论文部分内容阅读
自李四光教授创立山字型构造以来,淮阳山字型构造的研究受到人们的重视,但涉及淮阳山字型形成过程方面的论述尚少。安徽省和县至庐江一带是该山字型前弧东冀的东北邯分,笔者近二、三年中为研究该地区构造对煤田形成及分布的控制作用,曾参加过地面地质调查工作,从获得的地质资料分析,淮阳山字型前弧东冀有长期的、复杂的形成过程并可以分出成型前期、成型期及改造期。印支旋回及其以前的时期乃是区域上华夏系构造发育时期,燕山早期重接复合为山字型前弧东冀,燕山中晚期及其后它受到进一步的加强与改造,但前孤东冀构造仍然醒目。
Since the establishment of Shanzi type structure by Professor Li Siguang, the research on the font structure of Huaiyang Mountain attracts people’s attention, but there is still little discussion about the forming process of Huaiyang Shan typeface. In the past two to three years, in order to study the control over the formation and distribution of coalfields in this area, I participated in the work of surface geological survey, From the analysis of the obtained geological data, Huaiyang Mountain fonts have long-term and complicated formation process and can separate pre-forming, forming and reconstructing periods. The Indosinian cycle and its former period were the period of the tectonic development of the Huaxia system in the region. It was further strengthened and reconstructed by the early reconnection of the Yanshan mountain in the early arc, Ji structure is still eye-catching.