Jiuzhaigou scenic spot in Sichuan Province has returned after the earthquake of magnitude 7.0. As a world natural heritage, Jiuzhaigou affects the hearts of countless people. After seven months of closure and restoration, Jiuzhaigou has been reborn, and the beautiful lakes and mountains remain beautiful. What are the interesting places in Jiuzhaigou now?
The rudiment of Jiuzhaigou: Xiong maohai
Jiuzhaigou is located in the easternmost edge of Qinghai Tibet Plateau and is located in the transitional zone to Sichuan Basin.
400 million years ago, it was still a shallow sea, with direct sunlight on the bottom of the sea, where a large number of paleontology flourished. Day after day photosynthesis, the bones left behind after the death of generations of living things, make an insignificant substance begin to accumulate here for years. This material is calcium. The thickness of Jiuzhaigou will be 4000 meters higher than that of Jiuzhaigou in the future. The thickness of the carbonate will be more than 4000 meters on the surface of Jiuzhaigou.
65 million years ago, the Indian plate began to collide with the Eurasian plate, resulting in the violent uplift of the Qinghai Tibet Plateau. By 3.3 million years ago, the eastern edge of the Qinghai Tibet Plateau had risen to 3000 meters above sea level. A plateau mountain covered with thick carbonate rocks and gentle mountains was born, which is the rudiment of Jiuzhaigou.
Destroyer and creator -- Changhai
At the same time, the God of destruction and creation began to come, and the future of Jiuzhaigou was doomed to turn upside down.
The first destroyer and creator is the glacier. 2.6 million years ago, with the advent of the ice age, global temperatures plummeted. As a plateau mountain, Jiuzhaigou has developed a large-scale mountain glacier. The glacier strongly erodes the mountain peak, and the gentle crust is' destroyed 'by the glacier. Among them, there are three most important peaks, namely, zayizhaga mountain, DAGO mountain and wolosemo mountain. Zayizhaga mountain is 4400 meters above sea level, the peak is sharp and towering, straight into the sky; wolosemo mountain, 4114 meters above sea level, is towering, often surrounded by fog; Dage mountain is 4106 meters above sea level, composed of exposed limestone, the mountain is straight and vigorous.
After the initial denudation of the mountain peak, the temperature rises, the glacier melts, and a greater 'destruction' is brewing. 700000 years ago, the second glacial period came back. The glaciers were larger and cut more fiercely. The flat plateau land was marked with high, deep and wide U-shaped valleys. Today, most of the important valleys in Jiuzhaigou scenic area were created by glaciers at this time. A typical example is zhechawagou, which is about 32 kilometers long. It is the longest ditch in Jiuzhaigou scenic area. The rock walls on both sides are steep, with a slope of 60-90 degrees, and the narrowest point is only 20-30 meters. When viewed from the air, it has the potential of being near the Three Gorges of the Yangtze River.
230000 years ago, the glaciers retreated, and several cirque lakes appeared in the mountains covered with glaciers, such as the Black Lake near zayizhaga mountain. Because the water of the lake is deep, it looks dark under the background of the surrounding snow. Several moraine lakes have been formed in the valleys with lower altitude. The most famous one is Changhai, the largest lake in Jiuzhaigou, with a volume of 46 million cubic meters in wet season When three West Lakes. When such a large lake is formed, it also invades the water of the ancient lake downstream, causing the ancient lake to dry up and disappear. It can be said that there is life and death.
The land eroded by glaciers becomes extremely fragile. A group of more "noisy" destruction and creators than glaciers began to make frequent threats. They were collapses, landslides, mudslides and so on caused by earthquakes and gravity.
210000 years ago, a large number of North and South Mountains of NuoRiLang collapsed, and the collapse and slide materials piled up rapidly. A slightly convex arc-shaped vertical cliff surface was formed at the bottom of the valley. NuoRiLang waterfall, the widest waterfall in Jiuzhaigou, was born. Especially in autumn, the norilang waterfall is set off by the surrounding plants. It is totally impossible to imagine that such a beautiful scenery was born due to the collapse of the mountain and destroyed by the earthquake.
One wave is not smooth, another is rising again -- NuoRiLang waterfall
Jiuzhaigou, which has been destroyed by glaciers, collapses and landslides, has not yet leveled off, but has risen again and again.
