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Title
Coal occurrence characteristics of Paleogene coal measure strata and coal accumulation discipline in Shandong Province
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作者
王奎峰李文平赵辉
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Author
WANG Kui-feng LI Wen-ping ZHAO Hui
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单位
中国矿业大学资源与地球科学学院山东省地质科学研究院山东省第一地质矿产勘查院
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Organization
School of Resources and Earth Sciences,China University of Mining and Technology Shandong Istitute of
Geological Sciences Shandong No.1Exploration Institute of Geology and Mineral Resources
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摘要
为揭示山东省古近纪煤系地层赋煤特征及聚煤规律,以层序地层学、煤田地质学为指导,结合构造地质学、沉积学的相关理论,对其赋煤特征、层序地层及聚煤作用进行研究,结果表明:山东省古近纪煤系地层为五图群李家崖组,其赋存于受断裂控制的新生代断陷盆地中,为煤层与油页岩互层的沉积建造;盆缘断裂构造活动主控黄县聚煤断陷盆地的充填沉积和演化,断陷盆地为陆相扇三角洲-湖泊沉积,沉积体系可划分出扇三角洲体系、辫状河-水下扇体系、滨浅湖-深湖浊积扇体系,以辫状河体系聚煤最为强烈,盆地水域体制的变化控制聚煤作用的发生,聚煤易发生在盆缘断裂活动比较稳定,地形差异较小,盆地水域扩张时期的滨湖地带。
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Abstract
In order to rveal the characteristics of Paleogene coal measure strata and the coal accumulation discipline in Shandong Province,the paper used the seque
nce stratigraphy and the coalfield geology as the guide in combination with the structural geology and sedimentolo-gy related theory,the coal-accumulation discipline and C
haracteristics of Paleogene coal measure strata was discussed. It turns out conclu-sion:Wutu group Ljiaya formation is the paleogene coal measure strata in Shandong Pr
ovince,which hosts in the Cenozoic fault basin con-trolled by the fracture,coal and oil shale interbedding sedimentary formation, syndepositional structure contral the coal m
easure strata's sed-imentation,the sediment flling and evolution of the basin are mainly controlled by the boundary faults activities. Huangxian coal accumula-tion and fault
basin is the continental facies fan dalta and lake sedimentation,the coal measures can be divided into fan delta, braided riverdelta,near shore-lacustrine marsh sedimentary
system,coal accumulation is the most intense in braided river delta system,the coal accu-mulation is controlled by the basin flling and the variation of basin water mechani
sm and when the boundary faults activities is stable,ter-rain differences is lttle,lakeside zone of basin water in the period of expansion,the coal accumulation mostly take pl
ace.
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关键词
古近纪煤岩特征断陷盆地沉积体系聚煤规律
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KeyWords
Paleogene; coal petrographic characteristics; fault basin; sedimentary system; coal accumulation discipline;
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基金项目(Foundation)
中国地质调查局科研资助项目(12120113007200);山东省地勘基金资助项目(鲁勘字[2008]53号);