Oct 26, 2022 · Learn about the types of lava including the forms of lava flow (pahoehoe and a'a) and the chemical composition based on silica content.

Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano …

Jan 19, 2025 · 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. The …

Aug 12, 2023 · There are six lava flow types or morphologies: pahoehoe, aa, blocky lava, pillow lava, sheet flow, and lobate. The first three are subaerial, and the last three are subaqueous …

Mar 31, 2023 · There are 4 main types of lava: felsic, andesitic, basaltic, and ultramafic. They’re classified by their varying levels of silica. Learn more about them here!

Mar 25, 2009 · There are several different types of volcanoes: steep stratovolcanoes, wide shield volcanoes, and mounded lava domes. The shape of a volcano actually depends on the types …

Before we explain the different types of lava that there are, we want to make a brief summary about the main characteristics of this substance. The best way to achieve this goal is to start …

Dec 6, 2023 · Two types of lava flows can be seen in the park, pāhoehoe and ʻa‘ā. Pāhoehoe lava appears smooth and ropy. It moves slower and stays hotter than ʻaʻā lava. When flowing, it …

Mar 26, 2024 · Magma refers to hot, molten, or semi-molten rocks under the Earth’s surface, while lava refers to magma that makes it to the surface. These liquid or semi-solid rocks are made of …

Apr 17, 2022 · Lavas, particularly basaltic ones, come in two primary types: pahoehoe (pronounced ‘paw-hoey-hoey”) and aa (pronounced “ah-ah”). Both names, like a number of …