Protoliths reconstruction of amphibolites from kuerti ophiolites in north xinjiang and its petrogenesis
文献类型：期刊论文
| 作者 | Ma Lin1,2; Zhang HaiXiang1; Zhang BoYou1; Niu HeCai1 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 24期号:4页码:673-680 |
| 关键词 | North xinjiang Kuerti ophiolites Protolith reconstruction Petrogenesis Backarc basin |
| ISSN号 | 1000-0569 |
| 通讯作者 | Ma lin(marlin0814@163.com) |
| 英文摘要 | Amphibolites form the southern slab of kuerti ophiolite alternate with plagiogranites as dikes. they are characterized by lile enrichment, hfse depletion and flat to depleted lree pattern that display the features both of morb and island arc basalt. the study of the protoliths of these amphibolites indicates that their protoliths are sub-alkalic tholeiites, which represents the lower intrusive rock section of ophiolites. generally positive correlations of the elemental ratios ( e. g., th/nb, la/yb and th/yb), depleted lree and highs epsilon(nd) (t) values show the source of amphibolites might be the depleted morb mantle with some arc component. therefore, we propose a two-stage evolution model to interpret the compositional characteristics of the kuerti amphibolites. first, during early devonian, are basaltic melts were extracted from the hydrated are mantle wedge beneath kuerti by the northward subduction of the paleo-asian oceanic crust, leaving behind a depleted mantle source. then, low degree partial melting of the depleted mantle source occurred and sub-alkalic tholeiites, which are the protoliths of kuerti amphibolites, generated during seafloor spreading in the kuerti backarc basin in middle late devonian. |
| WOS关键词 | BACK-ARC BASIN ; MARIANA TROUGH BASALTS ; SUBDUCTION COMPONENTS ; IGNEOUS ROCKS ; EVOLUTION ; PETROLOGY ; MANTLE ; SR ; GEOCHEMISTRY ; GENERATION |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000256696700006 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2392405 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ma Lin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma Lin,Zhang HaiXiang,Zhang BoYou,et al. Protoliths reconstruction of amphibolites from kuerti ophiolites in north xinjiang and its petrogenesis[J]. Acta petrologica sinica,2008,24(4):673-680. |
| APA | Ma Lin,Zhang HaiXiang,Zhang BoYou,&Niu HeCai.(2008).Protoliths reconstruction of amphibolites from kuerti ophiolites in north xinjiang and its petrogenesis.Acta petrologica sinica,24(4),673-680. |
| MLA | Ma Lin,et al."Protoliths reconstruction of amphibolites from kuerti ophiolites in north xinjiang and its petrogenesis".Acta petrologica sinica 24.4(2008):673-680. |
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来源：中国科学院大学
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