Sea Floor Spreading Diagram

Schematic diagram showing the mechanism of seafloor spreading. Terms in this set 9 true or false. Learn vocabulary terms and more with flashcards games and other study tools.

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Lithosphere the crust plus the rigid upper mantle.

Sea floor spreading diagram. At deep ocean trenches conduction allows oceanic crust to to sink back into the mantle. Start studying sea floor spreading 3 2. Spreading rates determine if the ridge is fast intermediate or slow.

The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american. Learn vocabulary terms and more with flashcards games and other study tools. When one tectonic plate moves under another tectonic plate.

Start studying section 4. In seafloor spreading. Learn vocabulary terms and more with flashcards games and other study tools.

Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. The process is continuous because forces cause opposite sides of the midocean ridge to constantly move apart making new room for the process to repeat. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate.

Seafloor spreading is the continuous process of forming new igneous rock at midocean ridges by injection of magma that forms new seafloor. The process of sea floor spreading. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.

Magma molten rock withing the earth s mantle. Start studying seafloor spreading. The rifting processes coinciding with the onset of a new spreading centre typically start with an upwelling of hot mantle rocks under continental lithosphere the heat leading to uplift and associated erosion.