The Pacific plate is subducting into the Eurasian plate, why is there no towering mountain range in

According to scientists' research, about 100 million years ago, the Qinghai-Tibet Plateau, now known as the roof of the world, was a rough ocean, and later due to the movement of the plate, about 100 million years ago, the Indian Ocean plate moved to the Eurasian plate at a relatively fast speed and collided violently, and the Indian Ocean plate subducted to the bottom of the Eurasian plate, making the surface of the collision area appear strong fold fracture and uplift, and with the continuous northward movement of the Indian Ocean plate, the Qinghai-Tibet Plateau was formed under the long geological action.

Although they are also plate movements, the Pacific plate collides with the Eurasian plate, and the Pacific plate is also subducted under the asthenosphere flow, but because the density of the Pacific plate is higher than that of the Eurasian plate, the tilt angle of the Pacific plate subduction to the Eurasian plate is significantly greater than that of the Indian Ocean plate subduction to the Eurasian plate, which makes this boundary open and crack, and the ocean basin sinks, so that the continental plate edge folds to form an island arc chain, and the ocean plate edge forms a trench.

From the plate tectonic map, it is not difficult to see that the Eurasian plate is the most "aggrieved", which is not only squeezed by the African plate and the Indian Ocean plate to the north, but also by the Pacific plate to the west. On the one hand, there are two almost closed belts in the western Pacific and the Mediterranean-Himalayan belt. On the other hand, due to the uplift of the Eurasian plate due to the extrusion, the eastern part of the Eurasian plate was gradually uplifted, and orogeny occurred. At the same time, the southward force of the Eurasian plate is weakened and can only move west-northward, which explains the relatively high terrain in central Asia.

Therefore, it can be said that due to the different actions and directions of forces between the plates, even if the Pacific plate subducts into the Eurasian plate, it is impossible for eastern Asia to have a plateau with an average altitude of more than 4,000 meters like the Qinghai-Tibet Plateau, and it is impossible to form a Himalayan mountain range that stretches for more than 2,400 kilometers and is about 200,350 kilometers wide.

Even if the Pacific plate subducts into the Eurasian plate, it is unlikely that there will be a plateau with an average altitude of more than 4,000 meters in eastern Asia, as in the Tibetan Plateau.

Although the Pacific plate collides with the Eurasian plate, and the Pacific plate is subducted under the asthenosphere flow, the Pacific plate is denser and has higher potential energy than the Eurasian plate.

Because the density of the Pacific plate is higher than that of the Eurasian plate, the potential energy is higher.

It may be that the plates and the earth's crust move in different directions.

Because only Japan has been affected by tectonic plate movements.

Due to the fact that the action and direction of the forces are different between the plates.

Because they are all movements that take place on the seabed, they form mountains on the bottom of the sea.

Because these are all in the ocean, and the movement of the plates takes place in the sea.

Because the forces and directions between the plates are not the same.

Because the moving plates of these seabeds are not the same.

The Eurasian plate and the Indian Ocean plate collide to form the Alps. Generally speaking, the interior of the plate is relatively stable, and the area at the junction of the plate and the plate is more active in the crust of the earth, some of which are split and stretched, and some are collided and squeezed. The Himalayas are located at the junction of the Indian Ocean plate and the Eurasian plate, and are formed by the collision and extrusion of tectonic plates.

According to the theory of plate tectonics, the collision and extrusion of plates can form huge folded mountains, the Alps are located at the collision and extrusion of the Eurasian plate and the African plate, the Himalayas are located at the collision and extrusion of the Eurasian plate and the Indian Ocean plate, the Rocky Mountains are located in the collision and extrusion of the Pacific plate and the American plate, and the Andes Mountains are located at the collision and extrusion of the American plate and the Antarctic plate.

Land: mountain grabens, mountainous areas.

The continental plate as a whole is mostly above sea level, but the local areas on the edge of the plate are below sea level in the form of continental shelves and continental slopes. For example, the sea area between China and the Japanese archipelago generally does not exceed 200 meters, which belongs to the continental shelf sea area, and then the sea area belongs to a part of the Eurasian plate - that is, it belongs to the continental plate. The long and narrow sea area east of the Japanese archipelago and facing the vast Pacific Ocean also belongs to the Eurasian plate.

