Plates, each plate is moving in. Different directions Results from the moving cause things on the earth's surface. Both on the ground and under the oceans, such as mountains, valleys, mountains, hills, plains, volcanic basins of the motion of the plates is 3
to 1. The plates are separated (Divergent Boundary)
occurs at the boundary between two tectonic plates. beneath the ocean than on the continent, such as the boundaries of the North American Plate and Eurasian plates. The two plates are moving apart. Cause a rift Under the Sea. And molten rock that lies deep to push out the crevices. When exposed to cold will freeze. And petrified new crust And there is a ridge When the plates separated The molten rock it out and push it to harden off to the side. The ocean floor, it will be extended indefinitely. This is why it has a crust that is constantly emerging in the South Atlantic. And apply to North America from Europe split
second. The plates are moving apart Subduction (Convergent Boundary) has 3 is
2.1 oceanic plates collide,
the earth and the ocean moves away from the origin. Crack the plates move away from each other. Propulsion of convection cells (Convection cell) in the asthenosphere. Make two ocean plates collide Figure 1 panels over the earth. A lower temperature Higher density and Be bogged down in the subduction zone. The Trench (Mid oceanic trench) on the earth sank down. Oceanic crust and mantle on the top floor, which has a low melting point is molten magma. Which has a lower density than the mantle in the asthenosphere. It floats up to the surface pressure is a volcanic island arc (Volcanic island arc) aligned parallel to the trench. The limestone formed by marine organisms such as coral carbonate sedimentary low boiling point. When the heat will become carbon dioxide gas. Rise released the crater. The turnover of carbon and nutrient cycles. Example volcanic islands formed by this process include spin Lippi's islands and islands of Japan
2.2. Oceanic plates collide with continental plates
plates ocean is Basalt. Higher density continental plates, which is granite. When two plates collide. The earth will sink into the ocean and melt into magma. Because magma is less dense than the mantle in the asthenosphere. It lifted pressure continental crust into a mountain. A line of volcanoes along the coast Parallel to the trench as shown in Figure 2. Example Mountains raged through this process include Andes. West coast of the South American
continent, 2.3 plates collide
with continental plates over the earth ocean. So when continental plates collide. One sheet will duck down into the asthenosphere. Another piece is picking up stranded. A very high mountain A line parallel to the strike of the image 3. Examples of high mountains formed by this process include the Himalayas. In Nepal, the Alps. In Europe, 3. Boundaries of tectonic plate movement garden (Transform Boundary) on both plates. Roll each other to cause a fault larger. If the plates move against each other and cause a severe vibration and earthquakes occur. But usually not found volcano