion/ eruption throwing Rocks/ Scoria /Steam /Ash from the vent.May be Lahar as well
Mount Pinatubo is violent.
Only the most violent volcanic eruptions feature a pyroclastic flow.
July 15th 1991 after a series of events. Check Wikipedia for more information. Im writing and essay on mount Pinatubo and findind Wikipedia extremly useful (: ------------------------------------------------------------------------------------------------------------ I'm doing an essay on Mount Pinatubo, actually it's a project and I'm using Wikipedia.
The most explosive eruption of Pinatubo is believed to have occurred around 35,000 years ago. That eruption is estimated to have been five times larger than the 1991 eruption, deposited pyroclastic flow material up to 100 metres (330 ft) thick on all sides of the mountain. In recent history, the strongest eruptions occurred in June 1991 - starting on April 2, with phreatic eruptions along the summit. Additional eruptions continued over the next several several weeks. The most violent phase of the eruptions occurred on June 15 starting some time after 14:30 and lasting about 3 hours.
Both the Pelean and Plinian eruptions are violent, and the Plinian (such as Vesuvius) are the most spectacular type. More specifically, there is a designation "ultra-Plinian" to describe highly explosive eruptions such as Kratatoa. The type of eruption that is most violent is when lava, ash and other materials are hurled into the air.
The most violent historical eruptions of Cotopaxi volcano were in 1744, 1768, and 1904, so to answer your question the most recent eruption was in 1904