扬子西南缘古元古界亮山组圆盘状化石的发现及其环境意义  

Discovery and environmental significance of the discoid fossil from the Paleoproterozoic Liangshan Formation in southwestern Margin of Yangtze

作　　者：刘军平 赵江泰 孙载波 莫雄 孙志明[4] 曾文涛 LIU Junping;ZHAO Jiangtai;SUN Zaibo;MO Xiong;SUN Zhiming;ZENG Wentao(Yunnan Institute of Geological Survey,Kunming,650216;School of Earth Science and Resources,China University of Geosciences,Beijing,100083;Key Laboratory of Sanjiang Metallogeny and Resources Exploration and Utilization,MNR,Kunming,650051;Chengdu Center,China Geological Survey,Chengdu,610081)

机构地区：[1]云南省地质调查院,昆明650216 [2]中国地质大学地球科学与资源学院,北京100083 [3]自然资源部三江成矿作用及资源勘查利用重点实验室,昆明650051 [4]中国地质调查局成都地质调查中心,成都610081

出　　处：《地质论评》2022年第1期281-286,共6页Geological Review

基　　金：云南省国土资源厅基金项目“云南省1∶5万撒马基幅、因民幅、贵城幅、舒姑幅区域地质调查(编号:D201905)”;云南省古生物化石开发保护调查(编号:530000210000000021416);云南古生物化石产地示范调查的成果。

摘　　要：通过1∶5万区域地质调查研究,首次在滇中易门地区古元古界易门群亮山组发现圆盘状宏体化石,进一步丰富了滇中古元古代早期宏体化石群种类,为扬子西南缘前寒武纪地层大区域对比提供古生物依据。本次的初步报道为从不同角度探索距今2.8~0.8 Ga的地球早期发展、演化历史开启了新窗口;对地球早期的环境演化与生命进化的研究具有重要价值,值得进一步发掘研究。Objectives:Through a 1∶50,000 regional geological survey and research,for the first time,disc-shaped macrofossils were discovered in the Liangshan Formation of the Yimen Group in the Yimen area of central Yunnan.Results:For the first time,disc-shaped macrofossils were discovered in the Liangshan Formation of the Yimen Group of Paleoproterozoic in the Yimen area of central Yunnan,which further enriched the types of early macrofossil groups in the Central Yunnan Paleoproterozoic.Conclusions:The large-area comparison of the Precambrian strata in the southwestern margin of Yangtze provides paleontological evidence.This preliminary report opens a new window for exploring the early development and evolution history of the Earth from 2.8 billion to 800 million years ago from different perspectives;it is of great value to the study of the early Earth,s environmental evolution and life evolution,and it is worthy of further exploration and research.

关 键 词：圆盘状宏体化石 古生物 古元古代 亮山组 易门地区 

分 类 号：P534.3[天文地球—古生物学与地层学] Q911.2[天文地球—地质学]