Mikes pp
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Martian volcanoes are larger than Earth volcanoes due to different tectonic plate activity. On Mars, volcanic hot spots remain stationary under the same location, allowing volcanoes like Olympus Mons to grow extremely large. In contrast, most Earth volcanoes form near shifting tectonic plate boundaries. Shield volcanoes form on Mars from stationary hot spots, while stratovolcanoes on Earth erupt explosively from convergent plate boundaries and have steeper profiles.
Mikes pp
- 1. The Hotspots Volcanoes on Mars are much wider and taller than Earths, but have similar ratios of height to base radius
- 2. Formation and Eruption of Martian Volcanoes Mars no longer has active tectonic plate activity Due to no movement of crustal drifting, the volcanic hot spot remains under the same mountain resulting in extremely large mountains, such as Olympus Mons On Mars, shield volcanoes form above volcanic hot spots
- 3. Crustal Magnetism on Mars •Red areas shows the North magnetic fields •Blue areas shows the South magnetic fields
- 4. Shield Volcanoes on Mars Olympus Mons The caldera Tharsis Ridge Ascaraeus Mons Pavonis Mons Arsia Mons
- 5. Tectonic Plate Movement and Formation of Earth Volcanoes Most of Earths volcanoes form near convergent plate boundaries, such as the Pacific Ring of Fire (68% of Earth’s Volcanoes) Earth’s hot spot theory on volcano formation Oceanic divergent plate boundaries Continental convergent plate boundaries Earths “hotspots” Statovolcanoes
- 6. Stratovolcanoes on Earth Stratovolcanoes are known for their steep profile and fluctuations of explosive and quiet eruptions Mount Krakatoa exploded killing nearly 40,000 people in 1883 Mount Vesuvius erupted in 79 A.D. The city of Pompeii and Herculaneum were destroyed by large amounts of ash and pumice
- 7. Citations • Hamilton, C. (1995). Martian volcanoes. Retrieved from http://www.solarviews.com/eng/marsvolc.htm • Tayfun Oner, A. (1997). Retrieved from http://www.solarviews.com/cap/mars/voly1.htm • Greetings from mars. (n.d.). Retrieved from http://abyss.uoregon.edu/~js/ast121/lectures/lec 12.html