How is the Yellow River formed?

Question 1: How did the Yellow River come from? The Yellow River originates from the Yogu Zonglie Basin at the northern foot of Bayan Kara in Qinghai Plateau, meanders eastward, crosses the Loess Plateau and the Huanghuaihai Plain, and flows into the Bohai Sea. The total length of the main stream is 5,464 kilometers (1 Wanduoli), and the water level drop is 4,480 meters. The total basin area is 795,000 square kilometers (including 42,000 square kilometers of internal flow area). Overview of the Yellow River Basin starts from Bayan Kara in the west, reaches Bohai Sea in the east, Qinling Mountains in the south and Yinshan Mountain in the north, with a basin area of 752,000 square kilometers. The Yellow River originates at the northern foot of Bayan Kara on the Qinghai-Tibet Plateau, flows through nine provinces and regions including Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan and Shandong, and joins the Bohai Sea in Kenli County, Shandong Province, with a total length of about 5400km. From Heyuan to Tuoketuo, Inner Mongolia, most areas above the upper reaches and Lanzhou have good vegetation coverage; There are many canyons in the main stream from Maduo to Qingtongxia, and there are abundant hydropower resources. Below Qingtongxia is the Hetao Plain, where irrigation and shipping are developed. Tuoketuo to Taohuayu in Henan Province is the middle reaches, and there are also abundant hydropower resources. The banks of the Yellow River are the Loess Plateau, with scarce vegetation and serious soil erosion, which is the main source of flood and sediment in the Yellow River. Taohuayu is downstream from the estuary, and most banks have built dikes. Due to sediment deposition, the riverbed is generally 3 ~ 5m higher than the ground on both banks, numbered as 10m, so it is called suspended river. There are many irrigation areas along the coast, and the main stream is also navigable. Near the estuary, the Yellow River's waterway into the sea is continuously silted, extended and diverted, which has a strong role in reclamation. There are ten tributaries with a basin area of more than 65,438+000 km, of which the Weihe River has the largest area and water volume.

Question 2: What is the reason for the formation of the Yellow River? Between 3 million years ago and 6,543,800+6,000 years ago, the Qinghai-Tibet Plateau experienced three uplifts, of which the strongest and most violent uplift occurred around 6,543,800+6,000 years ago. In a violent uplift, the Qinghai-Tibet Plateau jumped out of the ground, and the edge of the block was fractured and folded, forming a stepped landform, and the originally widely distributed lakes gathered into rivers. If the time scale is shortened, the plateau uplift and the formation of the Yellow River experienced a quiet and slow process of land uplift, and then landslides and ground fissures suddenly occurred, and a huge land jumped out of the surface and a big river composed of lakes rushed down.

According to scientists, before the formation of the Yellow River, the altitude of Qinghai-Tibet Plateau and Gansu was very low. Internal water system was widely developed in Gansu quasi-plain, but its flow direction was different, and the intersection of land and sea was near Sanmenxia today. About 160 years ago, it was a period of great changes in geological structure, and the fault undulation was enhanced by pulse. Ancient lakes and lakes have been cut down, forming a vast river, with thousands of streams gathering and surging, forming a big river across the canyon and becoming the second largest river in the motherland today-the Yellow River.

Question 3: How is the Yellow River formed? To put it simply, the gestation, birth and development of the Yellow River are controlled by geological processes in geological historical periods, with tectonic movements caused by crustal changes as external forces and self-generated scouring, transportation and accumulation as internal forces under hydrogeological conditions. In the historical process of becoming a river, it keeps moving forward and keeps pace with the times. Soil erosion in the Loess Plateau and sediment deposition in the lower reaches of the Yellow River began in prehistoric geological times, and have been increasingly influenced by human activities since then. According to various studies, the ancient Yellow River has three stages of development: the early Pleistocene from Tertiary to Quaternary is the gestation period of the ancient Yellow River. The middle Pleistocene in Quaternary (110.5 million years ago) was the birth period of the ancient Yellow River. In the late Pleistocene (654.38+ 10,000 years ago ~ 654.38+ 10,000 years ago), the Yellow River formed a marine water system.

