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以位于秦岭—大别造山带之北、华北陆块南部、地跨华北陆块稳定块体、陆块南部边缘变形带的南华北盆地为研究对象,通过对研究区42条不同时代的野外剖面详细观测,运用层序地层学理论,把南华北盆地作为一个整体系统,对青白口系—侏罗系层序界面特征及时空分布规律进行了系统分析,共识别出了8种类型层序界面的物质表现形式,分别是不整合面、渣状层、古喀斯特作用面、冲刷侵蚀面、超覆面、岩性岩相转换面、最大海泛面、最大湖泛面。并重点讨论了各类型界面的时空分布特征。结果表明:在时间演化上,从早到晚由海相—海陆过渡相—陆相,层序界面经历了海相沉积不整合、古喀斯特作用面、渣状层到陆相不整合面、冲刷侵蚀面等;在空间上,同一层序界面在不同相带表现形式不同,同一种类型的界面可在不同相带出现,但不同相带表现特征有一定差异性。
In the northern part of Qinling-Dabie orogenic belt, the southern part of North China Block, the South China North Basin that covers the North China block and the southern edge of the block is the object of study. Through the field sections of 42 different ages in the study area, Detailed observations and application of sequence stratigraphy theory, the South China North Basin as a whole system, the Qingbaikou - Jurassic sequence boundary characteristics and temporal and spatial distribution of a systematic analysis of the consensus identified eight types of sequence interfaces The material manifestations are unconformity, slag-like layer, paleokarst surface, erosion erosion surface, overlying surface, lithology and lithofacies conversion surface, the largest sea surface and the largest lake surface. It also discusses the spatiotemporal distribution of various types of interfaces. The results show that, from time to time, the marine facies-land-sea transitional facies-continental facies and sequence boundaries have undergone marine sedimentation unconformities, paleokarst facies, slag-like facies unconformities on the continental facies, Etc .; in spatially, the interfaces of the same sequence show different forms in different facies belts, and the same kind of interfaces can appear in different facies belts, but the characteristics of different facies belts have some differences.