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马尼特物陷内有五个地震反射构造层:拗陷顶部地震反射构造层因埋藏较浅,仅见底部密集反射,与下伏地震反射构造层为角度不整合;巴彦花地震反射构造层是空白反射段和密集反射段组成的四次韵律,在拗陷东部,它与下伏地震反射构造层的角度不整合关系明显;巴达拉胡地震反射构造层上部是空白反射段,下部是密集反射段,它超覆在下伏地震反射构造层之上;前巴达拉胡地震反射构造层具有杂乱反射特征,它填充在拗陷底部;基岩地震反射构造层以内部无反射为特征。经钻井标定的地震反射构造层揭示了各时期的沉积相,各构造层互相间的关系记载了马尼特拗陷地质发展历史的三个阶段:第一阶段拗陷经历了早、中侏罗世强烈火山活动,接受了一套火成岩沉积后,进入了晚侏罗世稳定的河、湖相沉积;第二阶段早白垩世强烈的断、褶运动使上休罗系遭到侵蚀,在改变沉积中心的地貌上,接受了稳定发展的河、湖相沉积;第三阶段晚白垩世拗陷回返,结束了南北分带的地貌,形成了统一的简单洼地,接受了拗陷末期的沉积。
There are five seismic reflection tectonic layers in Manittu depression: the top seismic reflection tectonic layer in the depression is not angularly integrated with the underlying seismic reflection tectonic layer due to the shallow burial, only the bottom intensive reflection, and the Bayanghua seismic reflection tectonic layer Is the fourth rhythm composed of blank reflector and dense reflector. In the eastern part of the depression, it has an obvious relationship with the angle of the underlying seismic reflection tectonic layer. The upper part of the Badalahu seismic reflection tectonic layer is a blank reflector, and the lower part is Dense reflection section overlying the underlying seismic reflection tectonic layer; the former Badalahu seismic reflection structural layer has a disorganized reflection feature that fills the bottom of the depression; and the bedrock seismic reflection structural layer is characterized by no internal reflection. The well-calibrated seismic reflection tectonic layer reveals the sedimentary facies of each period. The relationship between the tectonic layers records the three stages of the geological development of the Manitot Depression. In the first stage, the depression experienced the early and middle Jurassic During the intense volcanic activity of the world, after accepting a set of igneous deposits, it entered a stable river and lacustrine sedimentation in the Late Jurassic. In the second stage, the intensive fracture and fold movement of the Early Cretaceous eroded the Upper Hulunbeir. After the change Sedimentary center of the landscape, accepted the steady development of the river, lacustrine deposition; the third stage of the Late Cretaceous depression return, ending the North-South zoning, forming a unified simple depression, accepted the late deposition of the depression.