Geochronology and geochemistry of the gejiu complex in the yunnan province, sw china: petrogenesis and contributions of mantle-derived melts to tin mineralization
文献类型：期刊论文
| 作者 | Huang WenLong1,2; Xu JiFeng1,3; Chen JianLin1,3; Huang Feng1; Zeng YunChuan1,2; Pi QiaoHui4; Cai YongFeng4; Jiang XingZhou4 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 32期号:8页码:2330-2346 |
| 关键词 | Mafic rock Alkaline rock Geochronology Geochemistry Mantle magma Tin mineralization Gejiu complex |
| ISSN号 | 1000-0569 |
| 通讯作者 | Huang wenlong(wenlonghuang999@gmail.com) |
| 英文摘要 | Tin mineralization is generally spatially associated with felsic magmatic rocks. however, the heat source for the formation of tin mineralization is still on debate, which may be derived from the mantle material. the gejiu complex, located in the yunnan tin ore belt, is mainly composed of granites, mafic and alkaline rocks. these rocks provide significant information on generation of tin mineralization and magmatic processes. in this paper, we report new zircon u-pb ages, whole-rock major and trace elements and zircon hf isotope data from the gejiu complex. the results suggest that the granites (81.43 +/- 0.46ma and 82.89 +/- 0.58ma), gabbrodiorites (81. 35 +/- 0.22ma) and alkaline rocks (80.35 +/- 0.72ma) emplaced contemporaneously at late cretaceous. although the emplacement time of the three groups of rocks are nearly synchronous, the distinct zircon hf isotopes (+0.8 similar to -4.2 for gabbrodiorites, -1.9 similar to -7.5 for alkaline rocks and + 0.4 similar to -8.4 for granites, respectively) indicate they were derived from different source regions. the gejiu granites are weakly prealuminous and display negative correlation between sio2 and p2o5 contents, arguing against s-type granite. in addition, their negative anomalies in zr, nb, sr and eu were resulted from zircon, apatite and feldspar fractionation. the gejiu granites show low feot/mgo ratios and low zircon saturation temperatures, suggesting they are high fractionated i-type granite rather than a-type granite. the gejiu complex was the production of the magmas from the mantle and crustal materials contemporary. accordingly, partial melting of the continental crust induced by injection of hot mantle materials which also play an important role in tin mineralization for energy, probably metallogenic material. |
| WOS关键词 | I-TYPE GRANITES ; POLYMETALLIC ORE DISTRICT ; HF ISOTOPIC COMPOSITIONS ; A-TYPE GRANITES ; SOUTH CHINA ; LOW-TEMPERATURE ; GEOLOGICAL SIGNIFICANCE ; TECTONIC IMPLICATIONS ; ZIRCON SATURATION ; EAST GREENLAND |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000383309100007 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375981 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Huang WenLong |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Guilin Univ Technol, Sch Earth Sci, Guilin 541004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang WenLong,Xu JiFeng,Chen JianLin,et al. Geochronology and geochemistry of the gejiu complex in the yunnan province, sw china: petrogenesis and contributions of mantle-derived melts to tin mineralization[J]. Acta petrologica sinica,2016,32(8):2330-2346. |
| APA | Huang WenLong.,Xu JiFeng.,Chen JianLin.,Huang Feng.,Zeng YunChuan.,...&Jiang XingZhou.(2016).Geochronology and geochemistry of the gejiu complex in the yunnan province, sw china: petrogenesis and contributions of mantle-derived melts to tin mineralization.Acta petrologica sinica,32(8),2330-2346. |
| MLA | Huang WenLong,et al."Geochronology and geochemistry of the gejiu complex in the yunnan province, sw china: petrogenesis and contributions of mantle-derived melts to tin mineralization".Acta petrologica sinica 32.8(2016):2330-2346. |
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来源：中国科学院大学
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