龙门山前中段地震剖面的构造分析
|
摘要
磁峰场-鸭子河构造属于青藏高原东缘的龙门山山前中段推覆构造单元,其下盘隐伏着众多的油气构造圈闭, 是前陆盆地山前油气勘探的重要目标。应用现代构造地质学的几何变形解析方法,来搭建磁峰场-鸭子河地震勘探区地表至深部的构造变形类型、构造叠加组合样式以及相应的构造模型;以正演平衡地质剖面技术为手段,验证构造模型的合理与否,同时再现龙门山中段山前的构造演化过程;在构造建模的基础上对磁峰场-鸭子河构造进行了三维构造分析,配以计算机可视化成图技术,构建出三维构造模型。
Cifengchang-Yazihe structure is the thrust unit of middle section of Longmen Mountain anterior area adjacent to the east margin of Tibetan plateau. There were plenty of perdu hydrocarbon tectonic traps in its footwall, and it's the very important exploration destination on the hill side of foreland basin. By applying the geometry deformation methods of modern tectonics, we built up the structure deform types and assemble style of Cifengchang-Yazihe seismic exploration area from the deep subterranean to the ground, so does the corresponding structure mode. By means of geologic profile forward modeling technique, we validated the rationality of the structure mode, represented the process of structure evolution happened in the anterior area of middle section of Longmen Mountain. Using visible computer mapping techniques, we analyzed the three-dimensional characters of two dimensional seismic work area, and built the threedimensional mode.
Cifengchang-Yazihe structure is the thrust unit of middle section of Longmen Mountain anterior area adjacent to the east margin of Tibetan plateau. There were plenty of perdu hydrocarbon tectonic traps in its footwall, and it's the very important exploration destination on the hill side of foreland basin. By applying the geometry deformation methods of modern tectonics, we built up the structure deform types and assemble style of Cifengchang-Yazihe seismic exploration area from the deep subterranean to the ground, so does the corresponding structure mode. By means of geologic profile forward modeling technique, we validated the rationality of the structure mode, represented the process of structure evolution happened in the anterior area of middle section of Longmen Mountain. Using visible computer mapping techniques, we analyzed the three-dimensional characters of two dimensional seismic work area, and built the threedimensional mode.
引文
[1] Eric,Kirby, Peter W Reiners,et al. Late Cenozoic evolution of the eastern margin of the Tibetan Plateau[J].Tec- tonics,2002,21(1):1-20．
[2] 郭正吾,邓康龄．四川盆地形成与演化[M]．北京:地 质出版社,1996．
[3] Chaelesworth H A K,Gagnon L G. Intercutaneous wedges , the triangle zone, and structural thickenibg of the Mynheer coal seam at Coal Valley in the Rocky Mountain Foothills of central Alberta [J]. Bulletin of Canadian Petroleum Geology, 1985,33:22-30.
[4] John Suppe. Geometry and kinematics of faul - bend folding [J]. American Journal of Science, 1983,283:684 -721.
[5] Paul A Mackay, John L Varsek. Triangle zones and tectonic wedges:an introduction[J]. Bulletin of Canadian Petroleum Geology, 1996,44(2):1 -5.
[6] Shankar Mitra. Fold - accommodation faults [J]. AAPG, 2002,86(4):671-693.
[7] 陈伟．平衡地质剖面的计算机制作与应用[M]．北京: 科学出版社,1993．
[9] 汪泽成,赵文智．四川盆地构造层序与天然气勘探 [M]．北京:地质出版社,2002．
[2] 郭正吾,邓康龄．四川盆地形成与演化[M]．北京:地 质出版社,1996．
[3] Chaelesworth H A K,Gagnon L G. Intercutaneous wedges , the triangle zone, and structural thickenibg of the Mynheer coal seam at Coal Valley in the Rocky Mountain Foothills of central Alberta [J]. Bulletin of Canadian Petroleum Geology, 1985,33:22-30.
[4] John Suppe. Geometry and kinematics of faul - bend folding [J]. American Journal of Science, 1983,283:684 -721.
[5] Paul A Mackay, John L Varsek. Triangle zones and tectonic wedges:an introduction[J]. Bulletin of Canadian Petroleum Geology, 1996,44(2):1 -5.
[6] Shankar Mitra. Fold - accommodation faults [J]. AAPG, 2002,86(4):671-693.
[7] 陈伟．平衡地质剖面的计算机制作与应用[M]．北京: 科学出版社,1993．
[9] 汪泽成,赵文智．四川盆地构造层序与天然气勘探 [M]．北京:地质出版社,2002．
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心