| 云南白秧坪矿化集团中区成矿构造动力学分析 |
| 点此下载全文 |
| 引用本文：邵兆刚,孟宪刚,冯向阳,朱大岗.2002.云南白秧坪矿化集团中区成矿构造动力学分析[J].地球学报,23(3):201-206. |
| DOI： |
| 摘要点击次数: 2471 |
| 全文下载次数: 2129 |
|
| 基金项目:中国地质调查局大地调项目“云南兰坪白秧坪铜、银、铅、锌、钴矿化集中区评价”(编号K3.1.7) |
|
| 中文摘要:云南白秧坪帮化集中区位于兰坪－思茅印支燕山、喜马拉芽期成矿带的北段，成矿以中生代海相过渡到际相的碳酸岩建筑、碎屑岩建筑夹火山岩建造为基础，喜马拉芽期构造推覆有热液改造为主导作用。通过野外地质调查，利用共轭剪切破裂解析出断块掀斜前后的构造动力学特征。结果表明，本区喜马拉芽期构造运动有3期，早期表现为云龙－江城褶皱系边部发生较强烈褶皱变形，盆地内部以挠曲变形为主；中期为脆性变形期，整个褶皱出现SN向冲断系统，前期褶皱部分得以强化，其余地区广泛出现宽缓褶皱；晚期为松驰－挤压交替的调整期。 |
| 中文关键词:云南兰坪白秧坪 应力 构造动力学 |
| |
| Analysis on the Ore-forming Geodynamics of the Baiyangping Ore-concentrated Field, Yunnan Province |
|
|
| Abstract:The Baiyangping ore concentrated field is located in the northern segment of the Lanping Simao India Yanshanian Ximalayaian ore forming belt. Based on the field measurement and reconstruction of the rock's tilting history, the ore forming geo dynamics is analyzed by the method of anti graphic solution using the sprout conjugate joints. The result shows that the Ximalayaian tectonic movement can be divided into three stages. The first stage manifested by the strongly folding in the edge of the Yunlong Jiancheng fold system and bending inside basin was followed by the second stage deformation, brittle deformation shown as the formation of SN trending thrust in the whole fold system and wide-spread folds outside of the basin. The last stage deformation was cha racteristic by regional extension and compression in turn. |
| keywords:Baiyangping ore-concentrated field stress ore-forming geodynamics |
| 查看全文 查看/发表评论 下载PDF阅读器 |
