| 孙吴—嘉荫盆地淘淇河组湖底扇沉积特征 |
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| 引用本文： | 张雷,刘招君 杨婷 杜江峰 侯伟.孙吴—嘉荫盆地淘淇河组湖底扇沉积特征[J].西南石油大学学报（自然科学版）,2009,31(3):57-61. |
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| 作者姓名： | 张雷 刘招君 杨婷 杜江峰 侯伟 |
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| 作者单位： | 1.中国石油大学资源与信息学院，北京 昌平 102249； 2.吉林大学地球科学学院，吉林 长春 130061
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| 摘 要： | 孙吴—嘉荫盆地沾河断陷下白垩统淘淇河组发育典型的湖底扇沉积。根据地化、岩芯、测井并结合粒度分析等资料，认为本区湖底扇发育于淡水还原环境中，将湖底扇进一步划分为内扇、中扇和外扇3个亚相以及6个微相。本区湖底扇主要发育于同生断裂控制的陡坡一侧，受控于同生断裂的幕式构造活动，保存在半深湖—深湖的滞水环境中，属于阵发型湖底扇。湖底扇相砾岩及砂岩易形成岩性圈闭，其中以中扇辫状沟道微相浊积岩系储集条件最佳。
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| 关 键 词： | 孙吴—嘉荫盆地 沾河断陷 淘淇河组 湖底扇 沉积特征 石油地质意义 |
SEDIMENTARY CHARACTERISTICS OF SUBLACUSTRINE FAN OF TAOQIHE FORMATION OF LOW CRETACEOUS IN SUNWU-JIAYIN BASIN |
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| ZHANG Lei,LIU Zhao-jun YANG Ting DU Jiang-feng HOU Wei.SEDIMENTARY CHARACTERISTICS OF SUBLACUSTRINE FAN OF TAOQIHE FORMATION OF LOW CRETACEOUS IN SUNWU-JIAYIN BASIN[J].Journal of Southwest Petroleum University(Seience & Technology Edition),2009,31(3):57-61. |
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| Authors: | ZHANG Lei LIU Zhao-jun YANG Ting DU Jiang-feng HOU Wei |
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| Institution: | 1.College of Resources and Information，China University of Petroleum，Changping Beijing 102249，China;2.College of Earth Sciences，Jilin University，Changchun Jilin 130061，China |
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| Abstract: | The Taoqihe formation of Low Cretaceous of Zhanhe Rift in Sunwu-Jiayin Basin develops typical Sublacustrine fan sedimentation.According to geochemistry，core and well log information,combining with the grain analysis data，it is confirmed that the Sublacustrine fan develops in the hydrogenate fresh water environment.Also,the Sublacustrine fan is divided into three subfacies,inner fan，middle fan and outer fan furtherly,six microfacies are recognized in this region.The Sublacustrine fan in this region develops near the steep slope controlled by the syngenesis fault and is dominated by the fault episodic tectonic activity.The Sublacustrine fan,which is conserved in the semi-deep lacustrine-deep lacustrine perched water environment,pertains to surging sublacutrine fan.The conglomerate and sandstone in the fan is favorable to form lithologic trap,the turbidities of braided channel microfacies in middle fan has the best storage condition. |
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| Keywords: | Sunwu-Jiayin Basin Zhanhe Rift Taoqihe Formation Sublacutrine fan sedimentary characteristic significance of petroleum geological |
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