160000 years ago, when the third ice age came, the force of flood and famine increased. Not only did the large and small valleys continue to deepen and widen, but also a large number of deposits formed in many places to block the river channels, where water accumulated to form a barrier lake. At this time, the wuhuahai lake, known as the most beautiful lake in Jiuzhaigou, was formed due to the blockage of the river channel by debris flow The bamboo sea in the upper reaches of Huahai is also caused by the same reason.
Lakes formed by early glaciers can not escape the fate of being blocked and destroyed by falling stones. However, the fate is always so strange. After the destruction, the lakes become larger and more beautiful than before. For example, the panda sea has a water area several times as large as before, and its blue color is incomparable with that of sapphire.
There are mountains on both sides of the panda sea. If a mountain collapses, it is very easy to form new weirs and change the current situation of Haizi. Compared with glaciers, collapses, landslides and debris flows, another destruction and creator is water. It is water. A large amount of precipitation has destroyed the carbonate rock stratum under Jiuzhaigou, forming a very strong groundwater system Cracks or holes cut by water can be seen almost everywhere. Water flows into or out of the lava crevices, and the part that flows out of the surface incarnates as beautiful streams and rivers. Lakes are connected along the valleys. The water flow not only replenishes water for the lakes, but also brings important material calcium.
Come back again, beautiful as before
At 21:19 on August 8, 2017, a sudden earthquake of magnitude 7 struck Jiuzhaigou. The originally colorful high mountain lakes collapsed, and the lake water immediately drained and almost dried up. The NuoRiLang waterfall, which used to be hundreds of meters wide and with bead curtain waterfalls, was in a state of disrepair.
It took only one day for Jiuzhaigou to fall from the fairyland to the mortal world. The change was so rapid that people were either glad to have seen the scenery of Jiuzhaigou or regretted that they had not been there. But with the passage of time, Jiuzhaigou showed a strong self purification ability. Two weeks after the earthquake, most of Haizi returned to blue, and there was more water in the waterfall.
Two weeks after the earthquake, they came back again after the earthquake! Let us have to marvel at nature's miraculous self recovery ability.
The peaceful Changhai is like a jade belt across the mountains of Jiuzhaigou. As the quintessence of Jiuzhaigou lake, wucaichi lake will appear again in the lake water rich in calcium carbonate after the debris of rocks are precipitated to the bottom of the pond.
The rhinoceros sea is the second sea in Jiuzhaigou. After restoration, the blue lake water is like a long sapphire spread on the earth.
As one of the locations of the 1986 TV series journey to the west, the water flowing down the Pearl Beach waterfall forms the largest travertine waterfall in Jiuzhaigou. Thousands of water drops are shining in the sunlight.
After Haizi recovers slowly, through the crystal clear lake water, we can see two strips of biological travertine reef banks hidden in the sea floor, just like two Jiaolong hiding in the sea, looking forward to the wind.
The tiger sea is deep and quiet, but it contains violence in its silence, and its rebelliousness is hidden in its tranquility. The Shuzheng waterfall, like clouds and snow, is just its sudden burst of vitality and passion.
Shuanglong waterfall
Jinghai, as its name implies. It is like a mirror, which copies the scenery on the ground and in the air to the water surface without distortion. In the mirror sea under the sunlight, there is a layer of sparkling water waves on the water surface.
Compared with other big Haizi, jinlinghai is too small, and few people even notice her. But big and small jinlinghai, like two sisters, once again ushered in their beauty.
On March 8, this year, Jiuzhaigou scenic spot opened to welcome visitors. As a world natural heritage, Jiuzhaigou affects the hearts of countless people. After seven months of closure and restoration, Jiuzhaigou has been reborn, and the beautiful lakes and mountains remain beautiful.
Spark sea and NuoRiLang waterfall, which are greatly affected by the earthquake, basically maintain their appearance after the earthquake. The earthquake caused the spark sea to burst and merge with the downstream Shuanglong sea, forming a new waterfall, shuanglonghai waterfall. This is the only newly added waterfall in the open landscape after the earthquake. After 400 million years of growth, while destroying and creating, there is no power to stop the rapid development of Jiuzhaigou. Naturally, an earthquake cannot 'destroy' the beauty of Jiuzhaigou.
In the future, Jiuzhaigou will be as pure as the sea, as dreamlike and as colorful as ever. We may not have a chance to see its charm, because its natural restoration can be as short as a few years, but as long as it has gone through generations and hundreds of generations of people, although this is still a short time in geological history.