EESA06H3 Lecture Notes - Iceland Plume, Oceanic Crust, Volcanic Ash
Document Summary
Jokulhlaup is a flood caused by volcanic activity underneath ice(glaciers) Pyroplastic to be broken by fire. Slab pulling and slab rollback makes the lithosphere form a trench suction. The volcanoes gets more active when the ice is thinner. Iceland is an oceanic crust that has been dried up. It is a part of the mor and it is both dry land and oceanic crust. Iceland field camp slide the crust is expanding. The medieval warm period before the ice age. The spreading centre, which is above the plume gets cuts off and it dies. The plumes underneath pushes the rocks aside and it gets moved (the plume) The ridge jump is when the old plume dies and a new plume starts off somewhere else. The plumes don"t moves, but the spreading centre is what changes. Pushed by the sources of magma (carrying mid ocean ridges away. ) The eruption of lakagigar (1783) the largest eruption at that time.
