论文部分内容阅读
1982年我队在开展永和—张坊地区1:5万区测工作时,于浏阳县永和镇东南八公里处石坳上,见到一套碎屑岩夹灰岩的地层,直接不整合于雪峰期花岗岩体和冷家溪群之上,当时认为是跳马涧组,省地质科学研究所王根贤则认为是古陆边缘棋梓桥组的超覆。尔后王和我们一起赴该地进行剖面研究,结合化石鉴定,予以肯定。这一事实的发现对研究我省棋梓桥组超覆现象,分析湘中地区中泥盆世晚期的古地理环境和沉积相都具有一定意义。石坳上位于高坪向斜的北东部扬起端(图1)。棋梓桥组出露长2公里,宽300米,
In 1982, when carrying out the 1: 50000 zone survey in Yonghe-Zhangfang, our team saw a set of strata of clastic rocks intercalated with limestone at the Shi’ao, 8 kilometers southeast of Liuhe County, The Xuefeng granite body and the Lengjiaxi group were regarded as the “Vaimangjian Formation” at that time. Wang Genxian of the Institute of Geological Sciences of the Province considered it to be overrun by the Chezizi Bridge Formation on the ancient continental margin. After the king went with us to conduct cross-section studies, combined with fossil identification, to be affirmed. The discovery of this fact is of great significance to the study of the overgrowth of the Chezizi Formation in the province and the analysis of the paleogeographic environment and sedimentary facies of the late Middle Devonian in central Hunan. The sag is located on the northern eastern rising edge of the Gaoping syncline (Figure 1). Qizhibiao group exposure 2 km long, 300 meters wide,