In the historical period, the Yellow River has also evolved in the upper and middle reaches of the plain, and some of them have changed greatly. For example, the Hetao reach in Inner Mongolia, below Dengkou before 1850, is mainly divided into two tributaries, the northern branch is the mainstream, the Wu Jia at the foot of Yinshan Mountain, and the southern branch is the present Yellow River. 1850, the downstream of Wu Jia, north of Xishanzui, was blocked and cut off for about 15 km, and the south branch became the mainstream, while the north branch became the backwater channel of Houtao Irrigation Area. The river from Longmen to Tongguan also fluctuates greatly. However, the evolution of these reaches has little influence on the development of the whole Yellow River. The changes of the Yellow River mainly occur in the lower reaches.

Historically, the rivers in the lower reaches of the Yellow River changed from Haihe River in the north to Jianghuai River in the south. According to historical documents, the lower Yellow River burst 1500 times and changed its course more than 20 times.

Question 4: How the Yellow River was formed is a profound question. ...

Here are some materials that should be helpful to you.

Chinese geographical scientists discovered the highest terrace of the Yellow River near Lanzhou for the first time, which confirmed that the Yellow River had been formed for 6,543,800 years.

The terrace of the Yellow River is a stepped landform phenomenon formed after the uplift of the Qinghai-Tibet Plateau. It is precisely because of the appearance of these terraces that the Yellow River can gather from the original great lakes on the ground to form a magnificent river. So scientists say that the Yellow River, like a living textbook, is the most powerful geological basis for investigating the history of the Yellow River.

Last year, scholars from the Department of Geographical Sciences of Lanzhou University discovered a first-class terrace in Jiuzhoutai, Lanzhou, which is regarded as the highest terrace of the Yellow River so far. It is 100 meters higher than Jiuzhou Station, and the paleomagnetism research is 65438+ ten thousand years earlier than Jiuzhou Station. 400 meters above it, no other river erosion sediments were found. Therefore, it can be determined that the age of the Yellow River is not earlier than 6.5438+0.7 million years, but 6.5438+0.6 million years.

According to Professor Li Jijun, in the early days of the formation of the Yellow River, the altitude of Qinghai-Tibet Plateau and Gansu was very low, and internal water systems were widely developed on the "quasi-plain", but the water systems flowed in different directions. At that time, the North China Plain was the location of ancient oceans, and seawater could reach the vicinity of Sanmenxia today. The formation of the Yellow River has roughly gone through three stages: 3.2 million to 3 million years ago, the planation plane of the Yellow River developed, the red basin developed greatly, the altitude was below 1000 meters, the landform fluctuated weakly, and rivers and lakes alternated; About 2.47 million years ago, the planation plane disintegrated, and the altitude of the plateau increased obviously, about 2000 meters above sea level, and the mountain ups and downs increased, forming a new lake landform; The third stage was about 6.5438+0.6 million years ago, which was a period of great changes in geological structure. The ups and downs of faults are enhanced in pulses, and ancient lakes are cut to form vast rivers. Wanxi flows together, forming a big river across the canyon and becoming the second largest river in China today. At this time, the Yellow River ends in Yinchuan Basin. The era when rivers and lakes are widely distributed on the plain is finally over. After the formation of the Yellow River, a large amount of sediment was deposited downstream every year, forming a fertile North China Plain. Therefore, it can be said that the uplift of the Qinghai-Tibet Plateau created the Yellow River, which in turn created the North China Plain.

Question 5: How is the zigzag of the Yellow River formed? The Yellow River is the second longest river in China, second only to the Yangtze River, with a total length of 5,464 kilometers. It zigzagged through Qinghai, Sichuan, Gansu, Ningxia, Suiyuan, Shaanxi, Shanxi, Henan and Shandong provinces, and flowed eastward into the Bohai Sea, where more than 30 major tributaries and countless streams gathered along the way, with a drainage area of more than 750,000 square kilometers. The middle reaches flow through the vast loess plateau, and many tributaries carry a lot of sediment into it, which is the river with the largest sediment concentration in the world. This river is yellow, hence its name.

