Mineralization, alteration, structure, and Re-Os age of the Lanjiagou porphyry Mo deposit, North China Craton
文献类型：期刊论文
| 作者 | Zeng, Qingdong; Chu, Shaoxiong; Liu, Jianming; Sun, Shouke; Chen, Weijun |
| 刊名 | INTERNATIONAL GEOLOGY REVIEW
 |
| 出版日期 | 2012 |
| 卷号 | 54期号:10页码:1145-1160 |
| 关键词 | porphyry molybdenum Re-Os dating Lanjiagou China North China Craton |
| ISSN号 | 0020-6814 |
| DOI | 10.1080/00206814.2011.626575 |
| 文献子类 | Article |
| 英文摘要 | Lanjiagou is a porphyry Mo deposit in terms of its alteration zonation and mineralization associated with granitic intrusions and predominance of quartz vein-hosted molybdenum mineralization. It is the largest Mo deposit in North China Craton (404,000 t). There is an intimate spatial/temporal association between all stages of mineralization and Early Jurassic granitic intrusions at Lanjiagou. Most of the molybdenum was emplaced during the principal hydrothermal (PH) stage (184.6 +/- 1.3 - 185.6 +/- 1.4 Ma), contemporaneously with intrusion of fine-grained porphyritic granite (188.9 +/- 1.2 Ma) into a granite batholith (193 +/- 3 Ma). The PH mineralization stage is mainly hosted by a quartz-dominated stockwork associated with phyllic alteration in the fine-grained porphyritic granite. This stage was followed by the late hydrothermal (LH) activity. Thick Mo-rich quartz veins were emplaced during the LH stage and cut the porphyry ore bodies. A ring breccia zone formed during the last hydrothermal stage and apparently cuts both the porphyry and the quartz vein ore bodies. The main hydrothermal vein stages have predominantly concentric and radial vein orientations centred on the ring breccia zone. Most of the concentric veins have shallow dips, whereas the radial veins are subvertical. The LH veins have predominantly NEE and NW orientations in the deposit and are moderately inclined. We surmise that the veining was controlled by the local stress regime generated by the intrusion of a large, deep pluton that we interpreted to be the source of the granites, the breccia zone, and the molybdenum mineralization. Resurgence within the magma chamber reactivated the steep concentric structures in a reverse sense, and accumulation of magmatic and/or fluid pressure resulted in explosive brecciation, producing the ring breccia zone. A predominantly late set of NW-trending, post-ore felsic dikes, associated with the regional structures, are a consequence of far-field stresses exceeding local stresses in the deposit. |
| WOS关键词 | MOLYBDENITE ; CHRONOMETER |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000304452700002 |
| 出版者 | TAYLOR & FRANCIS INC |
| 资助机构 | National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; National Crisis Mine of China(20089931) ; National Crisis Mine of China(20089931) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; National Crisis Mine of China(20089931) ; National Crisis Mine of China(20089931) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; National Crisis Mine of China(20089931) ; National Crisis Mine of China(20089931) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; National Crisis Mine of China(20089931) ; National Crisis Mine of China(20089931) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84364]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zeng, Qingdong |
| 作者单位 | Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Qingdong,Chu, Shaoxiong,Liu, Jianming,et al. Mineralization, alteration, structure, and Re-Os age of the Lanjiagou porphyry Mo deposit, North China Craton[J]. INTERNATIONAL GEOLOGY REVIEW,2012,54(10):1145-1160. |
| APA | Zeng, Qingdong,Chu, Shaoxiong,Liu, Jianming,Sun, Shouke,&Chen, Weijun.(2012).Mineralization, alteration, structure, and Re-Os age of the Lanjiagou porphyry Mo deposit, North China Craton.INTERNATIONAL GEOLOGY REVIEW,54(10),1145-1160. |
| MLA | Zeng, Qingdong,et al."Mineralization, alteration, structure, and Re-Os age of the Lanjiagou porphyry Mo deposit, North China Craton".INTERNATIONAL GEOLOGY REVIEW 54.10(2012):1145-1160. |
入库方式： OAI收割
来源：地质与地球物理研究所
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