![]() These phenomena appear to confirm recent volcanic activity on Venus (Herrick and Hensley, 2023).Īge of Earth: Current estimates indicated ~4.5 billion years (4.5 Ga). Possible new lava flows were also identified. ![]() Two types of energy source were used: thumpers triggered by small explosive charges, and explosives lobbed a few 100 metres from the stations by grenade launchers.Īctive volcanism on Venus: Images obtained by the Magellan spacecraft between 19 reveal a change in shape of a vent on Maat Mons, one of the largest volcanoes on Venus. The method was used for the first time on another planetary body during Apollo missions 14, 16, and 17. Lunar-derived achondrites have identical mineralogical and geochemical compositions to lunar rock samples collected by the Apollo missions.Īctive seismic experiments: Use of artificial sources of seismic energy are common practices for Earth bound seismic investigations. Achondrites derived from asteroid collisions with Mars and the Moon have been found on Earth. Mineralogically, they contain pyroxenes, olivines, Ca-rich plagioclase, traces of other silicates, and FeNi Kamacite. Hence, they are more like many basic and ultrabasic Earth lithologies. Some terminology for planetary geology, the solar System, moons, asteroids, comets, meteorites, exploration, measurement, and related topics.Īchondrites: This group of meteorites lacks chondrules and has igneous textures and compositions that indicate a degree of magmatic differentiation and metamorphism, having formed on all manner of bodies such as planets, moons, and asteroids. Jupiter’s moon Io – the only body in our solar system, other than Earth, to show active volcanism
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