Chinese scientists have confirmed that Xinjiang had the world’s largest meteorite

China scientists have confirmed that Xinjiang has the world’s largest meteorite meteorite data figure original title: China’s scientists have confirmed that the territory of Xinjiang was now known to the world’s largest meteorite rain on 13 October, Xinhua news agency, Nanjing (reporter Cai Yu, Jiang Fang) Chinese Academy of Sciences, Purple Mountain Observatory expert on the 13 bulletin, the mineral petrology and trace elements in the earth chemical analysis, Chinese scientists have confirmed that the size of a huge meteorite rain occurred in Xinjiang province of China, with the fall of up to 425 kilometers, far more than the previous world’s largest meteorite. It is understood that the International Institute of meteorites has officially approved the largest meteorite rain named Aletai meteorite rain. Relevant research results recently published in the Chinese Academy of Sciences and the National Natural Science Foundation of science bulletin. A large meteorite fall in the flight process, because of high temperature and high pressure air flow impact, will burst in the air. If the meteorite is large enough, the pieces will burst like raindrops scattered to the ground, this phenomenon is called "meteor rain". After the world’s first recognized large meteorite rain for the Namibia Jieben (Gibeon) meteor rain, the distribution range of 275 km. Xu Weibiao, chief scientist at the Institute of Astrophysics and Planetary Science at the Purple Mountain Observatory, Chinese Academy of Sciences, has studied meteorites for up to 30 years. According to him, there is a "extraterrestrial" said the meteorite is human study of extraterrestrial first-hand information. The first is to study the meteorite, meteorite samples to analyze the composition of mineral petrology and geochemistry of trace elements, to accurately determine the composition of meteorites. Through collaboration with the University of California at Los Angeles, Xu Weibiao led the project team that discovered in 2011 in Xinjiang Aletai area of Xiaodonggou 5 ton large iron meteorites Wuxilike, main mineral is kamacite, taenite and plessite, vice mineral schreibersite, cohenite troilite and chromite, consistent and after the discovery of the Xinjiang iron meteorite and wulasitai iron meteorite. The trace element geochemical analysis shows that the three iron meteorites belong to paired meteorites, which are derived from the same parent. No one thought that these three pieces of time found more than 100 years apart from the same meteorite meteorite rain." Xu Weibiao said, from the perspective of geographic distribution, the three meteorites broadly distributed in the territory of Xinjiang in a straight line in the northwest to the southeast, the wulasitai in Southeast Xinjiang iron meteorite about 130 kilometers, U F Rick in the Xinjiang iron meteorite about 300 kilometers to the northwest, and Wuxili g and wulasitai 425 kilometers apart. Previously, it has been found in the region has been found in a number of large quantities of iron meteorite individual, including a heavy 18 tons of Allah tears". This indicates that there is a strong correlation between the location of these meteorites fall, Aletai region had an unprecedented scale meteorite rain. Xu Weibiao said that the meteorite distribution range common in a few kilometers to tens of kilometers, Aletai meteorite rain so long meteorite landing distance, reflecting its body size, reentry flight speed and angle, a parent in the air disintegration height are very special, have an important significance and dynamics of the orbital evolution study on near earth asteroid. Aletai meteorite.相关的主题文章: