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Plate Margins - Discuss the characteristic feature produced at plate margins and explain the processes, which give rise to them.

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Introduction

Plate Margins Discuss the characteristic feature produced at plate margins and explain the processes, which give rise to them. In my essay I intend to illustrate and discuss the concepts of plate margins, showing the various type and the land formations that thy produce. The surface of the earth is made up of a thin layer called the crust, which varies in depth depending on whether it's continental or oceanic. This crust is split up in to many sections, which are known as plates, and these plates are moving constantly. There are seven major plates making up the earth crust to day these are the, South American, African, Eurasian, Nazca, North American, Pacific and Indo-Australian. This map shows the various plates and their boundaries. ...read more.

Middle

An example of this is the mid Atlantic ridge where the Eurasian and African plates are moving away form the North and South American plates. Here is a diagram showing the movement of these plates and the land formations they create. Where the two plates have moved apart the magma which takes its place forms a mountainous landscape under the sea with mountains larger than Everest. These mountains can be so big that they can form new land about sea level; Iceland is created in this way and is getting larger all the time from plate movement. The other possibility is that two continental plates could be moving apart. When this happens it creates a rift valley, like in Africa. Section of the crust fall down when the plates move apart creating block valleys over 600m deep in places. ...read more.

Conclusion

Where oceanic plates collide Island arches and volcanoes are formed. This is happening in the area surrounding Japan, where the Eurasian plate is meeting the pacific. The final type of plate margin is the conservative margin. This is where two plates rub against each other. This occurs along the San Andreas Fault by Los Angeles. The diagram shows the motion and factor evolved with this kid of plate movement. The way the world is constructed is due to the movements of the plates, which make up its crust. The way the earth looks now will be different in the future as the plates are constantly moving, and it was this movement that changed the worlds appearance from the single continent Pangea to the way things are today. The landforms that occur at the plate boundaries all contribute and sculpt the way our surface is. ...read more.

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