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New Insight From the First Application of Ti-in-Quartz (TitaniQ) Thermometry Mapping in the Eastern Khondalite Belt, North China Craton

文献类型：期刊论文

作者Zheng, Yuanyuan1,2,3; Qi, Yang1,2,3; Zhang, Di1,2; Jiao, Shujuan1,2; Huang, Guangyu1,2; Guo, Jinghui1,2
刊名FRONTIERS IN EARTH SCIENCE
出版日期2022-03-29
卷号10页码:15
关键词Ti-in-quartz (TitaniQ) thermometer aluminous gneiss granulite UHT metamorphism thermal regime the khondalite belt North China Craton
DOI10.3389/feart.2022.860057
英文摘要The thermal regime of the lower crust is a critical factor that controls crustal anatexis, high-grade metamorphism, and granite formation, which finally results in crustal differentiation. However, the large-scale thermal regime in the Precambrian continental crust is generally not well established. In this study, we first applied Ti-in-quartz (TitaniQ) thermometer to map the temperature variation in the lower crust within an area of similar to 10,000 km(2) in the Paleoproterozoic eastern Khondalite Belt, North China Craton. The studied rocks are aluminous gneisses/granulites, which contain abundant quartz that generally coexists with rutile. The results show that matrix-type quartz with substantial rutile exsolution generally contains the maximum Ti concentration, which is <300 ppm higher than that of inclusion-type quartz. This result suggests that two quartz types probably formed at the prograde and near-peak to early cooling metamorphic stages, respectively. Therefore, the temperature mapping result based on the maximum Ti concentrations of the matrix-type quartz can better represent the thermal regime than inclusion-type quartz. Our regime shows that the hottest Paleoproterozoic lower crust is underneath the Liangcheng-Heling'er-Zhuozi area, where ultrahigh-temperature (UHT) metamorphism is closely associated with abundant charnockite. The hottest region may represent the root of an ancient large hot orogeny. Our study provides a new insight into the formation of UHT metamorphism.
WOS关键词ULTRAHIGH-TEMPERATURE METAMORPHISM ; HELANSHAN COMPLEX ; PHASE-EQUILIBRIA ; WESTERN BLOCK ; U-PB ; COLUMBIA SUPERCONTINENT ; PELITIC GRANULITES ; JINING COMPLEX ; EVOLUTION ; BEARING
WOS研究方向Geology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000783718100001
源URL[http://ir.iggcas.ac.cn/handle/132A11/105107]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Jiao, Shujuan
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Yuanyuan,Qi, Yang,Zhang, Di,et al. New Insight From the First Application of Ti-in-Quartz (TitaniQ) Thermometry Mapping in the Eastern Khondalite Belt, North China Craton[J]. FRONTIERS IN EARTH SCIENCE,2022,10:15.
APA Zheng, Yuanyuan,Qi, Yang,Zhang, Di,Jiao, Shujuan,Huang, Guangyu,&Guo, Jinghui.(2022).New Insight From the First Application of Ti-in-Quartz (TitaniQ) Thermometry Mapping in the Eastern Khondalite Belt, North China Craton.FRONTIERS IN EARTH SCIENCE,10,15.
MLA Zheng, Yuanyuan,et al."New Insight From the First Application of Ti-in-Quartz (TitaniQ) Thermometry Mapping in the Eastern Khondalite Belt, North China Craton".FRONTIERS IN EARTH SCIENCE 10(2022):15.

入库方式： OAI收割

来源：地质与地球物理研究所

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