Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 45

lava - Lava composition, Volcanic Morphologies, Lava landforms, Composition of volcanic rocks, Unusual lavas, Hazards

temperature

Hot molten rock erupted onto the Earth's surface from a volcano. On solidification it forms volcanic igneous rocks such as rhyolite, andesite, or basalt. Lava temperature and viscosity depends on its chemical composition, with the more silica-rich lava being cooler (around 900°C) and more viscous than basic lavas (temperature up to 1100°C), which flow more freely, forming volcanoes with gentle slopes.

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or