THE INVESTIGATION OF PALEOZOIC STRATA IN SHUGUANG BURIED HILLS OF LIAOHE BASIN: GEOLOGICAL SIGNIFICANCE
-
摘要: 辽河盆地曙光古潜山以碳酸盐岩和砂页岩为主的古潜山地层一直划归到中、新元古界.由于在该套地层的岩石薄片中发现交代残余的动物化石碎片,因此提出辽河盆地有古生界存在的新观点.通过牙形石、化石岩石学和岩性组合的研究,结合测井资料对这套地层进行了重新厘定,建立了古生代寒武纪、奥陶纪地层层序,并对这套地层特征进行了详细描述.这项研究成果表明,辽河盆地存在古生代储层.同时通过古生界的厘定,认为古生代潜山并非单斜,而是由被断裂改造的褶皱组成的断块,这一结论为重新认识潜山的内幕构造特征及油气储层分布规律奠定了基础.另外,辽河盆地古生界的确定扩大了辽宁省古生代地层的分布范围,对修改和完善辽宁省该时期的岩相古地理特征具有十分重要的价值.Abstract: The strata with carbonate rock, sandstone and shale in Shuguang buried hills of Liaohe basin were considered as Mesoproterozoic and Neoproterozoic. The discovery of the remained animal fossils in these strata leads to the new point of that Paleozoic layers exist. By study on conodonts, fossil petrology, rock assemblage and logging data, this set of strata is reclassified and described, and the stratum sequence of Cambrian and Ordovician is established. The results indicate that the Paleozoic reservoir exists in Liaohe fault basin. The buried hills are not monocline but a complex faulted block composed of a part of a fold. On this basis, the structural features and distribution of the Paleozoic hydrocarbon reservoir inside the Liaohe basin buried hills can be viewed. In addition, the determination of the Paleozoic in the Liaohe basin extends the distribution of the Paleozoic in Liaoning Province. It is significant in modifying and perfecting the lithofacies paleogeography of the period.
-
-
计量
- 文章访问数: 258
- PDF下载数: 60
- 施引文献: 0
下载: