气候变化领域集成服务门户(CCPortal): Garnet and zircon petrochronology reveal coherent subduction and exhumation of eclogites and associated schists in the Changning-Menglian belt, southeast Tibet

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DOI	10.1016/j.lithos.2024.107552
	Garnet and zircon petrochronology reveal coherent subduction and exhumation of eclogites and associated schists in the Changning-Menglian belt, southeast Tibet
	Zhou, Ying; Cheng, Hao; Peng, Zhi-min; Fu, Yu-zhen; Du, Kai-Yang
发表日期	2024
ISSN	0024-4937
EISSN	1872-6143
起始页码	472
卷号	472
英文摘要	Determining whether high-grade metamorphic eclogites and surrounding metasediments underwent a shared subduction-exhumation cycle or distinct metamorphic paths before their juxtaposition at shallow levels is crucial for deciphering metamorphic processes in orogenic belts. Constructing pressure-temperature-time (P-T-t) paths for both rocks is the most straightforward approach. However, current time constraints overwhelmingly rely on dating accessory mineral like zircon, rutile, and monazite, which may only record a portion of the entire metamorphic history. Here we present an integrated petrochronological analysis using garnet Lu-Hf and Sm-Nd, and zircon U-Pb on two eclogites and their surrounding micaschists from the Changning-Menglian orogenic belt in southeast Tibet. Pseudosection modelling and conventional thermobarometers suggest a clockwise P-T path for the eclogites, from similar to 1.4 GPa/similar to 520 degrees C to similar to 2.5 GPa/similar to 600 degrees C, followed by decompression to
英文关键词	Lu-Hf; Sm-Nd; Eclogite; Country rock; Subduction; Tibet
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
WOS类目	Geochemistry & Geophysics ; Mineralogy
WOS记录号	WOS:001197834000001
来源期刊	LITHOS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288189
作者单位	Tongji University
推荐引用方式 GB/T 7714	Zhou, Ying,Cheng, Hao,Peng, Zhi-min,et al. Garnet and zircon petrochronology reveal coherent subduction and exhumation of eclogites and associated schists in the Changning-Menglian belt, southeast Tibet[J],2024,472.
APA	Zhou, Ying,Cheng, Hao,Peng, Zhi-min,Fu, Yu-zhen,&Du, Kai-Yang.(2024).Garnet and zircon petrochronology reveal coherent subduction and exhumation of eclogites and associated schists in the Changning-Menglian belt, southeast Tibet.LITHOS,472.
MLA	Zhou, Ying,et al."Garnet and zircon petrochronology reveal coherent subduction and exhumation of eclogites and associated schists in the Changning-Menglian belt, southeast Tibet".LITHOS 472(2024).