论文部分内容阅读
北祁连槽区的范围是指托赖南山、大通山以北,合黎山、龙首山以南,包括现今的河西走廊、走廊南山及托赖山,在早古生代时是极为活跃的一个带状沉陷区。在长达千余公里的窄狭的地区里,下古生界厚度巨大、岩相建造十分复杂、海相喷发岩异常发育、地壳运动相当剧烈。这里是我国著名的具有代表性的槽区。该区的地史演变,曾经而且正在引起许多中外地质学家的极大关注和浓厚兴趣。尽管作者在另文中曾作过概略的阐述,仍感有必要根据已有的调查资料较为细致地深入地对这个槽区的地史发展程序作进一步的探讨。
The scope of the North Qilian Trough refers to Tuolai Nanshan, to the north of Datong Mountain, to Guilin, to the south of Longsheshan, including the present Hexi Corridor, the Nanshan Corridor and the Tuolaishan, which were extremely active during the Early Paleozoic Strip subsidence zone. In a narrow area of more than 1000 kilometers, the Lower Paleozoic is huge in thickness and its facies are very complicated. The marine eruption rocks are exceptionally developed and the crustal movement is quite fierce. Here is our famous representative groove area. The evolution of geography in the area has caused and aroused great interest and interest of many Chinese and foreign geologists. Although the author made a sketchy introduction in another article, it is still necessary to further investigate the development process of the geo-history of the area based on the existing survey data.