Geochemical characteristics of karamaili ophiolite in east junggar, xingjiang : products of ridge subduction
文献类型：期刊论文
| 作者 | Liu, X. J.; Xu, J. F.; Hou, Q. Y.; Bai, Z. H.; Lei, M. |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 23期号:7页码:1591-1602 |
| 关键词 | Junggar Karamaili Ophiolite Ridge subduction Arc island |
| ISSN号 | 1000-0569 |
| 通讯作者 | Xu, j. f.(jifengxu@gig.ac.cn) |
| 英文摘要 | The mafic rocks of karamaili ophiolite in east junggar of xinjiang province show both compositional characteristics of a mid-ocean ridge basalt(morb) and an island-arc basalt (iab). they display flat to light rare earth element (ree)-depleted and slight enriched patterns. the spider diagrams for trace elements indicate that they are variable depleted in high filed-strength elements (hfse), but enriched in large ion lithophile elements(lile). the composition characters of these mafic rocks are much similar to those of the chile ridge and cocos ridge basalts, which are typically affected by ridge subduction. discrimination diagrams demonstrate that mafic rocks of the karamaili ophiolite plot within the are and morb filed, and show a transitional composition from iab to morb, therefore the ophiolite was possibly formed in a subducted ridge-affected island arc or forearc setting. relatively high epsilon(nd)( t) values (7.2 similar to 9.8) and low nb/zr,ta/yb ratios suggest that at least three components were involved in their source: sub-arc depleted mantle; fluids dehydrated from the subducted slab and marine sediment and morb mantle. |
| WOS关键词 | SLAB-WINDOW FORMATION ; VOLCANIC-ROCKS ; TRACE-ELEMENT ; SOUTHERN ALASKA ; MIDOCEAN RIDGE ; FORE-ARC ; PALEOZOIC ACCRETIONARY ; ZAMBALES OPHIOLITE ; CONTINENTAL GROWTH ; NORTHERN XINJIANG |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000249590500004 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2383031 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Xu, J. F. |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, X. J.,Xu, J. F.,Hou, Q. Y.,et al. Geochemical characteristics of karamaili ophiolite in east junggar, xingjiang : products of ridge subduction[J]. Acta petrologica sinica,2007,23(7):1591-1602. |
| APA | Liu, X. J.,Xu, J. F.,Hou, Q. Y.,Bai, Z. H.,&Lei, M..(2007).Geochemical characteristics of karamaili ophiolite in east junggar, xingjiang : products of ridge subduction.Acta petrologica sinica,23(7),1591-1602. |
| MLA | Liu, X. J.,et al."Geochemical characteristics of karamaili ophiolite in east junggar, xingjiang : products of ridge subduction".Acta petrologica sinica 23.7(2007):1591-1602. |
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来源：中国科学院大学
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