鄂西黄陵背斜周缘埃迪卡拉纪灯影组地层序列及其区域地层对比意义  

Stratigraphic Sequence of the Ediacaran Dengying Formation around the Huangling Anticline,Western Hubei Provence:Implications for Regional Stratigraphic Correlation

作　　者：安志辉[1,2] 叶琴 童金南[3,4] 田力[4] 赵小明 An Zhihui;Ye Qin;Tong Jinnan;Tian Li;Zhao Xiaoming(Wuhan Center of China Geological Survey,Wuhan 430205,China;Hubei Key Laboratory of Paleontology and Geological Environment Evolution,Wuhan 430205,China;School of Earth Sciences,China University of Geosciences,Wuhan 430074,China;State Key Laboratory of Biogeology and Environmental Geology,Wuhan 430078,China;Institute of Karst Geology,CAGS,Guilin 541004,China)

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205 [2]古生物与地质环境演化湖北省重点实验室,湖北武汉430205 [3]中国地质大学地球科学学院,湖北武汉430074 [4]生物地质与环境地质国家重点实验室,湖北武汉430078 [5]中国地质科学院岩溶地质研究所,广西桂林541004

出　　处：《地球科学》2024年第8期2992-3009,共18页Earth Science

基　　金：国家自然科学基金(Nos.41802206,41902004);中国地质调查局项目(No.DD20230218,DD20221634);中国地质调查局武汉地质调查中心项目(No.QL2022-01)。

摘　　要：华南峡东地区埃迪卡拉纪灯影组保存了大量埃迪卡拉纪宏体生物化石,是研究寒武纪大爆发之前生命演化的热点地层单元之一.峡东灯影组一般划分为3段,然而灯影组在黄陵背斜周缘不同位置的厚度、岩性等方面具有差异性,使得峡东地区灯影组的地层对比关系还有待于进一步研究.围绕鄂西黄陵背斜周缘灯影组进行对比研究,以岩石地层序列为基础,厘定不同区域灯影组的地层序列.将黄陵背斜周缘灯影组地层总结归纳出7种类型并建立各岩石地层单元之间的联系.从而揭示灯影组的区域性变化,进而为埃迪卡拉纪晚期环境和生物演化研究提供地层对比方面的重要支撑.The Ediacaran Dengying Formation inthe Yangtze Gorges area contains many well-preserved macrofossils,one of the most intensively studied Ediacaran units before the Cambrian Explosion.The Dengying Formation in the Yangtze Gorges area canbe generally subdivided into three lithostratigraphic members.However,the thickness and lithology of the Dengying Formation at different locations around the HuanglingAnticline are different.The stratigraphic correlation of the Dengying Formation in the Yangtze Gorges area needs further study.In this paper,a comparative study was carried out around the HuanglingAnticline in western Hubei Province.The stratigraphic sequence of the Dengying Formation is proposed to be categorized into seven types based on lithostratigraphic features.Moreover,the relationship between each lithostratigraphic unit in the Denying Formation is summarized.Consequently,the research will bebeneficialto the regional correlation of the Dengying Formation,and help unveil environmental and biotic evolutions in the late Ediacaran period.

关 键 词：埃迪卡拉纪 灯影组 庙河段 地层对比 峡东地区 地层学 

分 类 号：P535[天文地球—古生物学与地层学]