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  • Lava | Types, Composition, Temperature, Facts | Britannica
    Lava, magma (molten rock) emerging as a liquid onto Earth’s surface The term ‘lava’ is also used for the solidified rock formed by the cooling of a molten lava flow
  • Lava - Wikipedia
    The solid volcanic rock resulting from subsequent cooling of the molten material is often also called lava A lava flow is an outpouring of lava during an effusive eruption (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows )
  • Anatomy of a Volcano - Volcanoes, Craters Lava Flows (U. S. National . . .
    Some types of volcanoes are exclusively made up of deposits of volcanic ash and other types of tephra Others are nearly wholly made of lava flows And yet others contain both pyroclastic deposits and lava flows, and possibly also lava domes, lahar, and or landslide deposits
  • Lava - New World Encyclopedia
    Fountain of lava, 10 meters high Lava is molten rock expelled by a volcano during an eruption (When the molten rock is beneath the Earth 's surface, it is called magma ) When first exuded from a volcanic vent, the hot lava is at temperatures ranging from 700 °C to 1,200 °C (1,300 °F to 2,200 °F)
  • What is Lava? | Volcano Glossary | Perlan
    Learn about lava, the molten rock that erupts from volcanoes and its types, formation process, and the transformative impact it has on Earth's surface and ecosystems
  • Lava Flows - Woods Hole Oceanographic Institution
    When a volcano erupts, the molten rock that comes out of the Earth is called lava Lava is so hot, it remains molten and flows until it cools and hardens into rock
  • Restless Kīlauea Launches Lava and Ash - NASA Science
    Episode 43 of the Hawaiian volcano’s current eruption was marked by high lava fountains and widespread ash dispersal
  • What is a lava? - The Institute for Environmental Research and Education
    The most common type of lava is basaltic lava, characterized by its low silica content (around 50%) and high iron and magnesium This composition gives it a dark color and relatively low viscosity, allowing it to flow easily
  • What Is A’a Lava? Rough, Jagged Flows Explained - ScienceInsights
    A’a (pronounced “ah-ah”) is a type of lava flow with a rough, jagged, clinkery surface made up of broken lava blocks called clinkers The term comes from Hawaiian, and it describes one of the two main forms that flowing basalt lava takes, the other being the smooth, ropy-surfaced pahoehoe If you’ve ever seen photos of a volcanic landscape covered in what looks like a field of sharp
  • Iceland’s Chief ‘Lava Cooler’ Is Bracing for the Next Eruption
    Helgi Hjorleifsson, a firefighter, is a leader in a national experiment to steer rivers of lava away from important sites Some called it crazy, but it worked





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