帮助 关于我们

返回检索结果

桂西巴马地区极高 Ti/Y 值基性岩地球化学特征——来自峨眉山地幔柱高Ti母岩浆?
Geochemistry of extreme high Ti/Y mafic rocks from western Guangxi: Implications for the primitive magma of high Ti basalt of Emeishan mantle plume?

查看参考文献55篇

黄文龙 1   刘希军 1 *   时毓 1   许继峰 2   廖帅 1   郭琳 1   吴伟男 1   李政林 1   梁琼丹 1  
文摘 桂西地区位于扬子地块西南缘,越北地块以北。桂西巴马等地出露层状—似层状基性岩(辉绿岩和玄武岩),该地区的基性岩成因对于理解该区构造—岩浆作用具有十分重要的意义。对桂西巴马基性岩进行了岩石学和地球化学研究,对其岩石成因和岩浆源区特征进行了讨论。研究表明,桂西巴马基性岩属于碱性玄武质岩,相对富集轻稀土元素和Nb、Ti等微量元素,与峨眉山大火成岩省高Ti玄武岩相似,说明其与峨眉山地幔柱具有相关性。然而,对比峨眉山高Ti玄武岩,巴马基性岩表现出更高的Ti/Y值。不相容元素比值特征表明,桂西巴马基性岩岩浆演化呈现更高的Nb/Y值等演化趋势。结合Dy/Dy~* 与Dy/Yb、Ti/Y的协变关系,对桂西基性岩与峨眉山玄武岩岩浆源区中稀土元素的分异特征进行判别,揭示出桂西巴马基性岩和峨眉山高Ti玄武岩具有同源性。然而,巴马基性岩地幔熔融程度更低,可能是峨眉山大火成岩省外带的地幔柱岩浆作用延伸的结果,代表了峨眉山地幔柱高Ti玄武岩母岩浆的特征。
其他语种文摘 Bama area in western Guangxi is located on the southwestern margin of the South China Block and the northern side of North Vietnam Block. Late Permian mafic rocks are well cropped out around Bama County. Deciphering the petrogenesis of Bama mafic rocks is crucial to the understanding of the tectonic-magmatic evolution of western Guangxi. This paper presents geochemical data (major and trace elements data) of Bama mafic rocks and discusses the petrogenesis and mantle sources of Bama mafic rocks. Studies indicate that the Bama mafic rocks mainly belong to alkaline basalt. These rocks are relatively enriched in LREE and Nb, Ti, and have similar trace element characteristics to the high Ti basalts from the Emeishan mantle plume, suggesting that they shared a common mantle source. However, the Bama mafic rocks show relatively higher Ti/Y ratios than the Emeishan high Ti basalts. The incompatible trace elements ratios covariance diagram that can trace the mantle source reveals that the Bama mafic rocks have an extremely high Nb/Y evolution trend. According to Dy/Dy~* versus Dy/Yb and Ti/Y covariance diagrams, the authors hold that the Bama high Ti/Y mafic rocks experienced a lower degree mantle partial melting than the Emeishan high Ti basalts, although they likely shared the same mantle plume source. Thus, the Bama mafic rocks are magmatic products in the outer zone of the Emeishan Large Igneous Province and probably represent the primitive magmas of Emeishan high Ti basalts.
来源 地质通报 ,2015,34(2-3):474-486 【核心库】
关键词 桂西巴马 ; 高Ti/Y值基性岩 ; 峨眉山地幔柱 ; 地球化学
地址

1. 桂林理工大学地球科学学院, 广西隐伏金属矿产勘查重点实验室, 广西, 桂林, 541004  

2. 桂林理工大学地球科学学院, 广西隐伏金属矿产勘查重点实验室;;同位素地球化学国家重点实验室, 广西, 桂林, 541004

语种 中文
文献类型 研究性论文
ISSN 1671-2552
学科 地质学
基金 国家自然科学基金项目 ;  广西自然科学基金 ;  桂林理工大学博士启动基金 ;  广西八桂学者项目(2013) ;  广西隐伏金属矿产勘查重点实验室系统性研究课题
文献收藏号 CSCD:5392146

