一、前言西藏申扎地区古生代地层为西藏地质局综合普查大队于1977—1978年期间建立,并于1980年4月作了公开报导。由于该区古生代地层发育比较完整,化石丰富,并与珠穆朗玛峰地区古生代地层有许多相似性。对于解释雅鲁藏布江南北两侧地质发展历史有重要意义。因此,立即引起有关单位的重视。1980年6—7月,作者等在该区进行了更详细的研究 I. Preface The Paleozoic strata in the Xainza area of ​​Tibet were established by the General Geographic Census Brigade of the Tibet Bureau of Geology from 1977 to 1978 and were publicly reported in April 1980. Due to the relatively complete Paleozoic stratigraphic development in the area, the fossils are abundant and have many similarities with the Paleozoic strata in the Qomolangma area. It is of great significance to explain the history of geological development on both sides of the north and south of the Yarlung Zangbo River. Therefore, it immediately aroused the attention of the relevant units. From June to July 1980, the author conducted a more detailed study in the area