GE CLST 70A Lecture Notes - Lecture 17: Paleomagnetism, Continental Drift, Igneous Rock
23 Jan 2017
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Document Summary
Processes on earth are removing evidence of impacts, modifying the surfaces. Erosion/sedimentation: transport and deposition via water and wind. The combination of these processes shape planetary surface over time. Each process plays a different role depending on the planet and the time period. On earth, expression of all these processes are manifestations of plate tectonics. Plate tectonics seem to be unique to earth in our solar system. Melting of materials within a planet and the transport/eruption of these materials onto a planetary surface. On the terrestrial planets, the molten material is silicate rock (magma) For some outer planet satellites, the molten material is water or sulfur dioxide. The deformation of the surface and/or interior of a planet, driven by internal (heat, gravity) or external (tidal) forces. Tectonic processes produce faults, fractures, and folds with morphologies dependent on the style of local deformation. Erosion: the wearing down of high places on a planetary surface.
