Friday, April 10, 2009
Mid- Ocean Ridge
A Mid-Ocean ridge is an underwater mountain range, mainly having a valley know as a rift running along its spine, formed by plate tectonics. This type of ocean ridge is a characteristic of what is know as an ocean spreading center, which is responsible for seafloor spreading. The uplifted sea floor results from convection currents which rises in the mantle as magma at a linear weakness in the ocean crust, and emerge as lava,creating new crust upon cooling.A mid-ocean ridge demarcates the boundary between two tectonic plates, and consequently is termed a divergent plate boundary.
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