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 …

Lava flows are streams of molten rock that pour or ooze from an erupting vent. Lava is erupted during either nonexplosive activity or explosive lava fountains.

Apr 18, 2023 · Lava flow: An outpouring of molten rock from a vent onto Earth's surface during an effusive volcanic eruption; also, the resulting solidified body of rock. Together, composition …

Oct 8, 2025 · Pyroclastic flows, which are low-viscosity, fluidized mixtures of hot but solid volcanic fragments and hot gas, are often described in newspaper accounts as lava flows.

Jul 20, 2023 · When a volcano erupts, the molten rock (or magma) that comes out of the Earth is called lava. Because lava is so hot (more than 1,100 degrees C, over 2,000 degrees F), it …

As a lava flow cools and crystallizes into a coherent rock, it begins to contract. Shrinkage of the rock mass results in the development of numerous cracks, called joints.

Jul 17, 2025 · Ever wondered about the rivers of molten rock that erupt from volcanoes? Dive deep into the world of lava flows! This guide explores how they form, the different types and its …

Jan 10, 2025 · Studying the lava flows on Earth with surfaces similar to lava on other planets and moons can help scientists understand their volcanic history and the processes under the …

Lava flows are the least hazardous of all processes in volcanic eruptions. How far a lava flow travels depends on the flows temperature, silica content, extrusion rate, and slope of the land.

Jul 9, 2024 · Introduction Young basaltic lava flows, with surfaces that are either smooth and ropy or rough and clinkery, are dramatic landscapes of dark volcanic rock. Depending on how …