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地史时期中,清水与浑水沉积交互的现象非常普遍。这一沉积特征已引起了煤沉积学工作者的兴趣。华北石炭纪含煤岩系中的碳酸盐清水沉积常常受到陆源物质的强烈干扰,碳酸盐台地的存在与海水进退,古陆的“活跃”程度及沉积区、物源区的地形地貌等因素密切相关。在以上因素的综合作用下,台地或被陆源碎屑完全占据而消亡,或与之共存,在横向上犬牙交错形成了华北中晚石炭世陆表海清水、浑水沉积交互共存的复杂古地理景观。
During the geo-history period, the interaction between clear water and muddy water deposition is very common. This depositional feature has attracted the interest of coal depositologists. Carbonate water sediments in the Carboniferous coal measures in North China are often strongly disturbed by terrigenous materials. The presence of carbonate platforms and seawater, the “active” degree of ancient terranes and the topography of sedimentary and provenance areas Factors are closely related. Under the combined action of the above factors, the terraces were completely occupied by terrestrial debris and died or coexisted with each other. Laterally, the intertwined canyons formed a complicated paleogeographic landscape in which the surface water of the Middle and Late Carboniferous in the North China coexisted and the muddy water sedimentary coexisted.