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If plate tectonics stopped, the continents would stay in place rather than moving slowly around the face of the earth. This would also result in a reduction in volcanic activity and earthquakes. Lower volcanic activity c... More »

www.reference.com Science Earth Science Plate Tectonics

The Earth's crust is made up of a number of plates that sit on top of the mantle, which is made up of molten rock. The movement of these plates is called plate tectonics. Plate movement can, over time, cause mountains to... More »

www.reference.com Science Earth Science Plate Tectonics

Tectonic processes create new sediments as plates collide, move sediment as one plate slips past or overrides another, and ultimately transform sediment by accumulation or volcanic activity. Ocean sediments transfigure b... More »

www.reference.com Science Earth Science Plate Tectonics
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Andrew Alden of About explains that Australian geologist Sam Carey's theory of Earth expansion, the idea that the continents fit together properly only on a formerly smaller Earth, once rivaled the theory of plate tecton... More »

www.reference.com Science Earth Science Plate Tectonics

Very slow currents in the relatively plastic lower mantle, or aesthenosphere, are thought to push the crustal plates along and drive the process of plate tectonics. These currents are caused by convection, with the mantl... More »

www.reference.com Science Earth Science Plate Tectonics

The theory of plate tectonics, formerly known as continental drift, is a working model that describes the movement of the continents and sea floor across the surface of the Earth. The theory explains many anomalous facts... More »

www.reference.com Science Earth Science Plate Tectonics

Plates move because of gravity, which is the main driving force behind plate tectonics. Another reason why plates move is due to convection. More »

www.reference.com Science Earth Science Plate Tectonics