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中华人民共和国成立以来,在中国共产党的领导下,曾几次派遣科学考察队到西藏地区进行考察。在无产阶级文化大革命期间,中国科学院组织了一支科学考察队,于1966—1968年在东起亚东西到吉隆我国喜马拉雅地区大约50,000平方公里的范围内进行了考察。在地质方面,根据地层发育、变质程度和构造变形的不同考察地区可以分成南、北两条东西向构造带。南带的地层层序非常完全,而北带则只有石炭-二迭纪和中生代地层出露。在南带发现了奥陶纪、志留纪和泥盆纪化石,对中生代和新生代沉积地层进行了较详细的划分,从而初步建立了珠穆朗玛峰(以下简称珠峰)地区比较完整的地层系统。在南带
Since the founding of the People’s Republic of China, under the leadership of the Chinese Communist Party, several times scientific expedition teams have been dispatched to conduct inspections in Tibet. During the Great Proletarian Cultural Revolution, the Chinese Academy of Sciences organized a team of scientific expeditions to conduct investigations in 1966-1968 in the area of about 50,000 square kilometers in the Himalayas from East Asia to East Asia. In geology, according to stratigraphic development, metamorphism and tectonic deformation of the different inspection areas can be divided into south and north two east-west tectonic belt. The stratigraphic sequence in the southern belt is very complete, while in the northern belt only the Carboniferous - Permian and Mesozoic strata are exposed. The Ordovician, Silurian and Devonian fossils were discovered in the southern belt, and the Mesozoic and Cenozoic sedimentary strata were divided in more detail. Thus, the relatively complete stratigraphic system of Mount Everest (hereinafter referred to as Everest) was initially established . In the south