CAS ES 144 Lecture Notes - Lecture 14: Dmitri Mendeleev, Combined Gas Law, Continental Drift
18 Jan 2018
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Document Summary
Continental margins: the small area surrounding continents where water depth is significantly less than the oceans due to sediment runoff from rivers. These are also the areas that have the highest densities of marine life. Mid oceanic ridges: contain high densities of marine life, components such as sulfur are utilized by the organisms to survive as opposed to oxygen. This constant movement is a reversal of the dimensional orientation. For example, the magnetic field"s north in theory could be the geographic south. Plates can move and come back together through lateral movement of the ocean"s crust. (harry hess and harry hammond) Continental drift are a part of plate tectonics. Convection cells occur with the mantle, disproving wegner and hess because the continents themselves did not simply sit on oceanic plates. Heat to create the upwelling is generated from the core of the earth. Convection: mid oceanic ridges are created by convection cells in the mantle.
