GEOL 1330 Lecture Notes - Lecture 16: Subduction, Oceanic Crust, East Pacific Rise
20 Jul 2016
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Document Summary
A set of ideas explaining the observed motion of earth"s lithosphere through the mechanisms of subduction and seafloor spreading, which in turn, generate earth"s major feature, including continents and ocean basins. The study of natural remnants magnetization preserved in rocks in order to determine the intensity and direction of the earth"s magnetic field in the geological past. The inner core is solid, made up of nickel and iron. The electrical current, the outer core convert it"s plasma The angle between the magnetic field and the surface is a called the angle of inclination, corresponding with latitude. Earth"s magnetic north pole can be located by two measurements. Angle made between the magnetic field and horizontal. Horizontal angle between magnetic north and true north. Rock record the latitude at which they originated. Rock record the location of the magnetic poles at the time of their formation. The apparent migration of the magnetic poles through times.
