摘要
通过这次对沙尔布尔地区的1：50000区调工作，在地层方面的新进展主要有；以用Sm－Nd法获得的同位素年龄值为依据首次划分出震旦扎根据生物化石确定了上奥陶统；按岩性的不同将中志留统分为两个组，即沙尔布尔组和哈拉钦布克组，并根据原哈尔加乌组中发现的大量中志留世化石组合，将该组改为沙尔布尔组；在卡拉岗组内首次采集到对确定该组的地质时代具有重要意义的化石．
Through regional geological mpaaing of 1: 50 000 scale in the Shaerbuer region,we put forward some new ideas on the strata:sinion period was first defined by the Sm Nd isotopic age determination in this area; Upper ordovician was ascertained according to bio fossils;Mesosiluria series was divided into two formations,that is Sarbur and Haratiebug formation,on the basis of different lithologic character and fossil assemblage; we collected important fossils in the kargong formation for the first time.
