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针对东岭地区断陷层火石岭组地层分布争议,分析前人解释中可能存在的问题,结合古生物孢粉组合特征,岩性组合特征,区域构造演化特征、构造解释及与周遭断陷盆地类比等方法,建立东岭地区新的地质解释模型,认为火石岭组发育于裂陷早期规模较局限的断陷湖盆内,且伴随火山喷发,沙河子组沉积期裂陷进一步扩展,形成多个沙河子期断陷且彼此独立,为东岭地区断陷层油气勘探指出方向。
According to the controversy over the stratigraphic distribution of the Huoshiling Formation in the fault zone of Dongling area, this paper analyzes the possible problems existing in the interpretation of the predecessors. Based on the features of the paleontologic sporopollen assemblages, lithologic assemblages, regional tectonic evolution, tectonic interpretation and analogies with the surrounding fault-depressed basins And other methods to establish a new geologic interpretation model in Dongling area. It is considered that the Huoshiling Formation is developed within the fault-controlled faulted basin in the early stage of the rifting. With the volcanic eruption, the rifting in the Shahezi Formation further expanded to form multiple The Shahezi sub-rift and independent of each other pointed out the direction of oil and gas exploration in the fault zone in Dongling area.