图 1  研究区域地质简图^{[11, 26, 38]}

Figure 1.  Geological map of the study area showing the location of Well EYD5

图 2  EYD5井陡山沱组-灯影组蛤蟆井段典型岩性特征

a.灯影组蛤蟆井段岩溶角砾岩；b.陡山沱组四段页岩；c.陡山沱组三段砂屑灰岩；d.陡山沱组二段上部含硅磷质结核白云岩；e.陡山沱组二段下部含硅磷质条带页岩；f.陡山沱组一段盖帽白云岩

Figure 2.  Typical lithologic photos from the Doushantuo Formation to the Hamajing Member of the Dengying Formation in the Well EYD5

图 3  EYD5井埃迪卡拉系陡山沱组-灯影组δ¹³C和δ¹⁸O值相关性分析

Figure 3.  Cross-plots of δ¹³C vs.δ¹⁸O from the Doushantuo Formation to the Dengying Formation in the Well EYD5

图 4  EYD5井埃迪卡拉系陡山沱组综合柱状图

Figure 4.  Comprehensive column of the Ediacaran Doushantuo Formation in the Well EYD5

图 5  宜昌地区EYD5井埃迪卡拉系碳同位素同位素曲线划分及对比^{[10, 17, 29, 40-42]}

Figure 5.  The carbon isotope correlation of the Ediacaran in the Well EYD5, Yichang area, western Hubei

图 6  黄陵背斜周缘埃迪卡拉系陡山沱组-灯影组蛤蟆井段地层划分对比图（据文献[49]修改）

Figure 6.  Stratigraphic division and correlation of the Ediacaran Doushantuo Formation-Hamajing Member of the Dengying Formation in the perphery of the Huangling anticline