准噶尔盆地南缘大龙口地区构造建模
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摘要
大龙口地区位于准噶尔盆地南缘东段,处于盆山结合的前陆冲断带上,构造形态十分复杂。通过与邻区相似构造样式的对比研究,结合野外露头资料,充分利用最新二维地震资料及重力资料解析成果,建立起大龙口地区构造模型的总体框架。研究表明:大龙口地区的构造样式以叠瓦冲断和反向冲断最为常见,位于以二叠系为主的第一滑脱楔之上。
Dalongkou region locates at the east section in the southern margin of Junggar Basin, and lies in the basin-range junction of foreland thrust belt, which has very complicated structural form. Through the comparative study of the similar structural styles in adjacent regions, combing with the outcrop data, taking full advantage of the latest two-dimensional seismic data analysis and interpretation result of gravity-data, we have established the overall framework of structure model in Dalongkou Region. The result shows that the most common structural styles in Dalongkou Region are imbricate thrust and reverse thrust, which are located in the first slip wedge mainly in Permian.
Dalongkou region locates at the east section in the southern margin of Junggar Basin, and lies in the basin-range junction of foreland thrust belt, which has very complicated structural form. Through the comparative study of the similar structural styles in adjacent regions, combing with the outcrop data, taking full advantage of the latest two-dimensional seismic data analysis and interpretation result of gravity-data, we have established the overall framework of structure model in Dalongkou Region. The result shows that the most common structural styles in Dalongkou Region are imbricate thrust and reverse thrust, which are located in the first slip wedge mainly in Permian.
引文
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[3]熊翥.我国西部山前冲断带油气勘探地震技术的几点思考[J].勘探地球物理进展,2005,28(1):26-31.
[4]温声明,王贵重,程明华,等.南天山山前冲断带的构造样式及成因探讨[J].新疆地质,2006,24(1):24-29.
[5]高鸿斌.喀什凹陷新生代对称型前陆盆地分析[J].断块油气田,2000,7(4):16-20.
[6]刘和甫,梁慧社,蔡立国,等.川西龙门山冲断系构造样式和前陆盆地演化[J].地质学报,1994,68(2):100-117.
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