Petrogenesis of the Huili Paleoproterozoic leucogranite in the Jiaobei Terrane of the North China Craton: A highly fractionated albite granite forced by K-feldspar fractionation
文献类型：期刊论文
| 作者 | Li, Youlian1; Zhang, Huafeng2; Guo, Jinghui1,3; Li, Chaofeng1 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2017-02-05 |
| 卷号 | 450页码:165-182 |
| 关键词 | Leucogranite Highly Fractionated Granite Albite Granite K-feldspar Fractionation Pb-pb Isochrons North China Craton |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2016.12.029 |
| 文献子类 | Article |
| 英文摘要 | A Paleoproterozoic leucogranite has been identified petrologically as highly fractionated granite near Huili in the Jiaobei Terrane of the North China Craton. This granite occurs as a 3 x 10 km pluton in the metamorphic Paleoproterozoic Jingshan Group and was dated at 1.86 Ga using zircon LA-ICP-MS U--Pb ages. The Huili leucogranite can be subdivided into three groups: groups I and II have normal leucogranite abundances with 2.22-2.57 wt.%Na20, 6.10-6.92 wt.%K20, and 71.68-73.07 wt.% Si02 and group III has a remarkably high Na(2)0 concentration of 6.45-7.23 wt.%, a low K(2)0 content of 0.82-1.05 wt.%, and 7421-74.79% wt.% Si02. Moreover, group III leucogranite comprises slightly lower Th,U, and Srcontents and considerably lower K-feldspar compatible elements, such as Rb,Ba,Pb,and Cs than those of groups I & Iota Iota All of these features strongly indicate the K-feldspar fractionation during the magma evolution from groups I and II to group III, which is strongly supported by the Pb isotope analysis. Group III leucogranite has a notably high U/Pb ratio of 030 to 0.45 with a normal U content of 1.42 to 221 ppm and very low Pb content of 4 to 5 ppm, indicating a significant K-feldspar fractionation of the magma. Group III leucogranite has high radiogenic Pb isotopes (206)pb/(204)pb = 37.407-11631), demonstrating that the rocks must have existed in a high U-Pb system for a notably long time. Fortunately, the whole rock Pb isotope values roughly define the Pb--Pb isochrons, not only when all three groups of samples are considered together but also when any individual group is considered. The ages are very close to the formation time of-1.86 Ga indicating the high U/Pb system required by these Pb isotopes must have been initiated during the formation of the Huili leucogranite, which has perfectly confirmed the K-feldspar fractionation during the magma evolution. |
| WOS关键词 | LIAO-JI BELT ; A-TYPE GRANITES ; IONIZATION MASS-SPECTROMETRY ; HARNEY PEAK LEUKOGRANITE ; KERALA KHONDALITE BELT ; KHETRI COPPER BELT ; LACHLAN FOLD BELT ; PB ZIRCON AGES ; U-TH-PB ; CRUSTAL EVOLUTION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000394473600012 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Major State Research -Development Project(2016YFC0600109) ; Major State Research -Development Project(2016YFC0600109) ; NSFC(41230311 ; NSFC(41230311 ; 41530208) ; 41530208) ; Major State Research -Development Project(2016YFC0600109) ; Major State Research -Development Project(2016YFC0600109) ; NSFC(41230311 ; NSFC(41230311 ; 41530208) ; 41530208) ; Major State Research -Development Project(2016YFC0600109) ; Major State Research -Development Project(2016YFC0600109) ; NSFC(41230311 ; NSFC(41230311 ; 41530208) ; 41530208) ; Major State Research -Development Project(2016YFC0600109) ; Major State Research -Development Project(2016YFC0600109) ; NSFC(41230311 ; NSFC(41230311 ; 41530208) ; 41530208) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53034]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Guo, Jinghui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.China Univ Geosci, Dept Geosci & Resources, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Youlian,Zhang, Huafeng,Guo, Jinghui,et al. Petrogenesis of the Huili Paleoproterozoic leucogranite in the Jiaobei Terrane of the North China Craton: A highly fractionated albite granite forced by K-feldspar fractionation[J]. CHEMICAL GEOLOGY,2017,450:165-182. |
| APA | Li, Youlian,Zhang, Huafeng,Guo, Jinghui,&Li, Chaofeng.(2017).Petrogenesis of the Huili Paleoproterozoic leucogranite in the Jiaobei Terrane of the North China Craton: A highly fractionated albite granite forced by K-feldspar fractionation.CHEMICAL GEOLOGY,450,165-182. |
| MLA | Li, Youlian,et al."Petrogenesis of the Huili Paleoproterozoic leucogranite in the Jiaobei Terrane of the North China Craton: A highly fractionated albite granite forced by K-feldspar fractionation".CHEMICAL GEOLOGY 450(2017):165-182. |
入库方式： OAI收割
来源：地质与地球物理研究所
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