【摘要】 以新发现的Ｄｉｃｔｙｏｎｅｍａｆｌａｂｅｌｌｉｆｏｒｍｅ－Ｓｔａｕｒｏｇｒａｐｔｕｓ笔石带的典型分子和带化石，结合岩性及其组合特征确定了本溪火连寨寒武系－奥陶系的界限。在系统描述岩性的基础上对该区上寒武统沉积发展史及沉积环境进行了分析。更多还原

【Abstract】 The boundary between Cambrian and Ordovician in Huolianzhai is determined from typical meleculea and fossilsin the newly discovered Dictyonema flalelliborme-Staurograptus graptolite belts, intergrated with lithology and combina-tion features. on the basis of systematic description of lithoiogy, sedimentary history and environment of Upper Cam-brian in this area are analysed.更多还原