What is an artesian basin What is the difference between an endoesthetic basin and an outflow basin?

Artesian basin is a kind of inclined basin with confined water storage structure, including a large compound structural basin and a small single inclined structural basin. It is mainly composed of rock formations before the Quaternary. The artesian basin is generally divided into three parts: the recharge area, the confined area and the discharge area.

Sometimes there may be several confined aquifers, each with its own different confined water levels. When the water storage structure is consistent with the topography, it is called positive topography, and at this time, the confined water level of the lower layer is higher than the confined water level of the upper layer. On the contrary, it is called negative terrain, and the confined water level of the lower layer is lower than the confined water level of the upper layer.

When the water level is different, the hydraulic connection between the aquifers can occur through the weak aquifer or fault "skylight", forming a recharge relationship between the aquifers, and the high-water aquifer can recharge the low-water aquifer. Artesian basins are divided into closed artesian basins and open artesian basins according to the degree of closure of the oblique structure. The former is a confined basin with a relatively complete dip structure, with poor groundwater runoff conditions, weak water alternation and increased water salinity.

The latter are often cut by faults or hydrological networks, and confined water is often discharged to the surface along faults or river valleys.

Artesian basin is the bottom of the terrain in a certain area, the surface depression, and the groundwater level in this area is higher than the area, and the water flows to a low place, which is called artesian, which is mostly seen in the obvious place where the surrounding high and the middle is low and the groundwater level is higher than the low area, like the famous large artesian basin in Western Australia.

The difference between an endorheic basin and an outflow basin is that an endorheic basin refers to an area in which no body of water is connected to an outside body of water. With the rise of the earth's crust, the sea and land changes into inland lakes, and the crust continues to rise.

Endorheic basins are generally found in endorheic basins, but the lakes tend to dry up easily and have high salinity. The center of the endorheic basin tends to contain a large amount of minerals, but at the same time the ecosystem.

Fragile and prone to collapse in water pollution. Among the continents of the world, Oceania.

The endorheic basins of North America account for more than 64% of the continent's area.

It's only 10 percent. In general, Antarctica is not included.

18% of the world's total land area is endorheic basins. In most of the Earth's land areas, precipitation flows into the ocean through rivers to complete the water-vapor cycle. In endorheic basins, precipitation leaves the surface completely through evaporation or seepage, and is not connected to the external water system.

A basin where rivers converge into low-lying areas, or accumulate water to form lakes, or disappear halfway, and no rivers flow into the ocean in the form of runoff. The pelvic floor is slightly segmented, and most of it shows plain features. In order to denud or accumulate plains, sand dunes and gravel deserts are widely distributed in areas where the wind and sand are strongly destructed and collapsed.

The topography of the basin is high around the center and low in the center, and the beams are good, but it generally has an opening, that is to say, there is a side with a relatively low terrain. In this way, when the precipitation in this area is large enough, there is an outflow of water, which is formed by long-term erosion and undercutting, or it is possible that the crustal movement was developed from the original lake.

Sichuan basin. It is the largest outflow basin in China. The Sichuan Basin is located in the eastern part of Sichuan Province in the upper reaches of the Yangtze River, surrounded by mountains and plateaus with an altitude of 2000 to 3000 meters, Daba Mountain, Micang Mountain and Longmen Mountain in the north and the Qinghai-Tibet Plateau in the west.

The edge of Qionglai Mountain, Daliang Mountain, south is Da Lou Mountain, east is Wu Mountain.

No matter from the perspective of structure or human landform, the Sichuan Basin is a typical basin. It has been a relatively stable large-scale depression area of the earth's crust since the Sinian period. It became an inland lake basin during the Indosinian movement of the Late Triassic, but it was much larger than the Sichuan basin today, and the Mesozoic accumulated purplish-red sandstone and shale up to 3000 4000 m thick, so it is also called the "red basin" or "purple basin".

The Sichuan movement at the end of the Mesozoic Era caused the basin to fold into mountains and sink in the middle, and the outline of the Sichuan Basin was basically formed, and the internal strata of the basin were also deformed on a large scale. A group of north-east-trending folds appeared in the eastern part of the country, which was called the basin east fold belt. The central part forms a vault structure, which is called the vault belt in the basin; The western part is subsided, which becomes the basin subsidence zone, which lays the foundation for the three geomorphological areas of the basin now. The Cenozoic Himalayan movement caused the surrounding mountains to rise again, the basin to sink again, and the Chengdu area to sink deeper.

