OIB-like, heterogeneous mantle sources of Permian basaltic magmatism in the western Tarim Basin, NW China: Implications for a possible Permian large igneous province
文献类型：期刊论文
| 作者 | Zhou, Mei-Fu1,2; Zhao, Jun-Hong1,2; Jiang, Chang-Yi3; Gao, Jian-Feng1; Wang, Wei4; Yang, Sheng-Hong1 |
| 刊名 | LITHOS
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 113期号:3-4页码:583-594 |
| 关键词 | Permian basalt Geochemistry Heterogeneous mantle source Tarim Basin Large igneous province |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2009.06.027 |
| 文献子类 | Article |
| 英文摘要 | Permian basalts are widely distributed in the Tarim Basin and surrounding areas of NW China. The magmatism is represented by basaltic flows in Keping and mafic and ultramafic dykes in Silurian-Devonian strata in Bachu, southwestern Tarim Basin. The basalts in Keping have SiO(2) (44.1%-55.5 wt.%) and total alkalis (Na(2)O+K(2)O-3.20-7.79 wt.%) similar to the mafic dykes in Bachu, but with much higher TiO(2) (3.53-4.33 wt.%). An ultramafic dyke has relatively low SiO(2) (44.6-43.2 wt.%) and high MgO (19.0-20.2 wt.%), reflecting the abundance of cumulate olivine. All the rocks, including both lavas and dykes, have parallel, mantle-normalized trace element patterns enriched in Rb, Ba, Th, Nb, Ta, Zr, Hf, and light rare earth elements (LREE). The basalts have higher initial (87)Sr/(86)Sr ratios (0.7064 to 0.7080) and lower epsilon Nd(t) values (-2.66 to -9.27) than the dykes (initial (87)Sr/(86)Sr ratios range from 0.7048 to 0.7052 and epsilon Nd(t) values from + 1.64 to + 5.16). Both the basalts and dykes show a narrow range of (206)Pb/(204)Pb (17.87-18.77), (207)Pb/(204)Pb (15.52-15.58) and (208)Pb/(204)Pb (38.38-39.04) ratios. The dykes do not show significant crustal contamination and were derived from an OIB-like, asthenospheric mantle source. In contrast, the basaltic flows show variable degrees (up to 10%) of crustal contamination and were derived from an OIB-like, but isotopically more enriched, asthenospheric mantle source. Olivine from the ultramafic dyke has Fo values up to 85, corresponding to a melt temperature of 1300 degrees C and a melt Mg# of 63. The Tarim Basin magmatism reflects partial melting of heterogeneous mantle sources related to a major mantle plume. Spatially and temporally associated mafic-ultramafic and syenitic intrusions and volcanic rocks form the similar to 275 Ma Tarim large igneous province. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS关键词 | MAFIC-ULTRAMAFIC INTRUSIONS ; EMEISHAN FLOOD BASALTS ; ASIAN OROGENIC BELT ; SW CHINA ; TRACE-ELEMENT ; CONTINENTAL LITHOSPHERE ; ACCRETIONARY TECTONICS ; NORTHWESTERN CHINA ; TRIASSIC BOUNDARY ; SR-ISOTOPE |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000272787200016 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Research Grant Council of Hong Kong(HKU7058/08P) ; Research Grant Council of Hong Kong(HKU7058/08P) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; CVRD-INCO ; CVRD-INCO ; HKU ; HKU ; Research Grant Council of Hong Kong(HKU7058/08P) ; Research Grant Council of Hong Kong(HKU7058/08P) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; CVRD-INCO ; CVRD-INCO ; HKU ; HKU ; Research Grant Council of Hong Kong(HKU7058/08P) ; Research Grant Council of Hong Kong(HKU7058/08P) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; CVRD-INCO ; CVRD-INCO ; HKU ; HKU ; Research Grant Council of Hong Kong(HKU7058/08P) ; Research Grant Council of Hong Kong(HKU7058/08P) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS(200802) ; CVRD-INCO ; CVRD-INCO ; HKU ; HKU |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70274]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhou, Mei-Fu |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang, Peoples R China 3.Changan Univ, Sch Earth Resources, Xian, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Mei-Fu,Zhao, Jun-Hong,Jiang, Chang-Yi,et al. OIB-like, heterogeneous mantle sources of Permian basaltic magmatism in the western Tarim Basin, NW China: Implications for a possible Permian large igneous province[J]. LITHOS,2009,113(3-4):583-594. |
| APA | Zhou, Mei-Fu,Zhao, Jun-Hong,Jiang, Chang-Yi,Gao, Jian-Feng,Wang, Wei,&Yang, Sheng-Hong.(2009).OIB-like, heterogeneous mantle sources of Permian basaltic magmatism in the western Tarim Basin, NW China: Implications for a possible Permian large igneous province.LITHOS,113(3-4),583-594. |
| MLA | Zhou, Mei-Fu,et al."OIB-like, heterogeneous mantle sources of Permian basaltic magmatism in the western Tarim Basin, NW China: Implications for a possible Permian large igneous province".LITHOS 113.3-4(2009):583-594. |
入库方式： OAI收割
来源：地质与地球物理研究所
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