论文部分内容阅读
一、研究史 1970年江苏区测队一分队在进行1/5万丁蜀幅区调过程中,于宜兴县丁蜀镇青龙山南坡黄龙组下部白云岩中发现(竹蜓)类及珊瑚化石。经鉴定后认为这些化石系巴什基尔晚期产物,逐将该地黄龙组分为两段:灰岩段(上);白云岩段(下)。并认为灰岩段相当于宁镇一带黄龙组的全部,白云岩段在宁镇一带缺失,而宁镇一带的老虎洞组亦在本区缺失(江苏区调队,1973:1/5万社渚幅、张渚幅、丁蜀幅区域地质调查中间报告)。
First, the study of history In 1970 Jiangsu squadron of a unit in the process of 1/5 000 Ding Shu amplitude adjustment process, in Yixing County, Qingshuang south slope of Qinglongshan Huanglong Formation in the lower dolomite found in the (bamboo dragonfly) and coral fossils . After identification, it is considered that these fossils are the late products of Bashkir and are divided into two segments according to the Huanglong Formation: limestone (upper) and dolomite (lower). It is also considered that the limestone section is equivalent to all the Huanglong Formation in Ningzhen, the dolomite section is missing in Ningzhen, and the Tiger Cave Formation in Ningzhen is also missing in this area (Jiangsu Tiaoyuan 1973: 1/5 Wan She Houzhu, Zhangzhu amplitude, Ding Shu amplitude regional geological survey interim report).