| 朱建德.下雷-东平锰矿带矿床特征和成因探讨[J].地质与勘探,2016,52(5):846-853 |
| 下雷-东平锰矿带矿床特征和成因探讨 |
| Characteristics and genesis of the deposits in the Xialei-Dongping manganes ore belt of Guangxi Province |
| 投稿时间：2016-04-08 修订日期：2016-08-18 |
| DOI： |
| 中文关键词: 下雷-东平锰矿带 锰矿类型 矿床特征 成因探讨 |
| 英文关键词: Xialei-Dongping Mn-deposit belt, two types of Mn-deposits, ore deposit characteristics, discussion of genesis |
| 基金项目:国家科技支撑计划课题（2011BAB04B10）、国家自然科学基金项目(41372097)及南京大学国家金属矿产开放实验室项目资助 |
|
| 摘要点击次数: 2339 |
| 全文下载次数: 93 |
| 中文摘要: |
| 下雷-东平锰矿带是我国重要的锰矿矿集区。在矿集区典型锰矿床的野外工作基础上，对含锰岩系和矿石开展了岩石学、岩石化学、微量元素地球化学分析研究，比较了同一锰矿带的下雷式、东平式两类锰矿床特征。结合前人区域构造资料，探讨了下雷式、东平式两类锰矿成因。认为下雷式锰矿形成于被动大陆边缘，热水作用参与了锰矿的形成；而东平式锰矿形成于被动大陆边缘向前陆盆地过渡带，成矿过程中火山活动强烈，推测东平锰矿的沉淀富集作用与海底火山喷发具有一定的相关性。 |
| 英文摘要: |
| The Xialei-Dongping manganese ore belt is an important ore concentration area in China. Based on field work on the typical Mn-deposits, we have conducted research on petrological characteristics, major element content, and trace element content of ore-bearing formation. We compared the characteristics of Xialei-type manganese deposits and Dongping-type manganese deposits which formed in the same ore-forming belt. Combined with regional tectonic data from previous studies, we explored the genesis of the two types of deposits. Our research suggest that the Xialei-type Mn-deposits formed in a passive continental margin, where hydrothermal activity played an important role in the formation of Mn-deposits, while the Dongping-type Mn-deposits were generated in a transition from a passive continental margin to a foreland basin where volcanic activity was intensive. We infer that the formation of the Dongping-type Mn-deposits was related to volcanic eruptions at the seafloor. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
