EART 2 Lecture Notes - Lecture 17: Deformation Monitoring, Lake Nyos, Main Source
Document Summary
Biggest volcano on another planet mars(cid:1442) olympus mons volcano: 24 km high, 550 km wide (vs. biggest volcano on earth mauna loa 9 km height, 120 km wide) Lighter color more silica, more explosive volcanoes. Volcanoes are now, and presumably were the main source of gas. Present atmosphere: 79% nitrogen, 21% oxygen, traces of water, co2, ar, ne. Nitrogen from volcanoes, oxygen from plant respiration. Water, co2, so2, n2, h2s, co, h2, hcl, ch4. Over time mostly water, chlorine, carbon, nitrogen, sulfur much more intense volcanism when planet was young, diminishing rate over time. Eject dust and gases that go high into the stratosphere. Can block incoming solar radiation makes planet cooler. Earth is cooler when lots of eruptions happen. Eruption of pinatubo in (cid:1441)92 years of cooling. Hydrothermal (u. s. potential = 2x world supply of oil) Hot dry rock (u. s. potential = 6000x world supply of oil) Magma reservoirs (u. s. potential = 80x world supply of oil)