参考文献 共 55 共3页

1.  Xu Y. Petrologic and geochemical constraints on the petrogenesis of Permian-Triassic Emeishan flood basalts in southwestern China. Lithos,2001,58(3):145-168 被引 57    
2.  Xiao L. Distinct mantle sources of low-Ti and high-Ti basalts from the western Emeishan large igneous province, SW China: implications for plume-lithosphere interaction. Earth and Planetary Science Letters,2004,228(3/4):525-546 被引 157    
3.  He B. Sedimentary evidence for a rapid, kilometer-scale crustal doming prior to the eruption of the Emeishan flood basalts. Earth and Planetary Science Letters,2003,213(3):391-405 被引 191    
4.  Xu Y G. Testing plume hypothesis in the Emeishan large igneous province. Episodes,2007,30:32-42 被引 29    
5.  Wang C Y. Permian flood basalts and mafic intrusions in the Jinping (SW China)-Song Da (northern Vietnam) district: Mantle sources, crustal contamination and sulfide segregation. Chemical Geology,2007,243(3/4):317-343 被引 49    
6.  吴浩若. 晚古生代-三叠纪南盘江海的构造古地理问题. 古地理学报,2003,5(1):63-76 被引 71    
7.  范蔚茗. 桂西晚古生代玄武岩Ar-Ar和U-Pb年代学及其对峨眉山玄武岩省喷发时代的约束. 科学通报,2004,49(18):1892-1900 被引 59    
8.  Zhou M. Zircon U-Pb geochronology and elemental and Sr - Nd isotope geochemistry of Permian mafic rocks in the Funing area, SW China. Contributions to Mineralogy and Petrology,2006,151(1):1-19 被引 4    
9.  Fan W. Geochronology and geochemistry of Permian basalts in western Guangxi Province, Southwest China: Evidence for plume-lithosphere interaction. Lithos,2008,102(2008):218-236 被引 10    
10.  Cai J. A new model for the Indochina and South China collision during the Late Permian to the Middle Triassic. Tectonophysics,2009,467(1/4):35-43 被引 3    
11.  Lai S. Permian high Ti/Y basalts from the eastern part of the Emeishan Large Igneous Province, southwestern China: Petrogenesis and tectonic implications. Journal of Asian Earth Sciences,2012,47:216-230 被引 8    
12.  张晓静. 桂西北玉凤、巴马晚二叠世辉绿岩年代学、地球化学特征及成因研究. 矿物岩石地球化学通报,2014,33(2):163-176 被引 18    
13.  Mcnutt M K. Superswells. Reviews of Geophysics,1998,36(2):211-244 被引 6    
14.  Zhao D. Seismic structure and origin of hotspots and mantle plumes. Earth and Planetary Science Letters,2001,192(3):251-265 被引 19    
15.  Garnero E J. Implications of lower-mantle structural heterogeneity for the existence and nature of wholemantle plumes. Geological Society of America Special Papers,2007,430:79-101 被引 2    
16.  Irvine T N. A global convection framework; concepts of symmetry, stratification, and system in the Earth's dynamic structure. Economic Geology,1989,84(8):2059-2114 被引 3    
17.  广西壮族自治区地质矿产局. 广西壮族自治区区域地质志,1985:1-853 被引 96    
18.  云南省质矿产局. 云南省区域地质志,1990:1-728 被引 1    
19.  王忠诚. 桂西晚古生代海相玄武岩的特征及其形成环境. 岩石学报,1997,13(2):260-265 被引 38    
20.  吴浩若. 桂西晚古生代基性岩的再认识及其大地构造意义. 地质科学,1993,28(3):288-289 被引 24    
引证文献 6

1 江文 滇东南富宁地区基性侵入岩与峨眉山地幔柱存在成因关系吗?—来自1: 5万洞波幅和皈朝幅地质填图的证据 岩石学报,2017,33(10):3109-3122
被引 9

2 陈丽菲 桂西阳圩地区基性岩地球化学特征及区域构造背景分析 黄金科学技术,2017,25(5):30-38
被引 0 次

显示所有6篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号