In this way, the real boundary between the continental plate and the oceanic plate is actually located in the sea, not at the junction of the ocean and the land. This real boundary is the trench. On one side of the trench is a higher land mass, and on the other side is a lower oceanic mass.

In this way, after the collision of the land and the ocean, the lower ocean will subduct below the land mass and remelt and die deep in the earth's crust.

During the subduction of the ocean mass below the continental mass, the continental plate is uplifted, and if the continental shelf, which was originally below the sea surface, is partially lifted and finally exposed intermittently, an island arc is formed. For example, the Kuril Islands, the Japanese Islands, and the Philippine Islands formed by the collision of the Eurasian plate and the Pacific plate.

If the part of the continental plate that was originally above sea level is also lifted, the Coast Range is formed. For example, the Rocky Mountains formed by the collision of the Pacific plate and the American plate, and the Andes Mountains formed by the collision of the Antarctic plate and the American plate.

The largest of the six plates is the Eurasian plate.

There are six major plates, arranged in order: the Eurasian plate, the American plate, the African plate, the Pacific plate, the Indian Ocean plate, and the Antarctic plate.

The specific division of the six major plates.

1. Pacific Plate: most of the Pacific Ocean (including the coastal area of Southern California in the United States);

2. Indian Ocean plate: Arabian Peninsula, Indian Peninsula, Australian mainland, New Zealand and most of the Indian Ocean;

3. Eurasian plate: the eastern half of the North Atlantic, Europe and Asia (including Indochina Peninsula, excluding the Arabian Peninsula and the Indian Peninsula);

4. African plate: Africa, the eastern half of the South Atlantic;

5. American plate: North America, the western half of the North Atlantic and Greenland, South America and the western half of the South Atlantic;

6. Antarctica plate: Antarctica and South America sell the Pacific Ocean on the west side.

Extended Information Chun Xian:

1. The dividing line of the six major plates.

Eurasian and African plates, Indian Ocean plates-Alps-Himalayan belt, Brahma-Tibet; the Indian Ocean Plate and the African Plate – the Red Sea; Eurasian and American plates - Bering Strait; Pacific Plate and Eurasian Plate - Deep Ocean Trench in the Western Pacific Ocean - Island Arc Chain; The American Plate, the Eurasian Plate, the African Plate-the Mid-Ocean Ridge on the bottom of the Atlantic; American and Pacific plates, Antarctic plates - Cordillera; (Pacific Plate and American Plate - Rocky Mountains, Antarctic Plate and American Plate - Andes).

2. Plate tectonics.

1. The theory of plate tectonics is proposed on the basis of the theory of continental drift and the theory of seafloor expansion. According to this new theory, the Earth's surface is covered with undeformed and solid plates (crust) that are indeed moving at a rate of 1 cm to 10 cm per year.

2. Since the surface area of the earth is limited, the earth's plates are classified into three states: one is the convergent plate boundaries close to each other; the second is the detached plate boundaries that are far away from each other; The third is the intertwined transition plate boundaries. The plate itself will not be deformed, and the earth's surface activities will occur intensively in these three states.

3. Due to the evidence provided by the "polar movement curve" and the expansion of the seafloor, continental drift is indeed a fact. In 1965, scientists used computers to put together the Earth's continents in exactly their current shapes. In addition, Haiti's topography, location, volcanoes and other active parts are connected into a belt, so the revolutionary insight of "plate tectonics" came into being.

Such an answer is obviously not rigorous, the Pacific plate and the Eurasian plate junction stretches from near the North Pole to the tropical Philippines, and it is impossible to only hit the Taiwan Mountains;

The Eurasian plate is a continental plate, and the Pacific plate is an oceanic plate, and the mutual compression of the two causes the Pacific plate to subduct to the Eurasian plate, which causes the edge of the continental plate to fold and form an island arc chain, that is, the line of Aras ** Island, the Japanese archipelago, the Kuril Islands, the Ryukyu Islands, and the Philippine Islands; At the same time, the subduction of the junction sinks, and the ocean plate edge forms a trench.

This is the basic structure of this type – the island arc chain, the ocean trench, and the island arc chain is often surrounded by mountains, such as Japan and Taiwan.

volcanic ** belt, and some mountain ranges, such as the Himalayas.

A series of volcanic zones.