| 谭凯旋,谢焱石,熊正为,杨建明.地壳演化和变形的非线性动力学:3云南兰坪盆地研究[J].南华大学学报(自然科学版),2004,(4):1~6.[.Nonlinear Dynamics of Evolution and Deformation of the Earth Crust Study on Lanping Basin,Yunnan,China-Series 3[J].Journal of University of South China(Science and Technology),2004,(4):1~6.] |
| 地壳演化和变形的非线性动力学:3云南兰坪盆地研究 |
| Nonlinear Dynamics of Evolution and Deformation of the Earth Crust Study on Lanping Basin,Yunnan,China-Series 3 |
| 修订日期：2004-09-15 |
| DOI： |
| 中文关键词: 动力学模拟 渗透率 兰坪盆地 地壳演化 地壳变形 非线性动力学 |
| 英文关键词:dynamic simulation,permeability,fluid and mineralization,Lanping basin |
| 基金项目:国家自然科学基金项目(70171057和49702024). |
| 谭凯旋 谢焱石 熊正为 杨建明 |
| 南华大学建筑工程与资源环境学院,湖南衡阳421001 |
| 摘要点击次数: 836 |
| 全文下载次数: 2 |
| 中文摘要: |
| 滇西兰坪盆地是一个重要的中新生代陆相盆地，产有丰富的铅锌铜银矿产资源．综合考虑多因素和多过程的非线性耦合与反馈作用对兰坪盆地的沉降、沉积、岩石渗透性、流体和成矿作用的演化过程进行了数值模拟．随着盆地沉降和地层沉积，盆地的演化是一个复杂的非线性动力学过程，岩石渗透性随时间和空间发生复杂的演化，至主成矿期(喜山期)发育三合洞组、花开佐组、景星组和云龙组等4个高渗透性层位．而成为4个主要成矿层位．岩石与断裂构造的耦合作用可产生高的断裂渗透率，并且不同岩石的断裂渗透率的演化特征存在显著差异，导致成矿受断裂与岩性的耦合控制．由于盆地演化的非线性和非均匀性，导致流体成矿作用只能在最有利的局部层位和局部地段发生。 |
| 英文摘要: |
| The Lanping basin in west Yunnan,China,is an important Meso-Cenozoic continental facies basin, which is an abundant mineral resource of Pb,Zn,Cu,Ag,and so on. The evolution process of basin subsidence,sedimentation, permeability,fluid and mineralization is simulated is comprehensively considering the nonlinear coupling and feedback among many factors and processes. With the subsidence and sedimentation,the evolution of basin was a complex and nonlinear dynamic process. The permeability of rocks evolved complicatedly with time and space, and 4 high permeable layers were formed during main metallogenic epoch (Himalayan) in Sanhedong Formation,Huakaizuo Formation,Jingxing Formation and Yunlong Formation which are 4 main ore-bearing strata. The coupling between rock and faulting could bring about high fracture permeability. The character of evolution of fracture permeability in different rocks was notably different,and so,the ore-forming was controlled by the coupling of rock and fault. Because of the nonlinear inhomogeneous evolution of the basin, the fluid mineralization only occurred in the most favorable part strata and part regions. |
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