The Yellow River originates from the Zhanzonglie Canal at the northern foot of Bayan Kara, Qinghai, with an altitude of more than 5,400 meters, and the surrounding mountains are covered with snow all year round. There is a sea of stars at the source of the Yellow River, which is a swamp of countless small lakes. After leaving Xinghai, enter Eling Lake and Zhaling Lake to Maduo, bypass Jishishan and Xiqingshan, and cross Longyangxia to Guide, Qinghai, with a total length of 1900 kilometers. The upstream section is from Guide to Hekou Town, Suiyuan Province, with a total length of 1500 kilometers. The Yellow River is in Gansu, passing through many grand canyons and gathering many tributaries. The middle reaches from Hekou Town to Yujin, with a total length of 1 100 kilometers. The river flows south through the Loess Plateau, carrying a lot of sediment, rushing down to Hukou, where the terrain is steep, forming Hukou Waterfall, and then passing through Longmen Gorge to Tongguan, the river channel becomes wider, and the water volume increases greatly because of the confluence of Qin Fen, Luohe and Xiaoshui tributaries. When the river reaches Tongguan, it is blocked by Huashan Mountain, turns east, crosses Sanmenxia to Luo Yu, and then enters the plain area. The downstream section flows into the Bohai Sea from Jinmeng to Lijin County, Shandong Province, with a total length of more than 870 kilometers. Due to sediment deposition and slow water flow, dikes are built on both banks and become rivers above the ground.

The headwaters and upper reaches of the Yellow River are the most tortuous, followed by the middle reaches, and the lower reaches are straight. From Lanzhou to Tongguan, the river bypasses a rectangle on three sides, which is the famous Hetao, about 2000 kilometers long. Ancient rivers drifted downstream, sometimes the river flowed into the Bohai Sea in the northern part of Shandong hills, and sometimes it seized the Huaihe River and flowed into the Yellow Sea in the southern part of Shandong hills, with a distance of 500 kilometers.

Historically, the Yellow River has flooded cities. According to records, over the past 2000 years, the lower reaches of the Yellow River have burst its banks 1500 times and changed its course on a large scale for 26 times. The flood-stricken area reaches Tianjin in the north and Jiangsu and Anhui in the south, reaching 250,000 square kilometers. The total amount of sediment carried by river water exceeds1600 million metric tons every year on average. Due to the low terrain, gentle river slope and slow flow rate, a large amount of sediment is deposited on the river bed, with an average of more than 400 million metric tons per year. The rest of the sediment flows to the estuary and alluvial into the estuary delta extending to the sea, with an average of more than 20 square kilometers of land reclamation every year. The Yellow River basin has fertile soil, rich products and magnificent mountains and rivers. Residents account for almost a quarter of the total population of China, while cultivated land accounts for about 40% of the country.

The Yellow River basin is bounded by latitude 32-42 N and longitude 96- 1 19 E, with a difference of latitude 10 between north and south and longitude 23 between east and west. The basin covers an area of more than 752,000 square kilometers, with a total length of 5,464 kilometers and a drop of 4,830 meters from the source to the estuary. Rocky mountain area accounts for 29%, loess hilly area accounts for 46%, sandstorm area accounts for 1 1%, and plain area accounts for 14%. The natural landscape varies greatly from place to place, especially the largest loess plateau in the world, where soil erosion is very serious.

The Yellow River basin belongs to continental climate. Most areas above Lanzhou are semi-humid areas, while those below Lanzhou are arid areas in northwest, humid areas in south and southeast, and the rest are semi-arid and semi-humid areas. Winter is controlled by Mongolian high pressure, prevailing northerly wind, low temperature and little precipitation; In spring, the Mongolian high weakened, and the western Pacific subtropical high began to extend northward and westward, with the temperature rising and precipitation increasing. In summer, most areas are affected by the western Pacific subtropical high, with southerly winds and abundant water vapor, which is the most rainy period in a year; In autumn, the subtropical high in the western Pacific gradually weakened, and the Mongolian high spread southward, and the precipitation began to decrease, but there was often continuous rainy weather. The regional distribution of temperature is characterized by a gradual decrease from south to north and from east to west. The annual average temperature is higher than 14℃ in the highest area and lower than -4℃ in the lowest area. The annual extreme maximum temperature in Luoyang basin is 44.2℃, and the annual extreme minimum temperature in Heyuan area is -53.0℃. The precipitation gradually decreases from southeast to northwest. The area with the largest annual average precipitation for many years is Qinling Mountain, which locally exceeds 900 mm, and the station with the largest annual precipitation is Taishan Peak, reaching 1 108.3 mm; The areas with less annual precipitation are Hangjinhou Banner and He Lin, Inner Mongolia, which are below 150 mm, and the station with the least annual precipitation is Shanba, Hangjinhou Banner, Inner Mongolia, which is only138.4 mm. The rainfall intensity in the upper reaches is small, the duration is long, there are few heavy rains, and the daily precipitation rarely exceeds 50 mm; The rainfall intensity in the middle and lower reaches is relatively high ... >>

Question 6: How is the Yellow River formed? Let's talk briefly about the history of the Yellow River.

