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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
Zheng, Yuanyuan1,2,3; Qi, Yang1,2,3; Zhang, Di1,2; Jiao, Shujuan1,2; Huang, Guangyu1,2; Guo, Jinghui1,2
2022-03-29
Source PublicationFRONTIERS IN EARTH SCIENCE
Volume10Pages:15
AbstractThe 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.
KeywordTi-in-quartz (TitaniQ) thermometer aluminous gneiss granulite UHT metamorphism thermal regime the khondalite belt North China Craton
DOI10.3389/feart.2022.860057
WOS KeywordULTRAHIGH-TEMPERATURE METAMORPHISM ; HELANSHAN COMPLEX ; PHASE-EQUILIBRIA ; WESTERN BLOCK ; U-PB ; COLUMBIA SUPERCONTINENT ; PELITIC GRANULITES ; JINING COMPLEX ; EVOLUTION ; BEARING
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000783718100001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105107
Collection岩石圈演化国家重点实验室
Corresponding AuthorJiao, Shujuan
Affiliation1.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
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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.
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