摘要
本文介绍了国际前寒武系-寒武系界线层型候选剖面所在地的滇东地区震旦系-寒武系边界层中新发现的遗迹化石娄型及新的化石层位,根据生物相和沉积相的综合分析将本区划分为3个沉积相区和Skolithos,Cruziaua,Cuziaua-Zoophycus 3个遗迹相带,最后讨论了遗迹化石在划分震旦系-寒武系界线上的意义。
New trace fossils types found in the more than 30 horizons and some new horizons in the Sinian-Cambrian boundary
beds from the eastern Yunnan, the place of the Chinese candidate for global stratotype section and point for the Precam-
brian-Cambrian boundary, are introduced in this paper. On the hasis of the comprehensive analysis of biofacies and sedi-
mentary facies, this region can be divided into three depositional facies areas and following ichnofacies belts: Skolithos
Cruziana and Cruziana-Zoophycus. The significance of using trace fossils for division of the Sinian-Cambrian boundary is al-
so discussed.
基金
国家自然科学基金
关键词
震旦纪
寒武纪
遗迹化石
遗迹相
eastern Yunnan
trace fossils
ichnofacies
Sinian-Cambrian boundary beds
