10,000 eC
In one sense, you can divide volcanic eruptions into two general types: "red" eruptions and "gray" eruptions. "Red" eruptions are generally nonexplosive or mildly explosive. These eruptions produce flows or fountains of glowing red lava. The lava flows can be destructive, but they generally move slowly, so "red" eruptions rarely cause a significant loss of life. "Gray" eruptions ares explosive. They produce clouds of hot ash and rock. Some of these clouds race down the slopes of a volcano as pyroclastic flows, burning everything in their path. These flows along with other hazards make "gray" eruptions extremely dangerous.
No. Plinian eruptions are generally the most destructive. Vulcanian eruptions may be orders of magnitude smaller.
desrts
Large explosive eruptions are generally characteristic of stratovolcanoes.
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.
Shielf volcanoes generally produce "quiet" eruptions. Explosive eruptions are rare.
No. Kilauea generally produces effusive eruptions. Explosive eruptions are rare.
Generally not. Explosive eruptions may happen occasionally, but most eruptions are effusive.
Generally, it would be water.
Generally not. Most eruptions in Hawaii are effusive.
In one sense, you can divide volcanic eruptions into two general types: "red" eruptions and "gray" eruptions. "Red" eruptions are generally nonexplosive or mildly explosive. These eruptions produce flows or fountains of glowing red lava. The lava flows can be destructive, but they generally move slowly, so "red" eruptions rarely cause a significant loss of life. "Gray" eruptions ares explosive. They produce clouds of hot ash and rock. Some of these clouds race down the slopes of a volcano as pyroclastic flows, burning everything in their path. These flows along with other hazards make "gray" eruptions extremely dangerous.
In one sense, you can divide volcanic eruptions into two general types: "red" eruptions and "gray" eruptions. "Red" eruptions are generally nonexplosive or mildly explosive. These eruptions produce flows or fountains of glowing red lava. The lava flows can be destructive, but they generally move slowly, so "red" eruptions rarely cause a significant loss of life. "Gray" eruptions ares explosive. They produce clouds of hot ash and rock. Some of these clouds race down the slopes of a volcano as pyroclastic flows, burning everything in their path. These flows along with other hazards make "gray" eruptions extremely dangerous.
No. Plinian eruptions are generally the most destructive. Vulcanian eruptions may be orders of magnitude smaller.
Volcanic eruptions are always caused by magma. This applies if the eruption is quiet or explosive, or whether the magma is felsic or mafic.
No. A supervolcano produces extremely large, explosive eruptions. Kilauea generally produces relatively nonviolent eruptions that are occasionally mildly explosive.
no
desrts