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Obsidian - Wikipedia ... Obsidian
Volcanism on Io, a moon of Jupiter, is represented by the presence of volcanoes, volcanic pits and lava flows on the surface. Io 's volcanic activity was discovered in 1979 by Linda Morabito, an imaging scientist working on Voyager 1. [1] Observations of Io by passing spacecraft and Earth-based astronomers have revealed more than 150 active ...
Olympus Mons - Wikipedia ... Olympus Mons
Lava - Wikipedia ... Lava
Lunar lava tubes are lava tubes on the Moon formed during the eruption of basaltic lava flows. When the surface of a lava flow cools, it hardens and the lava can channel beneath the surface in a tube-shaped passage. Once the flow of lava diminishes, the tube may drain, forming a hollow void. Lunar lava tubes are formed on sloped surfaces that ...
Volcano - Wikipedia ... Volcano
Mauna Kea - Wikipedia ... Mauna Kea
Gravity spreading is a phenomenon in which a geological body [clarification needed] laterally extends and vertically contracts to reduce its gravitational potential energy. [1] It has been observed on many different scales, and at numerous locations on Earth, from rhyolite lava flows to passive margins. [2] [3] Additionally, gravity spreading ...