Assertion: magma's viscosity | /r/HasProperty | high
Facets:
Source sentences:
text: If the magma has a high viscosity, meaning it resists flow very well, the gas bubbles will have a hard time escaping from the magma, and so will push more material up, causing a bigger eruption.
text: As a general rule, the most explosive eruptions come from magmas that have high gas levels and high viscosity, while the most subdued eruptions come from magmas with low gas levels and low viscosity.
text: Since the viscosity is so high, the lava does not flow away from the vent, but instead piles up over the vent.
text: Since the viscosity is so high, the lava does not flow away from the vent, but instead piles up over the vent.
text: The viscosity can be so high that the gas can only escape by blasting the magma from the vent.
text: Silica-rich magma has a high viscosity, and therefore does not flow easily like basalt.
text: Silicic magmas typically form blocky lava flows or steep-sided mounds, called lava domes, because their high viscosity does not allow it to flow like that of basaltic magmas.