几年来我校以浙江江山为教学实习基地,在教学过程中,对江山的古生代几个地层做了一些工作,在江山城西北进行了1:50000的地质测量,在前人工作的基础上有一些新的认识,现把它做一小结,供有关地质队及学校实习参考。一、江山西山震旦系新认识震旦系地层沿西山呈北北东一南南西向分布。北自下山后,南到鸡公山下西山垭口一带,长约三公里,东西最宽约500公尺,由于断裂构造及复盖,无一完整剖面(断失、硅化 Over the past few years our school to Zhejiang Jiangshan as a teaching practice base in the teaching process, a few of the Paleozoic Jiangshan some of the work done in the northwest of Jiangshan City 1: 50000 geological survey, based on the previous work Some new understandings, now it is a summary, for the geological team and school internship reference. First, the new understanding of the Western Sinian Sinian The Sinian strata along the Xishan North-South East-South-South distribution. North from down the mountain, south to Jigongshan Xishan Yamaguchi area, about three kilometers long, east-west most wide 500 meters, due to the fault structure and cover, without a complete profile (loss, silicification