Table of Contents
- 1 What is the most explosive magma?
- 2 What type of magma is the most violent?
- 3 What type of magma has the highest silica content?
- 4 Which type of magma will produce the least explosive volcanic eruption quizlet?
- 5 Which volcano has the most explosive eruption?
- 6 Which characteristic of magma mainly determines its explosiveness?
- 7 What is the hottest type of magma in the world?
- 8 How much more viscous is rhyolitic magma than water?
What is the most explosive magma?
Pelean eruptions are considered violently explosive. Plinian – These eruptions result from a sustained ejection of andesitic to rhyolitic magma into eruption columns that may extend up to 45 km above the vent.
What type of magma is the most violent?
The largest and most violent of all the types of volcanic eruptions are Plinian eruptions. They are caused by the fragmentation of gassy magma, and are usually associated with very viscous magmas (dacite and rhyolite).
Is mafic magma more explosive?
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.
Which magma is least explosive?
The least explosive type of volcano is called a basalt plateau. These volcanoes produce a very fluid basaltic magma with horizontal flows. The form of these volcanoes is flat to gently sloping and they can occupy an area from 100,000 to 1,000,000 square kilometers.
What type of magma has the highest silica content?
Felsic magmas are higher in silica and contain lighter colored minerals such as quartz and orthoclase feldspar. The higher the amount of silica in the magma, the higher is its viscosity.
Which type of magma will produce the least explosive volcanic eruption quizlet?
A more viscous (thick) magma will produce a more violent eruption This is controlled in part by the concentration of silica in the magma. A magma with low silica (<45\%) will be runny and so the eruption will not be explosive.
Which magma composition is most likely lead to an explosive eruption?
Explosive eruptions are favored by high gas content & high viscosity magmas (andesitic to rhyolitic magmas). The explosive bursting of bubbles fragments the magma into clots of liquid that cool as they fall through the air.
Which characteristic of magma mainly determines it explosiveness?
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.
Which volcano has the most explosive eruption?
Mt Tambora, Indonesia, 1815 (VEI 7) Tambora is the deadliest eruption in recent human history, claiming the lives of up to 120,000 people. On 10 April 1815, Tambora erupted sending volcanic ash 40km into the sky. It was the most powerful eruption in 500 years.
Which characteristic of magma mainly determines its explosiveness?
What type of magma would probably cause the most explosive eruptions?
What type of magma would probably cause the most explosive eruption? The rhyolitic magma is the type of magma that causes most of the explosive eruptions of the volcanoes around the world. This magma is causing explosive eruptions because of the high content of silica and gasses in the magma.
What type of magma is non explosive?
Effusive or Non explosive eruptions are favored by low gas content and low viscosity magmas (basaltic to andesitic magmas). If the viscosity is low, non-explosive eruptions usually begin with fire fountains due to release of dissolved gases. Additionally, what is the most explosive magma?
What is the hottest type of magma in the world?
Also often referred to as Malfic, Basaltic magmas are the hottest of all the magma types currently in existence, with temperatures ranging from 1000 to 1200 degrees C (about 1800 to 2200 F). The silica content of Basaltic magmas is between 45 and 55 percent, which is lower than any other magma type.
How much more viscous is rhyolitic magma than water?
Rhyolitic magmas tend to have even higher viscosity, ranging between 1 million and 100 million times more viscous than water. What type of magma would probably cause the most explosive eruption? The rhyolitic magma is the type of magma that causes most of the explosive eruptions of the volcanoes around the world.