The Yellow River is the second longest river in China. Originated in the Yuegu Zonglie Basin at the northern foot of Bayankala in Qinghai Plateau, it winds eastward, crosses the Loess Plateau and the Huanghuaihai Plain, and flows into the Bohai Sea. The total length of the main stream is 5464 kilometers, and the water level drop is 4480 meters. The total basin area is 795,000 square kilometers (including 42,000 square kilometers of internal flow area).

According to the study of geological evolution history, the Yellow River is a relatively young river. In the late Early Pleistocene, 1 15000 years ago, there were only some unconnected lake basins in the basin, each of which formed an independent internal water system. Since then, with the uplift of the western plateau, rivers have been eroded and eroded. After the Middle Pleistocene of 654.38+0.05 million years, lakes and basins have been gradually connected, forming the embryonic form of the Yellow River system. It was not until the Late Pleistocene (654.38+ 10,000 years ago) that the Yellow River gradually evolved into a big river running up and down from the source to the estuary.

Because the flood of the Yellow River carries a lot of sediment, it quickly silts up after entering the downstream plain, and the mainstream wanders in the overflow area, people begin to build dikes for flood control, and the flood channel keeps silting up and rising, becoming an "overground river" higher than the two banks. Under certain conditions, it will overflow the flood and take a new road. The severity of river migration in the lower Yellow River is unique in the world. According to written records, the Yellow River has been diverted many times. The river changes from Zhengzhou in the west, Tianjin in the north and Jianghuai in the south, covering an area of 250,000 square kilometers. During the period from the 5th year of Zhouding (602 BC) to the 2nd year of Jianyan in the Southern Song Dynasty (1 128) 1700, the migration of the Yellow River was mostly in the area north of the present river, invading the Haihe River system and flowing into the Bohai Sea. During the 700 years from 1 128 to 1855, the Yellow River oscillated in the south of the current channel, invaded the Huaihe River system and flowed into the Yellow Sea. 1855, the Yellow River burst at Dongbatou, Lankao, Henan Province, and later diverted to capture the Daqing River in Shandong Province and enter the Bohai Sea. Due to the constant change and diversion of the lower reaches of the Yellow River, as well as the influence of transgression and regression, the length and basin area of the lower reaches of the Yellow River are also constantly changing, which is one of the outstanding characteristics that distinguish the Yellow River from other rivers. The middle and lower reaches of the ancient Yellow River had a mild climate and abundant rainfall, which was suitable for primitive human survival. The loess plateau and the alluvial plain of the Yellow River have loose soil and are easy to cultivate, which is suitable for developing primitive agriculture and animal husbandry. The characteristics of loess are beneficial for our ancestors to dig holes and live together. The special natural geographical environment provided good conditions for the development of ancient civilization in China. As early as 165438+ million years ago, "Lantian people" lived in the Yellow River basin. There are also "Dali people", "Dingcun people" and "Hetao people" living in the basin. Yangshao culture, Majiayao culture, Dawenkou culture, Longshan culture and many other ancient cultural sites are spread all over the country. These ancient cultural relics are not only numerous and complete in variety, but also developing from far to near, systematically demonstrating the development process of ancient civilization in China.

As early as 6000 years ago, agricultural activities began to appear in the basin. About 4000 years ago, some blood tribes were formed in the basin, among which Yan Di and Huangdi were the most powerful tribes. Later, the Yellow Emperor gained the position of leader and merged with other tribes to form the "Huaxia nationality". Later generations regard the Yellow Emperor as the ancestor of the Chinese nation. There is the Huangdi Palace in xinzheng city, Henan Province, and the Huangdi Mausoleum in huangling county, Shaanxi Province. Chinese people all over the world regard the Yellow River Basin as the cradle of the Chinese nation, calling it "Mother River" and "Four Shames", and regard the yellow land as their "root".

