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EzraThe resistance to flow of lava depends on its viscosity, which is influenced by factors such as temperature, composition, and gas content. Lava with low viscosity (more fluid) flows more easily, while lava with high viscosity (more sticky) flows less easily. The resistance to flow can also be affected by topography and the presence of obstacles in the lava's path.
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Are Basaltic lavas are generally hotter and more viscous than andesite lavas?
No, basaltic lavas are typically hotter and less viscous than andesite lavas. Basaltic lavas have lower silica content, which results in their lower viscosity and ability to flow more easily. Andesite lavas, on the other hand, have higher silica content and are more viscous.
Are Basaltic lavas generally hotter and more viscous than andesite lavas?
Basaltic lavas are generally hotter and less viscous than andesite lavas. Basaltic lavas have lower silica content, which makes them flow more easily. Andesite lavas, on the other hand, have higher silica content, making them cooler and more viscous.
Is the composition of the hawaiian lavas felsic or mafic?
The composition of Hawaiian lavas is typically mafic, as they are rich in magnesium and iron and have a lower silica content. This composition gives them low viscosity and allows them to flow easily.
Are Sticky thicker lavas rich in silica?
Yes, sticky thicker lavas are rich in silica. This high silica content makes them more viscous and less likely to flow easily, leading to more explosive volcanic eruptions. Examples of these lavas include dacite and rhyolite.
What is the measure of lavas mobility called?
The measure of a lava's mobility is called viscosity, which refers to the resistance of a substance to flow. Lava with low viscosity is more fluid and flows more easily, while lava with high viscosity is thicker and flows more slowly.