At the same time, the Yangtze River water system flows into the basin from the north, south and west, and then the Yangtze River cuts through Wushan and flows eastward, completing the unified Yangtze River water system and transforming the inflow basin into an outflow basin.

The interpretation of the Great Artesian Basin is also known as the "Great Australian Basin". In East Central Australia. With an area of about 1.77 million square kilometers, it is the largest artesian basin in the world. Confined aquifers are widely distributed underground, and large amounts of groundwater are stored.

Word breakdown Explanation of basin Flat land surrounded by mountains or highlandSichuan Basin explains in detail the flat land surrounded by mountains or highlands. Such as: Sichuan Basin, Qaidam Basin, etc.

The large artesian basin is auctioned in Australia. The Great Artesian Basin, also known as the Great Australian Basin, is the largest artesian basin in the world, spanning three states: Queensland, South Wales and South Australia. It includes most of the two catchments of the Darling River and Lake Eyre.

The rift extends north to the bay of Carpentaria.

It covers an area of 1,750,000 square kilometers (676,250 square miles), accounting for 1.5 of the country's total area.

Groundwater levels vary widely. The deepest artesian well is 2,100 meters (7,000 meters). An average of 1.3 billion litres of water flows per day to local farmland, pastures and settlements via nullahs and plastic pipes.

The Great Artesian Basin is a basin in Sichuan Province, China, located on the eastern edge of the Sichuan Basin, at the junction of Chongqing Municipality and Zigong City. There are three main rivers in the Great Artesian Lingjian Basin, namely the Zigong River, the Tuojiang River and the Jialing River.

Zigong River: It is the most important river in the Great Artesian Basin, with a total length of about 116 kilometers, originating in the southern part of Zigong City, Sichuan Province. The Zigong River originates in Yungai Mountain, runs through the basin from south to north, and forms a natural wonder in the basin - Zigong Giant Panda Base.

The Kelan Mountain, Qitai Mountain, Daling Mountain and other mountain ranges in the Zigong River Basin are the water source protection areas in southwest China.

Tuojiang River: The basin area in the Great Artesian Basin is about 1,896 square kilometers. The Tuojiang River originates at the junction of Nanchong and Yibin in Sichuan Province and is one of the important tributaries of the upper reaches of the Yangtze River, with a total length of about 888 kilometers and a length of 497 kilometers in Sichuan.

The Tuojiang River flows from north to south through the Great Artesian Basin, where it joins the Jialing River in the southern part of the basin and then joins the Yangtze River.

Jialing River: The basin area in the Great Artesian Basin is relatively small, only about 24 square kilometers. The Jialing River, which originates in the south of the Daqing Mountains in Jinchuan County, a mountainous area in western Sichuan, is one of the largest tributaries of the upper reaches of the Yangtze River in China, with a total length of about 1,119 kilometers, or 636 kilometers in Sichuan.

The Jialing River flows from northwest to southeast through the southern part of the Great Artesian Basin, and after converging with the Tuojiang River in Zigong City, it finally joins the Yangtze River.

I occasionally think that this name should be given by people who are engaged in geology.

The artesian basin is the bottom of the terrain of a certain area, the ground is simple and dry, and the groundwater level in this area is higher than that of this area, and the water flows to a low place, which is called artesianism, which is mostly seen in the obvious place where the surrounding area is high and the middle is low, and the groundwater level is higher than the low place in the area of the barrage.

This basin in Australia is a kind of artesian basin, and it is very large, so it is simply named the Great Artesian Basin. It's like the Grand Canyon in the United States.

Or the reason seems to be the opposite, scientists first studied the large artesian basin and named it, and similar basins studied since then are called artesian basins.

As for what kind of situation it is, it is not clear.

But from this:

The greatest artesian basin is east-central of continental Australia. On the Australian rock formations, covered with impervious layers, the eastern part is rainy, forming a water-receiving area, and the groundwater flow flows at a rate of 11 to 16 metres per year to the western areas with little rainfall. Confined water gushes out of the surface through boreholes or natural springs, hence the name artesian basins.

Australia's livestock industry has benefited from this unique topography. ”

It seems that the reason is the latter.

No. The Great Artesian Basin is a basin topography, and the Central Plains is a plain topography.

The Great Artesian Basin is the third largest basin in the world and the largest artesian basin in the world. In Australia, it is located in the east-central part of the Australian continent.

The Central Plains is located between the Appalachian Highlands and the Rocky Mountains in the United States, from Hudson Bay on the border between the United States and Canada in the north to the Rio Grande River in the Atlantic Coastal Plain in the south.

No, the Central Plains is on the right side of Australia's Great Basin.