【摘要】 在辽西阜新北部原建平群大理岩系中发现了大量的微古植物化石，经鉴定有５个属，其组合时代为中元古代。这些微古植物化石的发现为确定这些大理岩形成时代提供了可靠证据，并对进一步探讨华北板块北缘古大陆边缘构造演化及整个东北亚地区的前寒武纪地质具有重要意义更多还原

【Abstract】 A lot of assemblage of micropaleontological fossils had been discovered in marbles which belong to primary Archean Jianping Group during 1∶50 000 geological survey. Five genus have been identified, and the researches suggest their age be Middle Proterozoic. The discovery of those micropaleontological fossils provide direct evidences for dating the age of marbles, and it is important in studying the tectonic evolution of continent margin in North China platform and northeast Asia.更多还原