Crustal control on the petrogenesis of adakite-like rocks
文献类型：期刊论文
| 作者 | Wu, Chao2,4; Chiaradia, Massimo5; Tang, Gongjian2; Chen, Huayong1,2,3,4
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| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2023-08-20 |
| 卷号 | 632页码:11 |
| 关键词 | Adakite-like rock Fractional crystallization Partial melting Late-stage orogenesis |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2023.121548 |
| 英文摘要 | Adakite-like rocks have attracted extensive interest as they record magmatic processes and mantle-crustal ma-terial recycling, and because they are associated with major porphyry Cu deposits. However, their petrogenesis is still under debate. In this study, we compiled ca. 7000 sets of whole-rock geochemical and Nd isotopic data of Phanerozoic adakite-like rocks worldwide from published literature, with the aim to characterize geochemically adakite-like rocks from subduction, collision, and post-collision settings. Statistical analysis highlights the different lanthanides + Y patterns from various types of juvenile and mature crust. Modelling of the statistically-processed data suggest that pure fractionation of amphibole and/or garnet cannot account for the lanthanides + Y patterns of adakite-like rocks, whereas partial melting of mafic protoliths is a possible mechanism. This study supports a adakite-like magma generation model by partial melting of the eclogitic lower crust. The melt was then mixed with depleted mantle-derived basaltic melt, and subsequently fractionated. Compared with the adakite-like magma formation from the juvenile crust, that from the mature crust is featured by higher degree of partial melting, greater depths and higher water content. Additionally, secular peaks of La/Yb value (which reflects the depth of magma source) of adakite-like rocks worldwide suggest that the period of magmatic activity in deep-level magma reservoirs could be used as the indicator of either the final stages of the Phanerozoic orogenesis, or craton activation by subduction. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001011712700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74365]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Chen, Huayong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Guangzhou Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 5.Univ Geneva, Dept Earth Sci, Rue Maraichers 13, CH-1205 Geneva, Switzerland |
| 推荐引用方式 GB/T 7714 | Wu, Chao,Chiaradia, Massimo,Tang, Gongjian,et al. Crustal control on the petrogenesis of adakite-like rocks[J]. CHEMICAL GEOLOGY,2023,632:11. |
| APA | Wu, Chao,Chiaradia, Massimo,Tang, Gongjian,&Chen, Huayong.(2023).Crustal control on the petrogenesis of adakite-like rocks.CHEMICAL GEOLOGY,632,11. |
| MLA | Wu, Chao,et al."Crustal control on the petrogenesis of adakite-like rocks".CHEMICAL GEOLOGY 632(2023):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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