哈拉哈塘凹陷奥陶系岩溶古地貌及岩溶缝洞体发育模式

发布时间：2018-10-15 13:26

【摘要】：针对塔北哈拉哈塘地区北部潜山风化壳岩溶区和南部埋藏岩溶区不同的地质特征,分别运用印模法和地层古构造与印模残差组合法恢复奥陶系古地貌和古水系。在此基础上,对4种不同古地貌环境条件下岩溶缝洞体发育特征及形成机理进行研究,建立了潜山风化壳岩溶区、上岩溶缓坡地、下岩溶缓坡地和岩溶盆地4种岩溶缝洞体发育模式。潜山风化壳岩溶区以发育表层岩溶缝洞系统为主;上岩溶缓坡地发育一间房组—鹰山组大型缝洞体及暗河管道系统;下岩溶缓坡地发育良一段—良二段和一间房组—鹰山组2套大型缝洞储集体;岩溶盆地沿断裂发育岩溶缝洞体。
[Abstract]:In view of the different geological characteristics of weathered crust karst area in the northern buried hill and buried karst area in the southern part of Harahatang area in northern Tarim Basin, the paleogeomorphology and the paleogeography of Ordovician and paleodrainage system were restored by using the impression method and the combination of stratigraphic paleotectonics and impression residue. On this basis, the development characteristics and formation mechanism of karst fissure cavities in four different paleogeomorphic environments are studied, and the karst area of buried hill weathering crust is established, and the upper karst gentle slope land is established. There are four kinds of karst fracture and cave development models in lower karst gentle slope land and karst basin. The karst area of weathering crust of buried hill is mainly composed of surface karst fracture and cave system, and the large joint-cave body and pipeline system of Yijianghingshan formation are developed on the upper karst gentle slope. There are two sets of large fracture-cavity reservoirs developed in the lower karst gentle slope land, namely, the second segment of the Liangyi section and the second member of the Liangliang-Yingshan formation, and the karst fault-cavity body is developed along the fault in the karst basin.
【作者单位】：中国地质大学环境学院;中国地质科学院岩溶地质研究所;中国地质科学院国土资源部岩溶动力学重点实验室;中国石油塔里木油田分公司勘探开发研究院;
【基金】：国家自然科学基金(41302122) 国家973项目(2011CB201001) 国土资源部公益性行业科研专项(201211082)
【分类号】：P618.13;P534.42

【相似文献】