A lahar is type of mudflow associated with violent eruptions. It is composed of a slurry of pyroclastic material, water and rocky debris.
A lahar
It produces violent eruptions
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.
Thick due to high silica content.
It is not a composite volcano or a cinder cone volcano... it's not even a shield volcano so it is NOT one of the three main volcanoes
what causes a eruption to be liolent is the type of lava -felsic lava is non-violent -mafic lava is violent
It produces violent eruptions
Rhyolite is associated with explosive eruptions.
Because it all depends on what type of volcano it is, if it is a shield volcano low and flat it's eruptions will be gentle. But if it is a cone volcano tall and steep it's eruptions will be very violent.
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.
Thick due to high silica content.
Highly viscous felsic magma causes the most violent volcanic eruptions.
It is not a composite volcano or a cinder cone volcano... it's not even a shield volcano so it is NOT one of the three main volcanoes
what causes a eruption to be liolent is the type of lava -felsic lava is non-violent -mafic lava is violent
Plinian eruptions are usually associated with felsic magmas.
Violent storms are often associated with cold fronts.
A lahar is a specific type of mudflow formed primarily of volcanic material.
Basaltic magmas are associated with fissure eruptions creating lava flows spilling out from cracks in the crust. This is because basaltic magmas are more viscous and contain a lower concentration of gases than rhyolitic magma and therefore are unable to build up sufficient pressure to produce explosive eruptions.