论文部分内容阅读
区域地质教研室的教师和历届同学们,从五十年代起至今二十余年间,曾在河南嵩山地区进行了大比例尺的详细地质调查填图和专门的构造研究,旨在揭示该区地质构造演化,特别是前寒武纪构造变形史和重力构造.为了教学的目的,总结了变质岩构造的研究方法,即对变质地质体的各种结构要素进行几何学、运动学和动力学分析的构造解析.藉此院学报复刊之际,就后一问题作一简要汇报,以表心意,不当之处请指正.这个问题之所以重要,在于当前地球科学发展的趋向是已从海洋转向大陆.六十年代可以说是海洋的时代,在大规模海洋地球物理探测获得的新资料基础上,提出了海底扩展并形成了板块构造学说.今天,它的发展又将注意力转向了大陆,因为大陆平均密度较低,能在地慢上漂浮,它们经历了地质历史的主要部分,含有约95%(约40亿年)的地球历史的近地
Regional geology teachers and past students, from the fifties to the present more than 20 years, has conducted a large-scale geological mapping and specialized tectonic research in the area of Songshan, Henan, in order to reveal the geological structure of the area Evolution, especially the Precambrian tectonic deformation history and gravity structure.For the purpose of teaching, the research methods of metamorphic rock structure are summarized, that is, geometric, kinematic and dynamic analysis of various structural elements of metamorphic geological body Structure analysis.Through this college journals, the issue of a brief report on the latter issue, with the intention, improper please correct me.The question is important because the current trend of development of earth science has been from the ocean to the mainland. The 1960s can be said to be the era of the sea, and based on the new data obtained by large-scale oceanographic geophysical exploration, the submarine expansion and the formation of plate tectonics have been proposed. Today, its development turns its attention to the mainland because the mainland Lower average densities, which can float slowly over the earth, have undergone a major part of geological history, with nearly 95% (about 4 billion years) of earth-history near-Earth