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| 辽西地区中生代岩石圈结构与演化的有限元模拟 | |
| 引用本文： | 李茹,章大港,周瑶琪,赵俊猛.辽西地区中生代岩石圈结构与演化的有限元模拟[J].地学前缘,2006,13(6):64-71. |
| 作者姓名： | 李茹 章大港 周瑶琪 赵俊猛 |
| 作者单位： | 1. 中国石油大学,地球化学与岩石圈动力学开放实验室,山东,东营,257061;胜利油田,东胜精攻石油开发集团股份有限公司,山东,东营,257000 2. 中国石油大学,地球化学与岩石圈动力学开放实验室,山东,东营,257061 3. 中国地震局,地质研究所,北京,100083 |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 摘 要： | 利用大型通用有限元分析软件ANSYS简单模拟辽西地区中生代末期岩石圈动力学演化过程。为了与现今实际地质观测一致，我们分两步模拟了辽西中生代岩石圈的动力学演化。第一阶段，中国东部显著的地幔上升热柱导致本研究区壳-幔边界上升，岩石圈减薄，同时伴有少量断层发育；第二阶段，地幔热柱上涌活动逐渐减弱，地表产生沉降。这一地质模型可重塑与现代观测一致的裂谷沉降、裂谷侧翼地形、壳-幔边界隆升。研究结果表明：ANSYS软件及有限元方法在岩石圈动力学数值模拟领域是一个非常有效的分析工具，具有非常广阔的应用前景。今后将建立与实际情况更吻合的岩石圈结构模型，真正动态地实现辽西中生代盆地区岩石圈结构的演化过程模拟。 |
| 关 键 词： | 有限元 岩石圈结构 辽西地区 中国东北 |
| 文章编号： | 1005-2321（2006）06-0064-08 |
| 收稿时间： | 2006-03-09 |
| 修稿时间： | 2006-06-28 |
Finite element modeling of the Mesozoic lithosphere structure and evolution of West Liaoning, Northeast China |
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| LI Ru,ZHANG Da-gang,ZHOU Yao-qi,ZHAO Jun-meng.Finite element modeling of the Mesozoic lithosphere structure and evolution of West Liaoning, Northeast China[J].Earth Science Frontiers,2006,13(6):64-71. | |
| Authors: | LI Ru ZHANG Da-gang ZHOU Yao-qi ZHAO Jun-meng |
| Abstract: | Using general finite element program ANSYS, we simulate a dynamical evolution process of the lithosphere of west Liaoning, northeast China in the Late Mesozoic. In accordance with geological field evidence, we have modelled this evolution to have occurred in two stages. The first stage was characterized by a remarkable uplift of the crust-mantle boundary, due to asthenospheric upwelling in east China. This was accompanied by a insignificant amount of faulting and lithosphere thinning. In the second stage, asthenospheric mantle upwelling decreased gradually, resulting in surface subsidence. Our study indicates that, ANSYS is a very effective analytic tool for the numerical simulation field of the lithosphere dynamics. In the future, we aim to set up a more practical model of lithosphere structure in order to conduct studies on processes of the dynamic evolution of the lithosphere in this region during the Mesozoic. |
| Keywords: | finite element lithosphere structure West Liaoning Northeast China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |