Crustal control on the petrogenesis of adakite-like rocks

doi:10.1016/j.chemgeo.2023.121548

	Wu, Chao 1,2; Chiaradia, Massimo 3; Tang, Gongjian 2; Chen, Huayong1,2,4,5
	Crustal control on the petrogenesis of adakite-like rocks
Source Publication	CHEMICAL GEOLOGY
ISSN	0009-2541
	2023-08-20
Volume	632 Pages:11
DOI	10.1016/j.chemgeo.2023.121548
Language	英语
WOS Research Area	Geochemistry & Geophysics
Abstract	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.
Keyword	Adakite-like rock Fractional crystallization Partial melting Late-stage orogenesis
WOS ID	WOS:001011712700001
Indexed By	SCI
Citation statistics	Cited Times:4[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/74366
Collection	有机地球化学国家重点实验室
Corresponding Author	Chen, Huayong
Affiliation	1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Univ Geneva, Dept Earth Sci, Rue Maraichers 13, CH-1205 Geneva, Switzerland 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Guangzhou Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China
Recommended Citation 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.

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