In science, changes in mountains are often caused by the movement between plates, which is what we call geological changes. Scientists recently imaged the sinking and rupture of lithosphere in Tibet, giving us a time of formation within 10 million years of the southern half of the "roof of the world". There is a long debate about the mechanism of rising on the Qinghai-Tibet Plateau and more specifically, the link between lithosphere evolution and plateau uplift and volcanic activity surface expression.
Scientists say a study from Rice University in the United States shows that a T-shaped high-speed wave velocity structure is shown in a new fault pattern in southern and central Tibet, interpreted as an upper mantle residue from early lithosphere settlement. The collapse of the lithosphere caused the asthelium to be dragged down, which promoted the continued closure of the lithosphere in mainland India and the shortening and thickening of the northern Tibet lithosphere.
Scientists say that the surface uplift in northern Tibet is affected by recent asthroid uplift and thickened heat erosion of lithosphere, spatially consistent with the recent potassium volcanic action and narrow low-speed wave bands imaged by the uppermost mantle. The Indian and Eurasian plates have produced a high-elevated effect on the Qinghai-Tibet Plateau and the Himalayas zone. The geodetic measurement of observations show that not only the plates are squeezed and converged between India and Eurasia, but the plates are also deformed at present.
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s scientists used the global positioning system measurements to show that the current crustal movement of the Eurasian plate is lowered northward compared to the stable Eurasian plate, moving about 40 mm per year in northern India, while in the central Tibet, there is only a rate between 10 mm and 25 mm per year. This rate suggests that the within-plate shortening has a difference in adaptive speed, that is, the Indian plate moves more, and the Eurasian plate is in a basically stable form.
using existing magnetic, paleomagnetic and volumetric equilibrium research estimates that the Indian plate and Eurasian plate converge along the arc of the Himalayan fault zone, increasing from 1800 kilometers to 2800 kilometers in the east and west, and in the central and northern plateaus of the southern and lower crust flow subduction, distributed in the shortening and thickening areas of the Tibet crust, injected in the northern part of the Indian crust, thickening convection stripping of the lower part of the Tibetan lithosphere, rigid compression of the Indian plate and continental block extrusion, and the inner subduction began to be located in the outer areas of the Indian and Eurasian plates.
Scientists say that data based on surface observations show that geological and tectonic research often focuses on the convergence of the crustal lithosphere. In contrast to the widely recognized crust thickening effect. To date, there is no direct evidence for thickening of the lithosphere mantle. Therefore, the evolution of the mantle lithosphere tectonics in the Tibetan continent still exists, and these prominent features are all dependent on more robust seismic observations of the mantle of the underground lithosphere in Tibet.
Summary: Through mantle tomography, it is concluded that southern and northern Tibet are separated by Tibet to Sands sutures, and now the southern Tibet is divided into three areas from the west to the east, namely the southwest, the central and southeast Tibet, continuously imaged along the Himalayan arc with a depth of 250 kilometers, and a T-shaped high V structure in the central and southern Tibet region, which extends from 250 kilometers to the bottom of the transition zone.
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See science with your eyes and the world with scientific thinking. This article is original by the author "Global Science Cat"
