黄鑫,陈开远,邓永辉
HUANG Xin,CHEN Kaiyuan,DENG Yonghui

• 1:中国地质大学能源学院

摘要(Abstract)：

T_2断层是松辽盆地南部泉四段顶部地层的代表性构造。利用三维地震精细解释、地震相识别及相干体切片等技术找到了T_2断层在盆地构造反转阶段受到挤压而改造的证据,总结出T_2断层在平面、剖面上的组合特征。通过断层形态、产状、规模的分析对比,将T_2断层细分为弯折断层、旋转断层、大型断层和平直断层,并分阶段进行地质构造恢复、地层回剥。反演出的各类型T_2断层演化过程表明:嫩江组沉积时期挤压作用强烈,T_2断层受自身产状和岩层能干性等影响发生显著变化。在分析T_2断层演化过程和变形机制的基础上建立了松辽盆地T_2断层的构造演化模式。
Fault T_2 is the representative structure at the top of Member Q4 formation in South Songliao Basin,the evidences for Fault T_2 deformed by the strong compression during the tectonic inversion stage of the basin are found by means of 3D fine seismic interpretation,seismic facies identification,coherence slices and so on,and moreover the combined characteristics in the plane and section for the fault are summarized.Through the analysis and contrast of the fault configurations,occurences and scales,the fault is subdivided into folded fault,rotational fault,huge fault and straight fault.And furthermore the restoration of the geological structures and stratigraphic re-stripping are engaged step by step.The evolution processes of Fault T_2 of each type inverted show that the compression at the stage of Nenjiang sedimentation is very strong,there are much remarkable changes for the fault due to itself occurences and rock strength differential and so forth.On the basis of the analyses of the evolution process and deformed mechanism of Fault T_2,the structural evolving models of the fault are established.

关键词(KeyWords)： 松辽盆地南部;T_2断层;平衡剖面;构造演化
South Songliao Basin;Fault T_2;balancing section;tectonic evolution

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 黄鑫,陈开远,邓永辉
HUANG Xin,CHEN Kaiyuan,DENG Yonghui

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