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地层对比是盆地演化和构造运动分析的基础,本文从地层对比的角度,弄清登娄库组沉积特点来论述登娄库组属于断陷沉积。伏龙泉断陷登娄库组沉积四段,梨树断陷登娄库组沉积二段,沉积差异大,地层沉积时受断裂系统控制明显,属于断陷层;而泉头组沉积时,泉一段底部沉积特征具有一致性,断陷之间可对比,地层沉积稳定,符合坳陷地层沉积特点,属于坳陷层。
Stratum contrast is the basis of basin evolution and tectonic movement analysis. From the aspect of stratigraphic contrast, this paper clarifies the sedimentary characteristics of Denglouku Formation to discuss that Denglouku Formation belongs to faulted sediments. The deposition of Denglouku Formation in Fulongquan fault zone and the deposition of Denglouku Formation in Lishu fault depression have large differences in deposition, which are controlled by the fault system when the strata are deposited. A section of bottom sedimentary features are consistent, contrast between faults, stratum sedimentation stable, consistent with the sedimentary characteristics of the depression, belonging to the depression layer.