普安县丁头山铅锌成矿带元素地球化学特征及其地质意义  

Geochemical Characteristics of Elements in the Dingtoushan Lead-zinc Metallogenicbelt,Pu'an

作　　者：蔡冰堰[1] 彭红[1] 陶平[1,2] 李明琴[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550025 [2]贵州省地质调查院,贵州贵阳550004

出　　处：《贵州大学学报（自然科学版）》2015年第5期33-37,共5页Journal of Guizhou University:Natural Sciences

基　　金：贵州省地矿局地质科研项目"水城-紫云-南丹晚古生代裂陷作用与主要矿产的关系"(2009)

摘　　要：本文对贵州普安丁头山铅锌成矿带的矿石和围岩采样并测试其中的微量元素及稀土元素含量,以探讨其元素地球化学特征及其揭示的地质意义。研究结果表明:该区Pb、Zn表现为互不伴生现象。其中,锌矿体中的Zn既有陆源风化剥蚀碎屑物中的Zn,又有大陆地幔中的Zn。在石炭纪南丹组的沉积时期就有Zn的初步富集,期间伴有热水沉积作用,且于成岩期后有构造热液叠加改造成矿;铅矿体主要为构造热液活动带来的含Pb成矿流体,经低温热液成矿作用形成。By analyzing the elements content in the mineral rocks and country rocks of Dingtoushan Pb-Zn metal- logenic belt in Puhn of Guizhou, we try to understand the geochemical characteristics and geological evolution of this geologic setting. The results show, the Lead and Zinc elements are not associated. Specifically, there are two types of zinc source in the zinc deposits, one is from the terrigenous clastic rocks, the other is from the man- de. In the Carboniferous of Nandan formation deposition period, the zinc was getting the first accumulation, and accompanying with the hydrothermal sedimentation. After the post-diagenetic period, this ore deposit got the hy- drothermal superimposition. It can be concluded that the lead mineral rock was formed by the low temperature hydrothermal sedimentation process with the source coming from the tectonic hydrothermal activity.

关 键 词：元素地球化学特征 铅锌成矿带 丁头山 普安县 贵州 

分 类 号：P618.4[天文地球—矿床学]