what is the difference in the angle of subduction between old and new plates?
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Describe the difference in the angle of subduction between old and new plates. The young oceanic crust has a greater angle going into the ground then the old oceanic plate does. ... the transform movement is moving the plates in opposite direction but in a vertical direction.
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The western side is a divergent boundary with the Pacific Plate, forming the East Pacific Rise. The northern side is a divergent boundary with the Cocos Plate, the Galapagos Rise.
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When two plates come together, it is known as a convergent boundary. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench.
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Land locked convergent boundaries are less likely to have subduction zone due to the heavier aggregate bodies. Subduction is more likely in lighter weight minerals like oceanic sands.
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When two oceanic plates collide against each other, the older and therefore heavier of the two subducts beneath the other, initiating volcanic activity in a manner similar to that which occurs at an oceanic-continental convergent plate boundary and forming a volcanic island arc.
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Subduction zones and earthquakes. Subduction zones are plate tectonic boundaries where two plates converge, and one plate is thrust beneath the other. This process results in geohazards, such as earthquakes and volcanoes.
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Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense.
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The deep trenches, volcanic activity, and mountain ranges are formed along convergent plate boundaries and depend on the type of crustal plate involved in the collision. The collision between oceanic crust and continental crust result in the subduction of dense oceanic crust under the less dense continental crust...
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In the case of Andaman and Nicobar Islands, the Indian plate collided with the Burmese plate. About 100 million years ago the Indian plate broke off from Gondwana and started moving Northward and it encountered the Burmese plate and as the subduction occured between the two plates and the islands started rising.
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The major difference between different types is what type of plate the divergent boundary is between. If the boundary is found between two continental plates you are left with a rift valley. ... If two oceanic plates begin moving away from each other it creates a mid-oceanic ridge.
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The Philippine Sea Plate. The Philippine Sea plate is tectonically unusual in that almost all the boundaries are convergent. The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate.
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They also showed that layers of sediment were thinner at the crest and thickened farther out from that area. This showed that new oceanic crust was being formed along the plate boundary and then spreading out laterally, providing evidence to support the theory of seafloor spreading and plate tectonics.
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San Andreas Transform Plate Boundary The transform plate boundary between the Pacific and North American Plates in western California formed fairly recently. About 200 million years ago, a large tectonic plate (called the Farallon Plate) started to subduct beneath the western edge of North America.
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Students figure out: The South American and African plates moved apart as a divergent boundary formed between them and an ocean basin formed and spread. Earth's plates move on top of a soft, solid layer of rock called the mantle.
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New magma steadily emerges onto the ocean floor and intrudes into the existing ocean crust at and near rifts along the ridge axes. The rocks making up the crust below the seafloor are youngest along the axis of the ridge and age with increasing distance from that axis.
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Reverse faults occur at convergent plate boundaries, while normal faults occur at divergent plate boundaries. Earthquakes along strike-slip faults at transform plate boundaries generally do not cause tsunami because there is little or no vertical movement.
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Immediately after subduction started, the subduction zone began moving north, pulling the island arc and the Pacific Plate north with it. This northward migration continued from 80 to 50 million years, at which time the Emperor Chain was formed by the northern drift of the Pacific over the mantle plume.