黄骅坳陷孔南地区孔一、孔二段构造沉积演化

Tectonic-sedimentary evolution of the first and second members of the Kongdian Formation in southern Kongdian,Huanghua depression

关键词:  黄骅坳陷|孔南地区|孔一段|孔二段|沉积演化

Key words:  Huanghua depression|southern Kongdian|first member of the Kongdian Formation|second member of the Kongdian Formation|sedimentary evolution

摘要:

笔者针对黄骅坳陷孔南地区古地理格局认识上存在的问题,通过沉积相分析和古地理格局恢复,证实孔店凸起-孔店构造带是从孔一段沉积早期开始发育的,在孔一段沉积晚期形成其雏形;孔二段沉积时期孔南地区为拗陷盆地。孔一段沉积时期,整个孔南地区都处于沉降阶段,而孔店凸起-孔店构造带则是一个沉降相对缓慢的地带,在地形上并不是相对隆起区。

Abstract:

The sedimentary facies analysis and Palaeogeographic reconstruction have disclosed that the Kongdian uplift-Kongdian tectonic zone was initiated during the early stage of the deposition of the first member of the Kongdian Formation,and came into being during the late stage of the deposition of the first member of the Kongdian Formation.The southern part of Kongdian was once a down-warped basin during the deposition of the second member of the Kongdian Formation,whereas during the deposition of the first member of the Kongdian Formation,this area was in the subsidence stage and the Kongdian uplift-Kongdian tectonic zone was a slowly subsiding zone rather than a relatively uplifted area.