Magma source and tectonic setting of the granitoids associated with saishitang cu deposit in the west qinling terrane
文献类型：期刊论文
| 作者 | Fu ChangLei1; Yan Zhen1; Guo XianQing2; Niu ManLan3; Chen Lei2; Xia WenJing4 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 32期号:7页码:1997-2014 |
| ISSN号 | 1000-0569 |
| 关键词 | Granitoids Magma source Tectontic setting Saishitang cu deposit West qinling terrane |
| 通讯作者 | Fu changlei(fuc1815@126.com) |
| 英文摘要 | The granitoids in saishitang cu deposit of the west qiling terrane consist of diorite porphyrite, quartz diorite, quartz diorite porphyrite, granite porphyry and quartz porphyry. their magma sources and tectonic setting can provide vital constrains on the evolution of the paleotethyan ocean and regional metallogenesis. geochemical analyses indicate that these granitoids belong to metaluminous calc-alkaline to high-k talc-alkaline rock series with similar geochemical charcacteristics of i-type granite. they have variable mg-# values of 39 similar to 68, high (la/yb)(n) ratios of 8.50 similar to 22.9 with lree enrichment, hree depletion and negative eu anomalies (delta eu = 0.28 similar to 0.78). they are enriched in lile (cs, rb, k and pb), depleted in hfse (nb, ta and ti), showing typical features of subduction-related arc granitoids. zircon shrimp u-pb dating of quartz diorite porphyrite and quartz porphyry yields concordant ages of 219.0 +/- 2.3ma and 220.0 +/- 2.0ma, repectively. their epsilon h-f(t) values of magmatic zircons are -4.5 similar to -2.1 and -2.5 similar to +1.0, with conresponding t(dm2), ages of 1392 similar to 1544ma and 1190 similar to 1415ma, respectively. in combination with previous results on triassic granitoids in the west qinling terrane and a' nymaqen ophiolitic melange, we suggest that the coeval granitoids in the saishitang cu deposit and west qinling terrane should be formed in continental margin arc environment by northward subduction of the paleotethyan ocean. they should mainly originate from the partial melting of mesoproterozoic lower-crustal metabasic rocks and were contaminated by mantle-derived magmas. |
| WOS关键词 | DETRITAL ZIRCON PROVENANCE ; HF ISOTOPIC COMPOSITIONS ; SONGPAN-GANZI COMPLEX ; SOUTH CHINA BLOCKS ; U-PB GEOCHRONOLOGY ; LACHLAN FOLD BELT ; S-TYPE GRANITES ; QINGHAI PROVINCE ; EAST KUNLUN ; GEOLOGICAL CHARACTERISTICS |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000381327100005 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375266 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fu ChangLei |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 3.Hefei Univ Technol, Dept Resources & Environm, Hefei 230009, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu ChangLei,Yan Zhen,Guo XianQing,et al. Magma source and tectonic setting of the granitoids associated with saishitang cu deposit in the west qinling terrane[J]. Acta petrologica sinica,2016,32(7):1997-2014. |
| APA | Fu ChangLei,Yan Zhen,Guo XianQing,Niu ManLan,Chen Lei,&Xia WenJing.(2016).Magma source and tectonic setting of the granitoids associated with saishitang cu deposit in the west qinling terrane.Acta petrologica sinica,32(7),1997-2014. |
| MLA | Fu ChangLei,et al."Magma source and tectonic setting of the granitoids associated with saishitang cu deposit in the west qinling terrane".Acta petrologica sinica 32.7(2016):1997-2014. |
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来源：中国科学院大学
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