兰州大学机构库
Petrogenesis and tectonic implications of the Silurian adakitic granitoids in the eastern segment of the Qilian Orogenic Belt, Northwest China
Zhao, Jiao-Long1; Huang, Xiao-Jun2; Hu, Pei-Qing1; Yang, Zhen-Xi3; Fan, Ying3; Wang, Er-Teng1; Yang, Fu-Bo1; Zhang, Jing-Yu1
2023-10-18
Online publication date2023-10
Source PublicationActa Geochimica   Impact Factor & Quartile
ISSN2096-0956 ; 2365-7499
EISSN2365-7499
page numbers15
AbstractGeodynamic mechanism responsible for the generation of Silurian granitoids and the tectonic evolution of the Qilian orogenic belt remains controversial. In this study, we report the results of zircon U-Pb age, and systematic whole-rock geochemical data for the Haoquangou and Liujiaxia granitoids within the North Qilian orogenic belt and the Qilian Block, respectively, to constrain their petrogenesis, and the Silurian tectonic evolution of the Qilian orogenic belt. Zircon U-Pb ages indicate that the Haoquangou and Liujiaxia intrusions were emplaced at 423 +/- 3 Ma and 432 +/- 4 Ma, respectively. The Haoquangou granodiorites are calc-alkaline, while the Liujiaxia granites belong to the high-K calc-alkaline series. Both are peraluminous in composition and have relatively depleted Nd isotopic [epsilon Nd(t) = (- 3.9 - + 0.6)] characteristics compared with regional basement rocks, implying their derivation from a juvenile lower crust. They show adakitic geochemical characteristics and were generated by partial melting of thickened lower continental crust. Post-collisional extensional regime related to lithospheric delamination was the most likely geodynamic mechanism for the generation of the Haoquangou granodiorite, while the Liujiaxia granites were generated in a compressive setting during continental collision between the Qaidam and Qilian blocks.
KeywordSilurian adakitic granitoids Petrogenesis Tectonic setting Qilian Orogenic Belt
PublisherSPRINGER INT PUBL AG
DOI10.1007/s11631-023-00644-4
Indexed ByESCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:001087402000001
Original Document TypeArticle ; Early Access
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/569443
Collection兰州大学
Corresponding AuthorZhao, Jiao-Long; Hu, Pei-Qing
Affiliation
1.Lanzhou Univ, Sch Earth Sci, Key Lab Mineral Resources Western China Gansu Prov, Lanzhou 730000, Peoples R China;
2.Tianjin North China Geol Survey Bur, Nucl Ind 247 Brigade, Tianjin 301800, Peoples R China;
3.Gansu Prov Bur Geol & Mineral Resources, Fourth Inst Geol & Mineral Explorat, Jiuquan 735000, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Jiao-Long,Huang, Xiao-Jun,Hu, Pei-Qing,et al. Petrogenesis and tectonic implications of the Silurian adakitic granitoids in the eastern segment of the Qilian Orogenic Belt, Northwest China[J]. Acta Geochimica,2023.
APA Zhao, Jiao-Long.,Huang, Xiao-Jun.,Hu, Pei-Qing.,Yang, Zhen-Xi.,Fan, Ying.,...&Zhang, Jing-Yu.(2023).Petrogenesis and tectonic implications of the Silurian adakitic granitoids in the eastern segment of the Qilian Orogenic Belt, Northwest China.Acta Geochimica.
MLA Zhao, Jiao-Long,et al."Petrogenesis and tectonic implications of the Silurian adakitic granitoids in the eastern segment of the Qilian Orogenic Belt, Northwest China".Acta Geochimica (2023).
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