What Is the Growth Plate?

Plate (plate) is the concept put forward by plate tectonics. According to the theory of plate tectonics, the lithosphere is not a single piece, but is divided into many pieces. These large rocks are called plates. There are also sub-small sections in the plate. Plates are in constant motion, and various mechanisms of magmatic activity, mineralization, earthquakes, etc. occur in tectonic parts of different properties. Because of the correspondence between plate movements and the above-mentioned geological phenomena, plate tectonics can be used to explain the formation of world volcanoes and seismic zones, the distribution of mineral resources, and the formation of geographical features.

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Main points

Le Pichon divided the global crust into six major plates in 1968; the Pacific Plate, the Asia-Europe Plate, the African Plate, the American Plate, the Indian Ocean Plate (including Australia), and the Antarctica Plate. Except that the Pacific plate is almost all marine, the other five plates include both the continent and the ocean. There are eight major segments in the world:

Eurasian plate

Eurasian Plate-Eastern half of North Atlantic Ocean, Europe and Asia (except Northeast Russia, Northern Japan and India).

African Plate

African Plate-Africa, the eastern half of the South Atlantic, and the western side of the Indian Ocean.

Indo-Australian plate

Indo-Australian plate-India, Australia, New Zealand and most of the Indian Ocean.

Pacific Plate

Pacific Plate-Most of the Pacific Ocean (including the Southern California Coast Area).

Nazca Plate

Nazca Plate-Close to the eastern side of the Pacific Ocean in South America.

North American Plate

North American plate-North America, northeast Asia, the western half of the North Atlantic and Greenland.

South American Plate

South American Plate-South America and the western half of the South Atlantic.

Antarctic plate

Antarctic Plate-Antarctica and the Southern Ocean.

In addition, there are at least 20 small plates, such as the Arab plate, the Cox plate, and the Philippine Sea plate. Earthquakes occur very frequently at the plate boundaries, and the epicenter of the plate can be clearly seen where the boundaries of the plates are.

Plate movement

The boundaries between the plates are mid-ocean ridges or ridges, deep trenches, transition faults, and ground sutures. The ridges mentioned here generally refer to the mountains on the ocean floor. There is a seismically active ridge between the Atlantic Ocean and the Indian Ocean, otherwise known as the mid-ridge, consisting of two parallel ridges and a mid-gorge. The Pacific Ocean also has seismic ridges, but it is not in the middle of the ocean, but rather to the east. It is not rugged. There are no two rows of ridges separated by a middle canyon. It is generally called the Pacific Mid-Range. The ridge is actually a zone where the bottom of the ocean is divided into new crusts. A transition fault is a mid-ocean ridge cut into small sections by many transects. It is not a simple translational fault, but splits on both sides and horizontal displacement occurs on the side. It is a fault of another nature, which Wilson calls For transition faults. The two plates collided, and the contact zone was squeezed and deformed to form a fold mountain. The two separated continents were stitched together, called a ground suture. Generally speaking, within the plate, the crust is relatively stable, while the plate-plate boundary is a zone where the crust is relatively active. Here, volcanoes, seismic activity, and faults, squeeze folds, magma rise, and crustal subduction occur frequently.