| 施力方式对半地堑反转构造变形特征影响的物理模拟实验研究 |
| |
| 引用本文： | 马宝军,漆家福,于福生,杨雪.施力方式对半地堑反转构造变形特征影响的物理模拟实验研究[J].大地构造与成矿学,2006,30(2):174-179. |
| |
| 作者姓名： | 马宝军 漆家福 于福生 杨雪 |
| |
| 作者单位： | 中国石油大学石油天然气成藏机理教育部重点实验室,北京,102249 |
| |
| 摘 要： | 根据断层的上下盘施力方式的不同设计了两组实验,以探讨在刚性边界条件下的半地堑反转构造的变形特点。实验结果表明(1)在自由边界基底驱动下形成的盆地反转规模较大,刚性边界处会沿原断层发生反转,而在自由端断层不会反转,但会形成深部低角度逆冲滑脱断层;(2)在刚性下盘侧向驱动下很小的挤压量就会形成盆地的反转,但是反转的范围较小,随着原设边界断层的角度由小到大,盆地内的断层会发生由刚性边界处单侧发生反转到两侧边界断层发生近对称式反转的变化;(3)实验结果证实了辽河坳陷西部凹陷反转构造是在刚性下盘为主动盘挤压变形下形成的。
|
| 关 键 词： | 物理模拟 施力方式 半地堑 反转构造 辽河坳陷 |
| 文章编号： | 1001-1552(2006)02-0174-06 |
| 收稿时间： | 2005-05-21 |
| 修稿时间： | 2005-08-01 |
THE IMPACT OF FORCING MECHANISM ON THE DEFORMATION CHARACTERISTICS OF THE INVERSION STRUCTURES IN HALF-GRABENS, AN INSPIRATION FROM PHYSICAL MODELING |
| |
| MA Baojun,QI Jiafu,YU Fusheng,YANG Xue.THE IMPACT OF FORCING MECHANISM ON THE DEFORMATION CHARACTERISTICS OF THE INVERSION STRUCTURES IN HALF-GRABENS, AN INSPIRATION FROM PHYSICAL MODELING[J].Geotectonica et Metallogenia,2006,30(2):174-179. |
| |
| Authors: | MA Baojun QI Jiafu YU Fusheng YANG Xue |
| |
| Institution: | Key Laboratory for Hydrocarbon Accumulation Mechanism Study under the Education Ministry, Beifing 102249, China |
| |
| Abstract: | Two groups of experiments are designed to initiate a detailed study of the deformation characteristics of the inversion structures in rigid conditions based on the force mechanism for the upside and downside blocks of the faults. Results of the experiments show that: (1) larger scales of inversion under the driving force from the free-boundary basement and inversion generally occur at the rigid boundary along the original fault. However, at the free end, no inversion occurs, but low-angle thrust fault could be developed. (2) Inversion could be developed under minor lateral force, but the scale of inversion is usually small. With the increase of the angle of the original fault, inversion tends to occur along a single side at the rigid boundaries. (3) The experiments also suggest that inversion structures in the west sag of the Liaohe depression were developed under the compression deformation forces at the downside blocks of the rigid faults. |
| |
| Keywords: | physical modeling force mechanism half-graben inversion structure Liaohe sag |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
