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国际前寒武系—寒武系界线工作组1983年5月9日至13日在英国布里斯托尔召开全体会议。我国派出两名正式委员(有投票权的委员)和一名中国地质学会的代表参加了这次会议。会议的主要任务是:1.重新审定1974年巴黎会议和1978年剑桥会议所确定的解决前寒武系—寒武系界线问题的基本原则;2.由全体成员初步选定一个国际前寒武系—寒武系界线层型剖面和层型点,作为正式委员进行投票表决时参考;3.提出划分元古宇和显生宇
The International Precambrian-Cambrian Boundary Line Working Group held a plenary session in Bristol, United Kingdom, from May 9 to 13, 1983. China has sent two formal members (members with voting rights) and a representative of China Geological Society attended the meeting. The main tasks of the conference are: 1. To re-examine the basic principles for resolving the Precambrian-Cambrian boundary line as determined at the Paris Conference of 1974 and the Cambridge Conference of 1978; 2. Initially, an international Precambrian Department - Cambrian boundary line layer-type profile and layer points, as an official member of the vote for reference; 3 proposed the division of ancient yuan and Xiangyu Wo