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Zircon Trace Element Constraints on the Evolution of the Paleoproterozoic Birimian Granitoids of the West African Craton (Ghana)

文献类型：期刊论文

作者Sakyi, Patrick Asamoah1; Su, Benxun2; Kwayisi, Daniel1; Chen, Chen2,3; Bai, Yang2,3; Alemayehu, Melesse2,4
刊名JOURNAL OF EARTH SCIENCE
出版日期2018-02-01
卷号29期号:1页码:43-56
关键词West African Craton granitoids zircon trace elements magmatic evolution hydrothermal alteration
ISSN号1674-487X
DOI10.1007/s12583-017-0799-4
文献子类Article
英文摘要The Paleoproterozoic Birimian granitoids of the West African Craton (WAC) in the northwestern part of Ghana, have been studied for their zircon trace elements concentrations to infer the source characteristics, origin, and magmatic evolution. The zircons in the granitoids have Th/U ratios ranging from 0.03 to 1.55, and display depleted light rare earth elements (LREE) and enriched heavy rare earth elements (HREE) contents, characterized by pronounced positive to negative anomalies of Eu (Eu/Eu*=0.14-0.98 and 1.01-6.06, respectively) and Ce (Ce/Ce*=0.08-0.98 and 1.02-116, respectively), which may imply that they were derived from both magmatic and hydrothermal sources. The geochemical plots of U/Yb vs. Y and Hf, the positive correlation between Hf and the other high field strength elements (HFSE) and high rare earth elements (REE) contents, with enrichment in Ce and depletion in Eu, indicate that the granitoids possibly formed from partial melting of the crust. The trace elements characteristics (i.e., wide range of Hf, Ce/Ce*, Th/U and Zr/Hf values) of the zircons suggest that crystallization of the magma occurred under variable oxidation states, which spanned over a longer period, implying that our data corroborate interpretations from studies of whole-rock geochemistry and geochronology on the granitoids of northwestern Ghana. This further indicates that the evolution of the Birimian granitoids in this part of the WAC occurred earlier than what had been reported in the literature.
WOS关键词U-PB AGES ; HF ISOTOPE GEOCHEMISTRY ; RARE-EARTH-ELEMENTS ; LA-ICP-MS ; CHINA IMPLICATIONS ; CRUSTAL EVOLUTION ; GREENSTONE-BELT ; VOLCANIC BELT ; BURKINA-FASO ; 2.1 GA
WOS研究方向Geology
语种英语
WOS记录号WOS:000425164300004
出版者CHINA UNIV GEOSCIENCES, BEIJING
资助机构National Natural Science Foundation of China(41522203) ; National Natural Science Foundation of China(41522203) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; National Natural Science Foundation of China(41522203) ; National Natural Science Foundation of China(41522203) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; National Natural Science Foundation of China(41522203) ; National Natural Science Foundation of China(41522203) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; National Natural Science Foundation of China(41522203) ; National Natural Science Foundation of China(41522203) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82774]  
专题中国科学院地质与地球物理研究所
通讯作者Sakyi, Patrick Asamoah
作者单位1.Univ Ghana, Sch Phys & Math Sci, Dept Earth Sci, Legon, Ghana
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Sch Earth Sci, Beijing 100049, Peoples R China
4.Adama Sci & Technol Univ, Sch Appl Nat Sci, Dept Appl Geol, Adama, Ethiopia
推荐引用方式
GB/T 7714		 Sakyi, Patrick Asamoah,Su, Benxun,Kwayisi, Daniel,et al. Zircon Trace Element Constraints on the Evolution of the Paleoproterozoic Birimian Granitoids of the West African Craton (Ghana)[J]. JOURNAL OF EARTH SCIENCE,2018,29(1):43-56.
APA Sakyi, Patrick Asamoah,Su, Benxun,Kwayisi, Daniel,Chen, Chen,Bai, Yang,&Alemayehu, Melesse.(2018).Zircon Trace Element Constraints on the Evolution of the Paleoproterozoic Birimian Granitoids of the West African Craton (Ghana).JOURNAL OF EARTH SCIENCE,29(1),43-56.
MLA Sakyi, Patrick Asamoah,et al."Zircon Trace Element Constraints on the Evolution of the Paleoproterozoic Birimian Granitoids of the West African Craton (Ghana)".JOURNAL OF EARTH SCIENCE 29.1(2018):43-56.

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