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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
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YANG Hanxuan,HU Anping,ZHENG Jianfeng,LIANG Feng,LUO Xianying,FENG Yuexing,SHEN Anjiang
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Table 1 U-Pb ages and geochemical characteristics of host rock and various phases of cements of the Qigeblak Formation in northwestern Tarim Basin.
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| Tested fabrics | Sample ID | U-Pb ages
/Ma | Stable isotopes | 87Sr/86Sr | CL | | δ13C(‰) | δ18O(‰) | | HR | Q-58-1-2 | 576±16 | 1.007 to 2.795 | -5.936 to -4.290 | 0.70874 | Dull luminescence | | Q-76-1 | 560±26 | 0.70870 | | FID | Q-58-1-2 | 553±20 | 2.033 to 2.158 | -7.125 to -6.566 | 0.70884 | Dull luminescence with bright luminescent bands | | Q-76-1 | 556±17 | | X-151-1 | 513±20 | | BD | Q-58-1-1 | 542.7±8 | 1.001 to 1.598 | -6.651 to -6.610 | 0.70885 | Dull luminescence | | Q-58-1-2 | 542±26 | | PFCD | Q-56-1 | 486.3±6.8 | 1.834 | -8.253 | 0.70900 | Non-dull luminescence | | MCD | Q-76-1 | 472.3±7.7 | 1.502 | -8.766 | 0.70913 | | SSD | X-151-1 | 215±30 | -3.53 to -3.51 | -10.39 to -9.50 | 0.70930
0.70946 | Bright luminescence |
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