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黄县断陷盆地充填演化与煤聚积规律

Basin-Filling Evolution and Coal Accumulation in Huangxian Faulted Basin

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【作者】 魏久传李增学李守春

【Author】 WEI Jiu-chuan, LI Zeng-xue, LI Shou-chun ( Geology Dept, Shandong Institute of Mining & Tech, Taian, Shandong 271019, China )

【机构】 山东科技大学地科系!山东泰安271019

【摘要】 研究了黄县含煤盆地沉积充填序列、沉积组合及其空间配置,识别出4种沉积体系类型;划分出2个Ⅲ级层序;分析了盆缘断裂的活动特点及煤的聚积规律.研究表明,盆缘断裂的活动控制了盆地的形成、发展和演化.盆地充填沉积序列可划分出2个构造沉积旋回.其沉积体系构成主要有冲积扇扇三角洲沉积体系、辫状河三角洲沉积体系、滨浅湖湖沼泽沉积体系和深湖浊积沉积体系.其中以低水位水进体系域中的扇三角洲、辫状河、滨浅湖湖沼沉积体系与聚煤作用具有密切关系.主要煤层形成于低水位水进体系域,聚煤作用中心随盆地水域体制的变化而发生迁移.

【Abstract】 ?The basin filling succession, depositional association and thei r spatia l distribution in Huangxian coalbearing basin were investigated. The result sh ows th at the formation and evolution of the basin were mainly controlled by the south boundary fault and the HuangxianDaxindian fault. The basin filling succession can be divided into two tectonicstratigraphic cycles, thus two thirdorder sequen ce s are distinguished. There are four kinds of depositional systems in the coal me asures: alluvial fanfan delta, braided river delta, near shorelacustrine mar sh and lacustrineturbidite depositional systems. Coal accumulation is mainly rela t ed to the fandelta and near shore lacustrine marsh depositional systems in t he lowstandtransgressive system tracts. The coalaccumulating center migrates w ith the evolution of the basin filling and the variation of basin water mechanis m.

【基金】 山东省自然科学基金!(Q94E0432);煤炭科学基金!(95地10509)
  • 【文献出处】 中国矿业大学学报 ,JOURNAL OF CHINA UNIVERSITY OF MINING & TECHNOLOGY , 编辑部邮箱 ,2000年03期
  • 【分类号】P512
  • 【被引频次】9
  • 【下载频次】328
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