Genesis of lacustrine carbonate breccia and its significance for hydrocarbon exploration in Yingxi region, Qaidam Basin, NW China

Yanqing WANG,Zhanguo LIU,Guangyong SONG,Yongshu ZHANG,Chao ZHU,Senming LI,Peng WANG,Pengcheng TANG

Fig. 5. Photographs of interlayer slip breccia in upper member of Lower Ganchaigou Formation of Yingxi area. (a) Well S40, 3 146.61- 3 147.53 m, the carbonate rock is crumpled and broken, and the top and bottom strata are flat and plastically deformed, and inter-breccia cracks and holes are developed; (b) Well S40, 3 147.61-3 147.81 m, with the same characteristics as (a); (c) Well S38-4, 3031.49-3 031.79 m, cracks and holes between breccias partially filled by anhydrite; (d) Well S40, 3 150.66 m, fracture network; (e) Well S38-4, 3 733.47 m, cracks and holes between breccias partially filled by anhydrite.