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Correct order of decreasing magma viscosity?
The amount of viscosity present in magma depends on the amount of silica it has. A composite volcano produces rhyolitic lava which is very thick. A shield volcano produces a basaltic lava with less silica and significantly less viscosity.
Does balsaltic lava have a high gas content?
Basaltic lava typically has a low gas content compared to other types of lava such as andesitic or rhyolitic. This is because basaltic lava is less viscous, allowing gases to escape more easily, resulting in less gas being trapped within the lava as it erupts.
Which lava is less viscous rhyolitic or basaltic?
Basaltic lava is less viscous.
Why is blocky lava an important clue to the explosiveness of volcano?
Blocky lava, known as andesitic or rhyolitic lava, typically indicates a high-viscosity magma that traps gases, leading to explosive eruptions. The angular, jagged formations of blocky lava suggest that the lava cools and solidifies relatively quickly, often in a more viscous state. This behavior contrasts with fluid basaltic lava, which tends to flow smoothly and produce less explosive eruptions. Therefore, the presence of blocky lava can signal a volcano's potential for more violent eruptive activity.
Does basilic lava have low silica?
Yes, basaltic lava has low silica content compared to other types of lava. Basaltic lava is typically rich in iron, magnesium, and calcium, which contribute to its low silica content. This low silica content also makes basaltic lava less viscous and more likely to flow easily.
Correct order of decreasing magma viscosity?
The amount of viscosity present in magma depends on the amount of silica it has. A composite volcano produces rhyolitic lava which is very thick. A shield volcano produces a basaltic lava with less silica and significantly less viscosity.
Does balsaltic lava have a high gas content?
Basaltic lava typically has a low gas content compared to other types of lava such as andesitic or rhyolitic. This is because basaltic lava is less viscous, allowing gases to escape more easily, resulting in less gas being trapped within the lava as it erupts.
Which lava is less viscous rhyolitic or basaltic?
Basaltic lava is less viscous.
How is basaltic lava different from granitic lava?
Basaltic lava is far less viscous, has less silica, erupts at a higher temperature and is denser than granitic lava (properly called rhyolitic lava when it is on the surface). Basaltic lava is composed primarily of pyroxenes and calcium rich plagioclase with small amounts of olivine. Rhyolitic lava primarily contains alkali feldspars and quartz.
Why is blocky lava an important clue to the explosiveness of volcano?
Blocky lava, known as andesitic or rhyolitic lava, typically indicates a high-viscosity magma that traps gases, leading to explosive eruptions. The angular, jagged formations of blocky lava suggest that the lava cools and solidifies relatively quickly, often in a more viscous state. This behavior contrasts with fluid basaltic lava, which tends to flow smoothly and produce less explosive eruptions. Therefore, the presence of blocky lava can signal a volcano's potential for more violent eruptive activity.
Does basilic lava have low silica?
Yes, basaltic lava has low silica content compared to other types of lava. Basaltic lava is typically rich in iron, magnesium, and calcium, which contribute to its low silica content. This low silica content also makes basaltic lava less viscous and more likely to flow easily.
If your business is in agriculture which side of the volcano are you going to invest the side with basaltic lava or granitic lava?
If my business is in agriculture, I would invest on the side of the volcano with basaltic lava. Basaltic lava typically results in fertile soils due to its mineral content, which can enhance plant growth and agricultural productivity. In contrast, granitic lava tends to produce less fertile soils, making it less suitable for farming. Thus, the basaltic side offers better conditions for successful agricultural ventures.
What are the two types of magma and what makes them different?
I'm not sure... but the two different types of lava are: Viscous - sticky and slow moving, resulting in tall volcanoes Non Viscous - runny and fast moving, resulting in short and very spread out volcanoes (shield volcanoes)
What Type of Lava usually flows out of oceanic volcanoes?
Oceanic volcanoes usually release basaltic lava. Basaltic lava is low in silica content, which makes it less viscous and allows it to flow easily and travel long distances before solidifying. This type of lava is common in underwater volcanic activity due to the melting of basaltic oceanic crust.
Which type of lava-basaltic lava or rhyolitic lava flows faster and why?
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
What type of lava did Eyjafjallajökull produce?
Eyjafjallajökull volcano produced a type of lava called basaltic lava. Basaltic lava is low in silica content, which makes it less viscous and allows it to flow more easily over the surface, leading to the formation of shield volcanoes like Eyjafjallajökull.
What is mafic lava like?
Mafic lava is low in silica and high in iron and magnesium, which makes it less viscous and more fluid compared to felsic lava. It tends to flow easily and often forms basaltic rocks when it cools. Mafic lava eruptions typically result in gentle, effusive lava flows rather than explosive eruptions.
