GEOL 212 Lecture Notes - Lecture 10: Atmospheric Pressure, Basalt, Cryovolcano
26 Dec 2017
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A colder earth, therefore would experience: taller plinian columns and lava flows that cooled somewhat more quickly. On a warmer earth: plinian convection would be somewhat weaker, lava flows might travel considerable distances. Cryovolcanism: all of the parameters we have considered apply to any material that might melt near a planet"s surface regardless of composition. This could easily take the form of cryovolcanism - volcanic activity involving low-temperature magmas of liquid ices including water and ammonia. Indeed, we see many features that seem to result form the eruption of slurries of water, ammonia, and other substances. Active cryovolcanism has been seen on enceladus (right) and triton, and probable cryovolcanic structures are observed on: ganymede (schenk, et al. , 2000. , titan (see lopes et al. , 2013. , miranda and ariel. Cryovolcanoes are subject to same physical constraints as the hotter varieties. In the rough and tumble of the actual solar system, the effects of: magma composition, volatile content, gravity, atmospheric pressure, temperature.
