Application of mapping and dating techniques in the study of ancient carbonate reservoirs: A case study of Sinian Qigebrak Formation in northwestern Tarim Basin, NW China

YANG Hanxuan,HU Anping,ZHENG Jianfeng,LIANG Feng,LUO Xianying,FENG Yuexing,SHEN Anjiang

Fig. 5. Laser ablation in-situ U-Pb Tera-Wasserburg concordia plots of dolomite host rock and cements from Qigeblak Formation of northwestern Tarim Basin. (a) HR, sample Q-58-1-2; (b) HR, sample Q-76-1; (c) FID, sample Q-58-1-2; (d) FID, sample Q-76-1; (e) BD, sample Q-58-1-1; (f) PFCD, sample Q-56-1; (g) MCD, sample Q-76-1; (h) SSD, sample X-151-1. LIA—lower intercept age; N—number of ablation spots; MSWD—mean standard weighted deviation.