| 贵州二叠系茅口组顶部锰矿沉积特征及矿床成因研究 |
| |
| 引用本文： | 杨瑞东,程玛莉,高军波,徐海,李军,陈军,刘坤.贵州二叠系茅口组顶部锰矿沉积特征及矿床成因研究[J].地质学报,2018,92(4):804-816. |
| |
| 作者姓名： | 杨瑞东 程玛莉 高军波 徐海 李军 陈军 刘坤 |
| |
| 作者单位： | 贵州大学资源与环境工程学院;贵州理工学院 |
| |
| 基金项目： | 中国科学院重大资助项目 |
| |
| 摘 要： | 通过对遵义、纳雍营盘等地含锰岩系沉积特征及沉积地球化学特征研究,结果表明,锰矿体形态主要以层状、似层状、透镜状、脉状产出,具有角砾状构造、递变层理等,常夹硅质岩和凝灰岩,具有热水喷流沉积构造特征。锰矿层位于玄武岩之下,夹于茅口组灰岩顶部,说明锰矿成矿在玄武岩喷发之前。含锰岩系中的矿物组合有浸染状黄铜矿,黄铁矿,重晶石,天青石,菱锰矿、钙菱锰矿、锰方解石、黄铜矿、蓝铜矿、褐铁矿、绿泥石、石英及其他碳酸盐岩矿物等,这些矿物组合与热水沉积矿物组合类似。对含锰岩系进行微量元素、稀土元素、碳同位素分析测试表明,含锰岩系富集As、Co、Cu、Cr、Mo、Ni、Pb、U和V等元素,Fe/Ti、(Fe+Mn)/Ti及Al/(Al+Fe+Mn)比值,Fe-Mn-(Cu+Co+Ni)×10三角图解等均显示锰矿属于热水沉积成因。锰矿石碳同位素值δ~(13) C介于+4.17‰~-18.53‰,氧同位素δ~(18) O介于-6.98‰~-10.05‰显示,碳同位素组成具有热水沉积特征。含锰岩系稀土配分曲线与峨眉山玄武岩稀土配分曲线类似,表明锰矿成矿物质来源与峨眉地幔热柱密切相关。
|
| 关 键 词： | 地球化学 沉积特征 锰矿成矿 茅口组 贵州 |
| 收稿时间： | 2017/2/21 0:00:00 |
| 修稿时间： | 2017/6/19 0:00:00 |
The Sedimentary Characteristics and Origin of Manganese Deposit in the Middle Permian Maokou Formation in Guizhou, China |
| |
| YANG Ruidong,CHENG Mali,GAO Junbo,Xu Hai,LI Jun,CHEN Jun and LIU Kun.The Sedimentary Characteristics and Origin of Manganese Deposit in the Middle Permian Maokou Formation in Guizhou, China[J].Acta Geologica Sinica,2018,92(4):804-816. |
| |
| Authors: | YANG Ruidong CHENG Mali GAO Junbo Xu Hai LI Jun CHEN Jun and LIU Kun |
| |
| Institution: | 1) College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou, China,2) Guizhou Institute of Technology, Guiyang, 550003, Guizhou, China,1) College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou, China,1) College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou, China,1) College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou, China,1) College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou, China and 2) Guizhou Institute of Technology, Guiyang, 550003, Guizhou, China |
| |
| Abstract: | |
| |
| Keywords: | Geochemistry Sedimentary characteristics Manganese deposit origin Maokou Formation Guizhou Province |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地质学报》浏览原始摘要信息 |
| 点击此处可从《地质学报》下载免费的PDF全文 |
|
