Investigation of the Genesis of Granite in the Hardat Tolgoi Pb-Zn Ore Deposit, Inner Mongolia
详细信息
- 责任者：Chen Jinquan (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Xu Zhaowen
- 刊名：Geological Journal of China Universities
- 出版年：2013
- 卷期：19(3)
- 关键词：铅锌矿床 ; lead-zinc deposit ; 花岗岩 ; granite ; 内蒙古 ; Inner Mongolia
- 页码：p.415-424
- 图表：9 illus., 5 tables, 32 refs.
- 分类号：1001
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
The Hardat Tolgoi Pb-Zn deposit is a medium-sized Pb-Zn deposit recently found in Erenhot-Dongwuqi polymetallic ore belt along the suture zone between the North China plate and the Siberia plate.The granite relevant to the Pb-Zn mineralization in the orefield is a concealed pluton.The LA-ICP-MS zircon U-Pb dating indicates that the granite was emplaced at 125±4.3 Ma and thus was the products of"Yanshanian"magmatism.Detailed geochemical data show that the granite is composed of weakly peraluminous(A/CNK= 0.99-1.08) rocks with low iron,high silicon,and high alkali contents(mostly Nafeldspar="" formed="" from="" granite="" high-field="" in="" is="" isotopic="" large-ion="" lithophile="" m="" melting="" mesoproterozoic="" nb="" nd="" of="" partial="" pattern="" post-orogenic="" rb="" ree="" results="" show="" shows="" span="" sr.the="" strength="" strong="" such="" suggest="" tectonic="" tetrad="" that="" the="" to="" type="" upper="" was="" with="">
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