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contiential not drifting but raising

2023-05-18 23:00:32

The skull of dinosaurs excavated 95 million years ago from the riverbed area of ​​the Nadam River in India caused intense debate among researchers. The fossil of the dinosaur was completely inconsistent with the theory of continental drift proposed by German meteorologist Alfred Wagner. According to this theory, all the continents coexisted 200 million years ago and the supercontinent was called Pangea. Then it is divided into two main continents called North Lauracia and South Gone Wana. The theory will continue to explain ...

Continental drift is the theory that the continents of the Earth move relative to each other in geological time, so it seems that it "drifts" through the ocean floor. The speculation that the mainland "drifts" was first proposed by Abraham Ortelius in 1596. This concept was developed independently and more comprehensively by Alfred Wegener in 1912, but his theory was rejected by many people due to the lack of a mechanism of motivation. Arthur Holmes later proposed a mechanism mantle convection. The concept of continental drift was later included in the theory of plate tectonics. It describes the movement of the continent by riding the Earth's lithosphere plate.

Scientists do not accept Wegner 's theory of continental drift. One factor that is theoretically lacking is how it works - Why do the continents drift and what patterns do they follow? Wegener believes that the rotation of the Earth probably moves the continents toward one another and toward each other. During the spread of the ocean floor, the lava rises from the interior of the earth and adds a new seafloor (oceanic crust) to the old ocean floor. Submarine expansion is the most dynamic along the huge underwater mountain called Middle Ridge. As the ocean floor gets wider, the continents on both sides of the ridge are far from each other. For example, North American and Eurasian quarrying plates are separated by the Mid Atlantic Ridge. The two continents are separated from each other at a speed of about 2.5 cm per year.

According to the theory of continental drift, the world consists of continents in most geological times. The continents eventually separated and separated, forming the seven continents we have today. German meteorologist Alfred Wegner in 1912 proposed the first theory of integrated continental drift. The hypothesis is that the continent is made up of lighter rocks made of heavier crustal material - just as the iceberg floats on the water. Wegner believes that the relative position of the continent is not strictly fixed but is moving slowly - about 1 yard per century.