EESA01H3 Lecture Notes - Lecture 5: Rock Cycle, Convection, Shortwave Radio
29 Apr 2016
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Document Summary
Snowball earth: when earth was completely covered by ice. Rock cycle rock melt -> molten rock -> cools slows beneath surface intrusive / plutonic igneous large multicolour crystals fast - jested-extrusive or volcanic igneous basalt. Sedimentary all exposed rock wears away through weathering erosion is when the weathered particles carried away by water, wind, glacial ice sediment layers accumulate, pressure increases liti cation. Metamorphic processes that moves the rock around so like bend , uplift, compress. Earth it is layered, the most dense is in the middle this relates to climate; directed impact of tectonics. * under extreme pressure you can get a crystal core * Heat core to crust ; dissipates @ urface drive convection current pushing mantle rock up as it warms, and down as it cools as it moves it drags large plates of brittle lithosphere ( plate tectonics)
