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《Fault-Block Oil & Gas Field》 2008-02
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Diagenesis in sequence stratigraphic framework of Paleogene strata in Bozhong Depression

Xie Wuren(Langfang Branch of Research Institute of Petroleum Exploration and Development,CNPC,Langfang 065007,China). Deng Hongwen,Wang Hongliang,et al.  
Based on the X-ray diffraction of clay minerals,analysis of resin-cast thin sections of cores and SEM observation of samples,the diagenesis study on the sequence stratigraphic framework of the paleogene strata in Bozhong Depression shows that there are significantly relationships among the identification marks of three grade sequence interface and organic carbon and clay minerals.The organic carbon content is higher in nearby the maximum flooding surface,the upper of rising half base-level cycle and the lower of dropping half base-level cycle.The organic carbon gradually decreases with the decreasing of base-level and the minimum value is nearby sequence boundary.The maximum value of kaolinite is on sequence boundary and the maximum of illite is on the maximum flooding surface.
【CateGory Index】: P618.13
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