Trace element and isotopic composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of associated silicate rocks
文献类型：期刊论文
| 作者 | Mitchell, Roger1; Chudy, Thomas2; McFarlane, Christopher R. M.3; Wu, Fu-Yuan4 |
| 刊名 | LITHOS
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 286页码:75-91 |
| 关键词 | Carbonatites Apatite Trace elements Sr-Nd isotopic composition Depleted mantle Blue River Canadian Cordillera |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2017.06.008 |
| 文献子类 | Article |
| 英文摘要 | Apatites from the Verity, Fir, Gum, Howard Creek and Felix carbonatites of the Blue River (British Columbia, Canada) area have been investigated with respect to their paragenesis, cathodoluminescence, trace element and Sr-Nd isotopic composition. Although all of the Blue River carbonatites were emplaced as sills prior to amphibolite grade metamorphism and have undergone deformation, in many instances magmatic textures and mineralogy are retained. Attempts to constrain the U-Pb age of the carbonatites by SIMS, TIMS and LA-ICP-MS studies of zircon and titanite were inconclusive as all samples investigated have experienced significant Pb loss during metamorphism. The carbonatites are associated with undersaturated calcite-titanite amphibole nepheline syenite only at Howard Creek although most contain clasts of disaggregated phoscorite-like rocks. Apatite from each intrusion is characterized by distinct but wide ranges, in trace element composition. The Sr and Nd isotopic compositions define an array on a Sr-87/Sr-86 vs(Nd)(2) diagram at 350 Ma indicating derivation from depleted sub-lithospheric mantle. This array could reflect mixing of Sr and Nd derived from HIMU and EM1 mantle sources, and implies that depleted mantle underlies the Canadian Cordillera. Although individual occurrences of carbonatites in the Blue River region are mineralogically and geochemically similar they are not identical and thus cannot be considered as rocks formed from a single batch of parental magma at the same stage of magmatic evolution. However, a common origin is highly probable. The variations in the trace element content and isotopic composition of apatite from each occurrence suggest that each carbonatite represents a combination of derivation of the parental magma(s) from mineralogically and isotopically heterogeneous depleted mantle sources coupled with different stages of limited differentiation and mixing of these magmas. We do not consider these carbonatites as primary direct partial melts of the sub-lithospheric mantle which have ascended from the asthenosphere without modification of their composition. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | TH-PB GEOCHRONOLOGY ; META-ALKALINE ROCKS ; 0.1 GPA PRESSURE ; MONASHEE MOUNTAINS ; CRUSTAL EVOLUTION ; SCRIP-NAPPE ; NIOBIUM ; COMPLEX ; GEOCHEMISTRY ; CONSTRAINTS |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000408286700005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Natural Sciences and Engineering Research Council of Canada (NSERC) ; Lakehead University ; Almaz Petrology ; NSERC Engineering Research - Industrial Post-graduate Scholarship II ; Commerce Resources Corp. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Lakehead University ; Almaz Petrology ; NSERC Engineering Research - Industrial Post-graduate Scholarship II ; Commerce Resources Corp. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Lakehead University ; Almaz Petrology ; NSERC Engineering Research - Industrial Post-graduate Scholarship II ; Commerce Resources Corp. ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Lakehead University ; Almaz Petrology ; NSERC Engineering Research - Industrial Post-graduate Scholarship II ; Commerce Resources Corp. |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/61870]  |
| 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 | Mitchell, Roger |
| 作者单位 | 1.Lakehead Univ, Dept Geol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada 2.Univ British Columbia, Dept Earth & Ocean Sci, Earth Sci Bldg, Vancouver, BC V67 1Z4, Canada 3.Univ New Brunswick, Dept Earth Sci, 2 Bailey Dr, Fredericton, NB E3B 5A3, Canada 4.Chinese Acad Sci, Inst Geol & Geophys, Beituchengxilu 19, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mitchell, Roger,Chudy, Thomas,McFarlane, Christopher R. M.,et al. Trace element and isotopic composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of associated silicate rocks[J]. LITHOS,2017,286:75-91. |
| APA | Mitchell, Roger,Chudy, Thomas,McFarlane, Christopher R. M.,&Wu, Fu-Yuan.(2017).Trace element and isotopic composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of associated silicate rocks.LITHOS,286,75-91. |
| MLA | Mitchell, Roger,et al."Trace element and isotopic composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of associated silicate rocks".LITHOS 286(2017):75-91. |
入库方式： OAI收割
来源：地质与地球物理研究所
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