EESA06H3 Lecture Notes - Lecture 4: Seismic Tomography, Oceanic Crust, Supercontinent Cycle
Document Summary
Midterm key diagrams are going to be involved (100 multiple choice that uses diagrams in slides) Saturday at end of reading week february 22nd, 2020 (5-7) Wilson cycle explains that how supercontinent breaks away, and comes back again. Rift crust begins to crack relates to east african crack some million years later, it"ll be back to ocean (currently a land mass) Revision: mantle convection as a driver for plate movement, plate structure, and types of plate margins: convergent, divergent and transform. The rock cycle: igneous, metamorphic and sedimentary rock types. Igneous rocks: rocks are formed in the cooling of magma. There"s 2 broad groups (midterm): one contains silica (very brittle). When igneous rocks are made of silica they become stiff: has less silica, but the magma is more fluid (not a lot of explosions) The wilson cycle and the history of oceans :
