There are three major types of volcanoes
Stromboli is a Stratovolcano wich is also known as a Composite volcano. Stratovolcanoes are characterized by the eruptions of andesite and dacite. Stratovolcanoes form typically at convergent plate margins, where one plate descends beneath an adjacent plate at the subduction zone. The explosions are caused when a bubble of gas burst explosively at the top of the conduit. The rock of Stromboli is over 2000 years old.
Types of Eruptions
Vulcanian Eruption: A Vulcanian eruption is a short, violent, relatively small explosions of viscous magma (usually andesite, dacite, or rhyolite) almost like our volcano Stromboli. This type of eruption results from fragmentation and explosion of a plug lava in a volcanic conduit, or from the rupture of a lava dome (viscous lava that piled over a vent.)
Hawaiian Eruption: A Hawaiian eruption is a type of volcanic eruption where lava flows from the vent in a relatively gentle, low level eruption; it is so named because it is characteristic of Hawaiian volcanoes. Typically they are effusive eruptions with basaltic magmas of low viscosity low content of gases, and high temperature at the vent. Very little amounts of volcanic ash are produced.
Strombolian Eruption: A Stromboli eruption is a distinct burst of fluid lava usually basalt or basaltic andesite) from the mouth of a magma filled summit conduit. The explosions usually occur every few minuets in regular or irregular intervals The lava flows are more viscous, and therefore shorter and thicker, than the corresponding Hawaiian eruptions, it may or may not be accompanied by production of pyroclastic rock. The explosions of lava can reach a height of hundreds of meters. This kind of eruption is often associated with small lava lakes, which can build up in the conduits of volcanoes; these are less violent. This kind of eruption can create a variety of forms of eruptive products: spatter, or hardened globs of glassy lava, and scoria which is hardened chunks of bubbly lava.
- Cinder Cone: These volcanoes have a steep conical hill with straight sides. A cinder cone volcano is less than three hundred meters high. The volcano material is cinders. The eruption type is explosive. This volcano is the most common.
- Shield Volcano: Very gentle slopes that convex upward which is shaped like a warriors shield. The volcanic material (fluid lava flows) is basalt. Its eruption type is quiet.
- Stratovolcano (Composite): It has gentle lower slopes but steep upper slopes that concave upward. It is large with a 1-10 km in diameter. The volcanic material is lava and pyroclastics. The type of eruption is explosive.
Stromboli is a Stratovolcano wich is also known as a Composite volcano. Stratovolcanoes are characterized by the eruptions of andesite and dacite. Stratovolcanoes form typically at convergent plate margins, where one plate descends beneath an adjacent plate at the subduction zone. The explosions are caused when a bubble of gas burst explosively at the top of the conduit. The rock of Stromboli is over 2000 years old.
Types of Eruptions
Vulcanian Eruption: A Vulcanian eruption is a short, violent, relatively small explosions of viscous magma (usually andesite, dacite, or rhyolite) almost like our volcano Stromboli. This type of eruption results from fragmentation and explosion of a plug lava in a volcanic conduit, or from the rupture of a lava dome (viscous lava that piled over a vent.)
Hawaiian Eruption: A Hawaiian eruption is a type of volcanic eruption where lava flows from the vent in a relatively gentle, low level eruption; it is so named because it is characteristic of Hawaiian volcanoes. Typically they are effusive eruptions with basaltic magmas of low viscosity low content of gases, and high temperature at the vent. Very little amounts of volcanic ash are produced.
Strombolian Eruption: A Stromboli eruption is a distinct burst of fluid lava usually basalt or basaltic andesite) from the mouth of a magma filled summit conduit. The explosions usually occur every few minuets in regular or irregular intervals The lava flows are more viscous, and therefore shorter and thicker, than the corresponding Hawaiian eruptions, it may or may not be accompanied by production of pyroclastic rock. The explosions of lava can reach a height of hundreds of meters. This kind of eruption is often associated with small lava lakes, which can build up in the conduits of volcanoes; these are less violent. This kind of eruption can create a variety of forms of eruptive products: spatter, or hardened globs of glassy lava, and scoria which is hardened chunks of bubbly lava.