From the Xia Dynasty in the 2nd/kloc-0th century BC, in the historical period of more than 4,000 years, the dynasties established their capital in the Yellow River basin for more than 3,000 years. Among the "seven ancient capitals" in the history of China, Anyang, Xi, Luoyang and Kaifeng are located in the Yellow River Basin and its adjacent areas. A large number of Oracle Bone Inscriptions remains in Yindu (which belonged to the Yellow River valley at that time), creating a precedent for written records in China. Xi 'an (including Xianyang), from the Western Zhou Dynasty, Qin Dynasty and Han Dynasty to Sui Dynasty and Tang Dynasty, has 13 dynasties as its capital, and has a history of thousands of years. It is a famous "Eight Rivers Imperial Capital". After the Eastern Zhou Dynasty moved its capital to Luoyang, the Eastern Han Dynasty, the Wei Dynasty, the Sui Dynasty, the Tang Dynasty, Hou Liang and the Hou Zhou all established their capitals in Luoyang, which lasted for more than 900 years and was known as the "ancient capital of nine dynasties". Kaifeng, located on the south bank of the Yellow River, was called Bianliang in ancient times. During the Spring and Autumn Period, Wei Huiwang moved its capital to Daliang, and the capital was established here in the Northern Song Dynasty, which lasted about 200 years. For a long time, the political, economic and cultural center of China has been in the Yellow River Basin. The middle and lower reaches of the Yellow River are the earliest areas for the development of science, technology, literature and art in China. Around 2000 BC, bronzes appeared in the river basin. By Shang Dynasty, the bronze smelting technology had reached a quite high level. & gt

Question 7: How did Hukou Waterfall of the Yellow River form? The rocks around the waterfall are grayish green and red medium-fine grained feldspar complex sandstone and conglomerate mixed with silty mudstone. The stratum belongs to Ermaying Formation, and its geological age is Mesozoic Middle Triassic, about 220 million years ago. Compared with granite and limestone, this feldspar complex sandstone is soft and easy to be weathered and denuded. There are two groups of joints in sandstone. One group is a vertical joint with north-south strike, which controls the waterfall strike. The other group of joints is nearly east-west vertical joints. These two groups of joints and the nearly horizontal strata form three mutually perpendicular planes, and the strata are cut into small pieces, and various cracks crisscross the strata, laying the foundation for rock fragmentation. This stratum structure composed of sandstone and mudstone meets the necessary conditions for forming waterfalls when it reaches a certain proportion. Hejin Longmen is just the only place where the Lishi flexural zone formed at the end of Mesozoic passes, and the Cenozoic superimposed basin edge fault. It caused the high steps of Loki Mountain on the north side of Longmen, and the Yellow River used these high steps to form waterfalls. [

According to historical records, in 770 BC, Hukou Waterfall was next to Mengmen. By AD 8 13 (after 1583), Hukou Waterfall was1660m north of Mengmen, and moved northward1.05m on average every year. According to the annual northward movement of the waterfall 1 m, the formation of the waterfall has a history of 65,000 years.

Hukou Waterfall, National Scenic Area, National AAAA Tourist Attractions and National Geopark. [1] Hukou Town, Jixian County, Linfen City, Shanxi Province is in the east, and Hukou Township, Yichuan County, Yan 'an City, Shaanxi Province is in the west, which is a tourist attraction of the two provinces. 387 kilometers north of Taiyuan, Shanxi; It is located 449 kilometers south of Xi, Shaanxi.

Hukou Waterfall is the second largest waterfall in China and the largest yellow waterfall in the world. In rainy summer, Hukou Waterfall is very spectacular. In winter, the whole water surface freezes, forming a rare huge ice waterfall.

Question 8: How did the Yellow River come from? The Yellow River originates from the Yogu Zonglie Basin at the northern foot of Bayan Kara in Qinghai Plateau, meanders eastward, crosses the Loess Plateau and the Huanghuaihai Plain, and flows into the Bohai Sea. The total length of the main stream is 5,464 kilometers (1 Wanduoli), and the water level drop is 4,480 meters. The total basin area is 795,000 square kilometers (including 42,000 square kilometers of internal flow area). Overview of the Yellow River Basin starts from Bayan Kara in the west, reaches Bohai Sea in the east, Qinling Mountains in the south and Yinshan Mountain in the north, with a basin area of 752,000 square kilometers. The Yellow River originates at the northern foot of Bayan Kara on the Qinghai-Tibet Plateau, flows through nine provinces and regions including Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan and Shandong, and joins the Bohai Sea in Kenli County, Shandong Province, with a total length of about 5400km. From Heyuan to Tuoketuo, Inner Mongolia, most areas above the upper reaches and Lanzhou have good vegetation coverage; There are many canyons in the main stream from Maduo to Qingtongxia, and there are abundant hydropower resources. Below Qingtongxia is the Hetao Plain, where irrigation and shipping are developed. Tuoketuo to Taohuayu in Henan Province is the middle reaches, and there are also abundant hydropower resources. The banks of the Yellow River are the Loess Plateau, with scarce vegetation and serious soil erosion, which is the main source of flood and sediment in the Yellow River. Taohuayu is downstream from the estuary, and most banks have built dikes. Because of siltation, the riverbed is generally 3 ~ 5m higher than the ground on both banks, and the amount is as high as 10m, so it is called suspended river. There are many irrigation areas along the coast, and the main stream is also navigable. Near the estuary, the Yellow River's waterway into the sea is continuously silted, extended and diverted, which has a strong role in reclamation. There are ten tributaries with a basin area of more than 65,438+000 km, of which the Weihe River has the largest area and water volume.

