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Volume 39 Issue 6
Dec.  2020
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ZHANG Qingyu, LI Jingrui, LIANG Bin, DAN Yong, CAO Jianwen. Characteristics and paleoenvironmental significance of Ordovician karst inclusions in the Tazhong area ,Tarim basin[J]. CARSOLOGICA SINICA, 2020, 39(6): 894-899. doi: 10.11932/karst2020y61
Citation: ZHANG Qingyu, LI Jingrui, LIANG Bin, DAN Yong, CAO Jianwen. Characteristics and paleoenvironmental significance of Ordovician karst inclusions in the Tazhong area ,Tarim basin[J]. CARSOLOGICA SINICA, 2020, 39(6): 894-899. doi: 10.11932/karst2020y61

Characteristics and paleoenvironmental significance of Ordovician karst inclusions in the Tazhong area ,Tarim basin

doi: 10.11932/karst2020y61
  • Publish Date: 2020-12-25
  • Carbonate rock paleokarst-type reservoirs in carbonate rock are a key field of oil and gas exploration and development, which have strong heterogeneity, remaining a difficult problem throughout the world. In this aspect, the determination of palaeokarst periods is always a technical barrier in geological modeling of the palaeokarst reservoirs. At present, the methods to distinguish the development periods of ancient karst are mainly based on the characteristics of exposed ancient karst fillings. The geological structure in the Tazhong area, Tarim basin is complex, with multiple-period superimposed reformation of palaeokarstification. This work uses the honogenization temperature method on fluid inclusions filled in calcite of ancient karst to study the periods and environment of ancient karst in Ordovician carbonate rock of the Tazhong area. Four periods of ancient karstification are revealed, i.e. Caledonian, late Hercynian, Indosinian to Yanshanian and Himalayan times.The research results are of great significances to the prediction of karst reservoirs in the future.

     

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