Changbai Mountain is covered with snow and ice.
There is a strong wind under Changbai Mountain.
Iron shoes make people thirsty,
Xian shan Huai gu Chen Ziang
Feed the horses to the suburbs and climb to the ancient city of Xiangyang.
Still sad because of tears, but also remembered Zhuge Liang's big platform.
The city is divided into Chu from here, and the mountains and rivers are half in the south of Wu.
Hills suddenly appeared on the plain, and the sages almost died of apoptosis.
The trees in the field were broken in the misty smoke, and the ferry building lost its father in the evening.
Who knows that I am a long journey, and the memory of the ancient past is hesitation.
You Bo Hua Luo Ge Cen Can
Baishan South, Chishan North.
In the meantime, some people don't know that the green stems and leaves are good in color.
Six leaves and nine rooms.
How fragrant the night is, why not give birth to China and the West?
Move your roots to court to flatter me.
Shame is associated with grass, which is elegant and unique.
Why not be rewarded by others? The poor ravine Committee was severely frosted.
I secretly lament that the road to Yangguan is long and I am not allowed to offer the king.
changbaishanmai
Changbai Mountain Range is the birthplace of Yalu River, Songhua River and Tumen River. It is the birthplace of Manchu in China and the sacred mountain of Manchu culture. Changbai Mountain's word "Changbai" also has a beautiful meaning, that is, being together for a long time and growing old together represents people's yearning and praise for loyalty and happy love.
The total area of Changbai Mountain range is 1964 square kilometers, and the core area is 758 square kilometers. The highest peak of Changbai Mountain system is General Peak in North Korea, with an altitude of 2749 meters. Bai Yunfeng, the highest peak in China, is 269 1 m above sea level, which is the highest peak in Northeast China.
Changbai Mountain in a broad sense refers to the main peak and vein of Changbai Mountain, that is, Changbai Mountain including the main peak. Changbai Mountain in a broad sense refers to the eastern mountainous areas of Liaoning, Jilin and Heilongjiang provinces in China, as well as the Russian Far East and the Korean Peninsula. In a narrow sense, Changbai Mountain is located in the southeast of baishan city, between east longitude127 40' ~12816' and north latitude 4135' ~ 42 25', which is the boundary mountain between China and North Korea. [ 1]?
The vertical landscape of vegetation and volcanic landform in Changbai Mountain are the first national natural heritages listed in the Preliminary List of National Natural Heritage and National Natural Cultural Heritage in China. In 20 10, it was successively identified as the first batch of national nature reserves, the first batch of national 5A-level tourist attractions, the United Nations "Man and Biosphere" nature reserve and the international A-level nature reserve. Changbai Mountain and its Tianchi Lake, Waterfalls, snow sculpture, Linhai, etc. Was selected as the most recorded in the Guinness Book of World Records [2]? Among them, the top ten famous mountains in China [3]? China has five lakes and ten forests [4]? . Changbai Mountain has outstanding universal value, excellent natural quality and rich cultural connotation in ecology, biology, geology and history.
geological structure
In about 25 million years, Changbai Mountain has experienced four volcanic eruptions. Basalt magma starts from the upper mantle, rises along the huge cracks in the earth's crust, and spews out of the surface with great energy. Magma with strong impact will eject protolith and pre-solidified rock, volcanic ash, water vapor and so on. Into the air, and then fall around or on one side of the crater under the action of gravity and wind, accumulating into various volcanic landforms. Because of the low viscosity of basaltic magma, it flows faster and longer on the surface, forming a vast basalt platform. The bases of the main peaks of Changbai Mountain, such as Nangang Mountain, Changhong Mountain and Yingbi Mountain, which are distributed in the northwest of Changbai Mountain area, are all basalt platforms formed in this period.
Before the volcanic eruption, the surface of Changbai Mountain was generally flat. About 2.77 million years ago, with Changbai Mountain as the center, there was a big gap in the earth's crust, which led to the earliest volcanic eruption and formed basaltic lava platforms, which are now Changbai Mountain Lava Platform and Baimao Lava Platform. The lava is 50-300m thick and covers an area of1.5000 square kilometers. At that time, there were lava vents in Changbai Mountain. They are all located at the top of the shield platform, which is higher than other places. Later, volcanic activity was interrupted for a time, and a second volcanic eruption occurred 580 thousand years ago, which made alkaline trachyte with high viscosity accumulate near the center of Changbai Mountain. The total thickness of the rock layer exceeds 896.78 meters. About 440 thousand years ago, the third volcanic eruption was alkaline trachyte, which was very viscous and difficult to move far away, and could only be newly accumulated on the original trachyte. The thickness of rock stratum reached 1 1 1 m, 210 million years ago, the alkaline trachyte accumulated again, and the thickness reached196 m. At the end of that volcanic eruption, the crater subsided to form Tianchi.
reference data
Baidu Encyclopedia: /item/ Changbai Mountain /2284 126? Aladdin & Ampfromid = 9596 & from title =% e9% 95% BF% E7% 99% BD% E5% b1%b1