| 黑龙江翠宏山铅锌多金属矿区花岗岩锆石SHRIMP U-Pb测年及其地质意义 |
| |
| 关键词:granite post-orogeny extensional system mineralization age Late Indosinian-Early Yanshanian Pb-Zn polymetallic deposit |
| 基金项目:国土资源大调查项目(编号: 200310200052) |
|
| 摘要点击次数: 3790 |
| 全文下载次数: 4944 |
| 摘要: |
| Zircon SHRIMP U-Pb Dating of Granite in the Cuihongshan Polymetallic Deposit and Its Geological Implications |
| The Cuihongshan Pb-Zn polymetallic deposit has been regarded as a skarn type ore deposit that occurs in the contact zone between the granite and the metamorphic rocks of the Qianshan Formation of the Lower Cambrian xilin Group. This study has revealed that the granitic rocks are composed mainly of monzogranites, alkali-feldspar granites with the characteristics of both “I” type granite and “A” type granite. The granite was generated in the post-orogeny extensional system. Besides, the magmatism of these rocks had a very close relationship with the Pb-Zn polymetallic mineralization. Zircon SHRIMP U-Pb dating shows that the formation ages of two monzonitic granite samples in the Cuihongshan ore deposit are 192.8±2.5Ma and 199.0±3.1Ma, respectively. It is thus suggested that the mineralization age of the Cuihongshan Pb-Zn polymetallic deposit is Late Indosinian-Early Yanshanian. |
| SHAO Jun,LI Xiu-rong,YANG Hong-zhi.2011.Zircon SHRIMP U-Pb Dating of Granite in the Cuihongshan Polymetallic Deposit and Its Geological Implications[J].Acta Geoscientica Sinica,32(2):163-170. |
| 查看全文 查看/发表评论 下载PDF阅读器 |