are cinder cone volcanoes explosive or nonexplosive?
15363
Shield volcano eruptions are less explosive than composite volcanoes. Cinder cone volcanoes are steep, cone-shaped volcanoes built from lava fragments called 'cinders.
997303
['Fissure Volcanoes. ... ', 'Shield Volcanoes. ... ', 'Stratovolcanoes. ... ', 'Cinder Cone. ... ', 'Caldera.']
505599
Volcanoes can erupt in any season. It isn't the weather that causes or prevents a volcano from erupting.
470672
In general, the more felsic the magma the greater the volatile content. So mafic/basaltic volcanoes are fairly quiescent, intermediate/andesitic volcanic eruptions are moderately explosive, and felsic/rhyolitic volcanoes may be extremely explosive. ... Their high volatile content makes them potentially highly explosive.
1088519
The collapse of the Unzen volcanic dome in Japan created a pyroclastic flow of shattered lava fragments, volcanic gas, and air. A faster moving ash-cloud surge formed above and in front of the flow. Ash and hot gas then formed an eruption column.
339940
Eruptions at shield volcanoes are only explosive if water somehow gets into the vent , otherwise they are characterized by low-explosivity fountaining that forms cinder cones and spatter cones at the vent, however, 90% of the volcano is lava rather than pyroclastic material.
948269
There are three main types of volcano - composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. ... When composite volcanoes erupt they are explosive and pose a threat to nearby life and property.
1100723
A volcano which has not erupted in the past 10,000 years is often listed as extinct. The extinct volcano no longer has a lava supply. An extinct volcano is no longer near an active geologic hot spot, if it ever was. ... Dormant volcanos may still erupt, whereas extinct ones cannot.
316029
The primary danger from cinder cone volcanoes is lava flows. Once the bulk of the gasses have been released, the eruptions begin to produce large flows of runny lava. These flows typically emerge from either fissures at the base of the volcano or breaches of the crater wall.
459226
Viscosity, together with the amount of gas dissolved in magma, can determine the explosivity of the eruption. More viscous magma with volatiles is more explosive than less viscous magma, where gases can bubble out relatively easily.
807121
Yellowstone, one of the world's largest active volcanic systems, has produced several giant volcanic eruptions in the past few million years, as well as many smaller eruptions and steam explosions. Although no eruptions of lava or volcanic ash have occurred for many thousands of years, future eruptions are likely.
825677
Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions.
844709
['A volcano is formed by eruptions of lava and ash.', 'Volcanoes are usually cone shaped mountains or hills.', "When magma reaches the Earth's surface it is called lava. ... ", 'Volcanic eruptions can happen at destructive and constructive boundaries , but not at conservative boundaries or collision zones .']
232484
Three characteristics of magma that mainly affect the explosiveness of a volcanic eruption include gas content, viscosity, and temperature. The gas content of magma mainly affects the explosiveness of a volcanic eruption because the volume of gas expands as the pressure is reduced.
1251182
Would quiet eruptions or explosive eruptions be more likely to increase the height of a volcano? ... Quiet eruptions, because they usually build up layers of lava whereas explosive eruptions often blow up the top of a volcano, decreasing its height.
902530
In general, eruptions can be categorized as either effusive or explosive. Effusive eruptions involve the outpouring of basaltic magma that is relatively low in viscosity and in gas content. Explosive eruptions generally involve magma that is more viscous and has a higher gas content.
1219358
Most shield volcanoes feature a central summit vent, and often flank vents, that eject low-viscosity basaltic lava that flows long distances in all directions before solidifying. Shield volcano eruptions are typically effusive, not explosive, and pose little danger to human life.