How was the Yarlung Zangbo Grand Canyon formed?
How was the Yarlung Zangbo Grand Canyon formed? Let us start with the Brahmaputra River. The Brahmaputra River originates from the Jiemayangzong Glacier at the northern foot of the Himalayas. It is the highest international river with a total length of 2,057 kilometers in our country. It runs parallel to the Himalayas from west to east, passes through the central and southern regions, and bypasses Namjaba. The river flows thousands of miles, and after entering the Indian plains, it is called the Brahmaputra River. It flows through Bangladesh and joins the Ganges River, and finally flows to the Bay of Bengal in the Indian Ocean. The Brahmaputra River is of great significance in geological scientific research. This river that develops along the geological structure is actually a suture zone connecting the Eurasian plate and the Indian plate. In the distant geological era, there were two ancient land masses separated by tens of thousands of miles of ocean. Due to the movement of the earth's interior, the plate where India is located broke away from its parent body near the Antarctic and drifted northward. When it collided with Eurasia, the ancient ocean disappeared, and the connecting line developed the Brahmaputra River. To this day, the internal movement of the earth is still continuing, and the Indian plate is still advancing northward. As the forefront, the Grand Canyon area has penetrated deeply, deeply wedged the land from the south into the Eurasian plate. During the strong uplift of the Tibetan Plateau, , the river continued to deepen, forming a unique grand canyon.
Correspondingly, there is a peak at the western end of the Himalayas. The ninth highest peak in the world, Nanga Parbat, with an altitude of 8,125 meters; there is also a peak surrounding Nanga Parbat. The big bend in the river is a branch of the upper source of the Indus River. Based on the same geological structure, the two ends of the Himalayas are symmetrically formed with mountains, rivers and gorges, forming a natural geographical wonder. These two peculiar mountains, which geologists call "geon knots", are like two golden nails, embedding the Indian plate on the Eurasian plate.
Briefly describe the reasons for the formation of the Yarlung Zangbo River Grand Canyon
External forces - mainly the erosion of flowing water, internal forces are also an important reason.
The reasons for the formation of the Brahmaputra Grand Canyon
In the Quaternary Period, there was a green channel extending to the southeast along the Brahmaputra and Brahmaputra River valleys. The Brahmaputra Grand Canyon is an important part of this green channel. The deep Yarlung Zangbo Grand Canyon is like a green portal in the southeastern part of the Tibetan Plateau, facing the Bay of Bengal and the Indian Ocean, providing a natural channel for warm and moist airflow from the Indian Ocean.
Why is the Yarlung Zangbo Grand Canyon a dormitory for water erosion and glaciers?
First of all, the origin of the Yarlung Zangbo River is high, and its main water comes from melted ice and snow, resulting in water erosion. , Secondly, its terrain is high and the temperature is low, so water easily freezes, causing glacier erosion.