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Exploring Planetary Volcanism in the Solar System

Discover the diverse volcanic features across celestial bodies like Mars, Venus, Mercury, and Io, from shield volcanoes to extensive lava flows. Learn about potential cryovolcanism on Titan and the mysterious volcanic activity on the Moon. Unravel the scientific observations and evidence pointing to significant volcanic processes shaping these planetary landscapes.

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Exploring Planetary Volcanism in the Solar System

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  1. Planetary Geology 102 Planetary Volcanism

  2. Planetary Geology 102 • The Moon • plains volcanism, broad shield volcanoes • Mars • large shield volcanoes, smaller cones, plains volcanism • Venus • large shields, coronae, arachnids(?) • Mercury • pits, intercrater plains, smooth plains • Io • low shields, extensive lava flows, paterae, visible eruptions

  3. The Moon • Extensive lunar “maria” (31% of nearside) • Also evidence of discrete sites of volcanism • Many enigmatic sinuous rilles

  4. The Moon

  5. Mars • Long history of volcanic activity • Three primary sites (provinces) of volcanism • Plains volcanism also appears common

  6. Elysium province Tharsis province Circum-Hellas volcanic province Mars

  7. Mars

  8. Mars

  9. Mars

  10. Mars

  11. Mars

  12. Mars

  13. Venus • 80% of the surface is volcanic plains • Shield volcanoes + pancake domes + “ticks” • Crater counts indicate periodic resurfacing

  14. Venus

  15. Mercury • Extensive plains units, possibly volcanic • Spectroscopic evidence for volcanism • Potential intrusive activity

  16. Mercury • Extensive plains units, possibly volcanic • Spectroscopic evidence for volcanism • Potential intrusive activity

  17. Mercury

  18. Io • Most volcanically active in the Solar System • Heat source from tidal flexing • Shields, pits, lava flows, paterae

  19. Io

  20. What aboutnon-silicate magmatism?

  21. Cryovolcanism

  22. Titan • 50% larger than Earth’s Moon • Active methanological cycle • Putative evidence for cyrovolcanism

  23. Titan

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