Question 9: What is the reason for the formation of the Yellow River? Between 3 million years ago and 6,543,800+6,000 years ago, the Qinghai-Tibet Plateau experienced three uplifts, of which the strongest and most violent uplift occurred around 6,543,800+6,000 years ago. In a violent uplift, the Qinghai-Tibet Plateau jumped out of the ground, and the edge of the block was fractured and folded, forming a stepped landform, and the originally widely distributed lakes gathered into rivers. If the time scale is shortened, the plateau uplift and the formation of the Yellow River experienced a quiet and slow process of land uplift, and then landslides and ground fissures suddenly occurred, and a huge land jumped out of the surface and a big river composed of lakes rushed down.

According to scientists, before the formation of the Yellow River, the altitude of Qinghai-Tibet Plateau and Gansu was very low. Internal water system was widely developed in Gansu quasi-plain, but its flow direction was different, and the intersection of land and sea was near Sanmenxia today. About 160 years ago, it was a period of great changes in geological structure, and the fault undulation was enhanced by pulse. Ancient lakes and lakes have been cut down, forming a vast river, with thousands of streams gathering and surging, forming a big river across the canyon and becoming the second largest river in the motherland today-the Yellow River.

Question 10: How the Yellow River was formed is a profound question. ...

Here are some materials that should be helpful to you.

Chinese geographical scientists discovered the highest terrace of the Yellow River near Lanzhou for the first time, which confirmed that the Yellow River had been formed for 6,543,800 years.

The terrace of the Yellow River is a stepped landform phenomenon formed after the uplift of the Qinghai-Tibet Plateau. It is precisely because of the appearance of these terraces that the Yellow River can gather from the original great lakes on the ground to form a magnificent river. So scientists say that the Yellow River, like a living textbook, is the most powerful geological basis for investigating the history of the Yellow River.

Last year, scholars from the Department of Geographical Sciences of Lanzhou University discovered a first-class terrace in Jiuzhoutai, Lanzhou, which is regarded as the highest terrace of the Yellow River so far. It is 100 meters higher than Jiuzhou Station, and the paleomagnetism research is 65438+ ten thousand years earlier than Jiuzhou Station. 400 meters above it, no other river erosion sediments were found. Therefore, it can be determined that the age of the Yellow River is not earlier than 6.5438+0.7 million years, but 6.5438+0.6 million years.

According to Professor Li Jijun, in the early days of the formation of the Yellow River, the altitude of Qinghai-Tibet Plateau and Gansu was very low, and internal water systems were widely developed on the "quasi-plain", but the water systems flowed in different directions. At that time, the North China Plain was the location of ancient oceans, and seawater could reach the vicinity of Sanmenxia today. The formation of the Yellow River has roughly gone through three stages: 3.2 million to 3 million years ago, the planation plane of the Yellow River developed, the red basin developed greatly, the altitude was below 1000 meters, the landform fluctuated weakly, and rivers and lakes alternated; About 2.47 million years ago, the planation plane disintegrated, and the altitude of the plateau increased obviously, about 2000 meters above sea level, and the mountain ups and downs increased, forming a new lake landform; The third stage was about 6.5438+0.6 million years ago, which was a period of great changes in geological structure. The ups and downs of faults are enhanced in pulses, and ancient lakes are cut to form vast rivers. Wanxi flows together, forming a big river across the canyon and becoming the second largest river in China today. At this time, the Yellow River ends in Yinchuan Basin. The era when rivers and lakes are widely distributed on the plain is finally over. After the formation of the Yellow River, a large amount of sediment was deposited downstream every year, forming a fertile North China Plain. Therefore, it can be said that the uplift of the Qinghai-Tibet Plateau created the Yellow River, which in turn created the North China Plain.