北黄海中、新生代盆地:残留盆地还是叠合盆地?

Meso-Cenozoic North Yellow Sea:Residual Basin or Superimposed Basin?

根据最新调查资料并结合区域构造背景,运用盆地类型分析方法和识别标志,探讨了北黄海中、新生代盆地类型。基于盆地边缘相、沉积减薄、盆地面积和形态、沉积物镜质体反射率等方面的证据,认为现今呈现的北黄海中、新生代盆地不是残留盆地。通过盆地三大构造层的发育、自成体系的含油气系统、边界断裂的多期活动性、中新生代沉积中心的迁移性、不同成盆期具有不同的盆地结构以及两期伸展成盆与一期坳陷成盆的垂向叠置等方面的综合分析,确定北黄海中、新生代盆地为叠合型盆地。

Based on the latest survey data and regional tectonic setting, this paper discussed the type of the Meso-Cenozoic North Yellow Sea basin using the analytical method and criteria of basin. Evidence of basin- margin facies, sediment thinning, area and morphology of basin, and vitrinite reflectance of sediments, indicates that the Meso-Cenozoic North Yellow Sea basin present nowadays is not a residual basin. Comprehensive analysis of three developed structural layers, petroleum system in their style, polycyclic activities of marginal faults, migration of Meso-Cenozoic sedimentation center, various basin structures in different basin period, and vertical stacking about two terms extension basining and one term depression basining suggests that the Meso-Cenozoic North Yellow Sea basin belongs to a superimposed basin.