滇中易门地区发现化石新物种  

The discovery of new fossil species in the Yimen region,central Yunnan

作　　者：刘军平 李静 孙柏东 胡绍斌 曾文涛 刘发刚 孙志明[4] 丛峰[4] 徐云飞 LIU Jun-ping;LI Jing;SUN Bai-dong;HU Shao-bin;ZENG Wen-tao;LIU Fa-gang;SUN Zhi-ming;CONG Feng;XU Yun-fei(Yunnan Institute of Geological Survey,Kunming 650216,Yunnan,China;Yunnan Institute of Environmental Monitoring,Kunming 650216,Yunnan,China;Yunnan Bureau of Geological Survey,Kunming 650216,Yunnan,China;Chengdu Center,China Geological Survey,Chengdu 610081,Sichuan,China;College of Land Resources and Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China)

机构地区：[1]云南省地质调查院,云南昆明650216 [2]云南省环境监测院,云南昆明650216 [3]云南省地质调查局,云南昆明650216 [4]中国地质调查局成都地质调查中心,四川成都610081 [5]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《沉积与特提斯地质》2018年第1期37-40,共4页Sedimentary Geology and Tethyan Geology

基　　金：中国地质调查局地质调查项目(DD20160017);中国地质科学院地质研究所地质调查项目(121201102000150012-02)联合资助

摘　　要：通过1∶50 000区域地质调查,在滇中易门地区前人划分的中元古界东川群鹅头厂组灰黑色炭泥质板岩中首次发现了大量保存较好的宏体多细胞生物化石。通过镜下分析、电子探针及电镜扫描的研究,确证其是迄今为止生物结构最为完整的个体较大的多细胞宏体生物化石,填补了云南境内前寒武纪地层无生物化石的空白,宏体生物化石的发现有重大的科学意义及科研价值,是地球早期生命演化研究领域中一项重大的科学发现对地球早期地球环境演化与生命进化的研究具有重要价值。Through 1： 50 000 regional geological survey,a large number of well-preserved multicellular macrosomal fossils were discovered for the first time in the grayish black carbonaceous muddy slates of the Etouchang Formation of the Mesoproterozoic Dongchuan Group in the Yimen region,central Yunnan. It is inferred from the zircon U-Pb age data that these fossils may be dated at ca. 2200 Ma. The microscopic analysis,electron probe analysis and electron microscopic scanning analysis have confirmed that these fossils are the largest multicellular macrofossils with the most complete biological structures,and fills up the blank of non-biofossil records in the Precambrian strata in Yunnan. This discovery is of great scientific signicance and scientific values in the study of the evolution of the Earth＇s environments and life during the early periods of the Earth＇s history.

关 键 词：滇中易门地区 宏体化石 生命演化 

分 类 号：P534.1[天文地球—古生物学与地层学]