How deep is the Mariana Trench?

The deepest point of Mariana Trench is11034m, which is the deepest point on the earth.

The Mariana Trench is located at1120 ′ north latitude and14211.5 ′ east longitude, that is, the bottom of the Pacific Ocean near the Mariana Islands in the northeastern Philippines, between the Asian continent and Australia, starting from Iwo Jima in the north and reaching Yap Island in the southwest.

There are trenches such as Aleutian, Thousand Islands, Japanese and Kogasawara in the north, and trenches such as New Britain and New Hebrides in the south, with a total length of 2,550 kilometers and an arc shape, with an average width of 70 kilometers, and most of them are more than 8,000 meters deep.

The deepest point is in Fizez Haiyuan,11034m, which is the deepest point on the earth.

It is estimated that this trench has been formed for 60 million years, and it is part of a series of trenches under the western Pacific Ocean.

Mariana Trench is located in the western part of the North Pacific Ocean east of Mariana Islands. It is an arc-shaped depression on the seabed, extending 2550 kilometers with an average width of 69 kilometers.

There is a small and steep valley at the bottom of the main ditch. 1957, the Soviet survey ship measured the depth of 10990 meters, and then there was a new record of 1 1929 meters.

1960, the U.S navy used the "Trieste" deep-sea submersible made in France, creating a record of diving into 109 1 1 meter trench.

It is generally believed that the ocean plate collided with the continental plate. Because of the high density of rocks and the low position of the ocean plate, it sneaked under the continental plate and gradually melted and disappeared after entering the mantle.

Trenches will form where collisions occur, and island arcs and coastal mountains will often form near the mainland. These places are all areas with strong geological activities, which are manifested by volcanic eruptions and earthquakes.

References:

Mariana trench, expert contribution