鄂西黄陵背斜周缘震旦系灯影组白云岩成因分析

李浩涵, 张聪, 李文正, 张春贺, 张远, 王梓, 陈维堃, 方镕慧

Genetic analysis of dolomites in the Sinian Dengying Formation on the periphery of the Huangling anticline, western Hubei Province

LI Hao-Han, ZHANG Cong, LI Wen-Zheng, ZHANG Chun-He, ZHANG Yuan, WANG Zi, CHEN Wei-Kun, FANG Rong-Hui

图3 灯影组白云岩场发射扫描电镜照片 a—QLK-23号样品全貌,白云石晶体以自形为主,晶间孔发育(×500);b—照片a局部放大,白云石以自形的菱面体为主,晶体间发育晶间孔(×1000);c—照片b局部放大,白云石晶间孔发育(×2000);d—QLK-11号样品全貌,白云石晶体以自形为主,晶间孔发育 (×500);e—照片d局部放大,白云石以自形的菱面体为主,晶体间发育晶间孔(×1000);f—照片e局部放大,白云石晶间孔发育(×2000)

Fig.3 Scanning electron microscope photo of dolomite in Dengying Formation a—full view of Sample QLK-23 reveals euhedral calcite crystals with well-developed intercrystalline pores (×500); b—enlarged view of part (a) shows euhedral calcite crystals, predominantly rhombic dodecahedra, with well-developed intercrystalline pores (×1000); c—further enlargement of part (b) exhibits the presence of well-developed intercrystalline pores in calcite (×2000); d—full view of Sample QLK-11 displays euhedral calcite crystals with well-developed intercrystalline pores (×500); e—enlarged view of part (d) depicts euhedral calcite crystals, mainly rhombic dodecahedra, with well-developed intercrystalline pores (×1000); f—further enlargement of part (e) showcases the existence of well-developed intercrystalline pores in calcite at a higher magnification level(×2000)