Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning

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	Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning
其他题名	Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning
	Shao Jian 1; Zhang Hongfu 1; Liu Xiaoming 1; Li Zhitong 1
	2007
发表期刊	PROGRESS IN NATURAL SCIENCE
ISSN	1002-0071
卷号	17 期号:8 页码:943-947
摘要	Cathodoluminescence spectroscopic analysis of zircons in the uppermost sanukites of the early Cretaceous Yixian Formation in Western Liaoning reveals zoning structures of the zircons in the volcanic rocks. LA-ICP-MS chronometry shows that the central part of the zircons is remnant zircon with a U-Pb dating of 254 Ma, which is consistent with the age of the Early Mesozoic underplating granulites, and that the periphery is zircon crystallizing out of the host magma with a U-Pb dating of 116 Ma, which is highly consistent with the Ar-Ar dating of the host volcanic rocks. Compositions of the clinopyroxenes xenocrystals in the sanukites are similar to those of the clinopyroxenes in the underplating granulites, indicating that the granulites accreted to the tower crust in the Early Mesozoic have been reformed and disrupted by the upwelling diapers of the asthenosphere and taken part in formation of the sanukites in the Late Mesozoic.
其他摘要	Cathodoluminescence spectroscopic analysis of zircons in the uppermost sanukites of the early Cretaceous Yixian Formation in Western Liaoning reveals zoning structures of the zircons in the volcanic rocks. LA-ICP-MS chronometry shows that the central part of the zircons is remnant zircon with a U-Pb dating of 254 Ma, which is consistent with the age of the Early Mesozoic underplating granulites, and that the periphery is zircon crystallizing out of the host magma with a U-Pb dating of 116 Ma, which is highly consistent with the Ar-Ar dating of the host volcanic rocks. Compositions of the clinopyroxenes xenocrystals in the sanukites are similar to those of the clinopyroxenes in the underplating granulites, indicating that the granulites accreted to the tower crust in the Early Mesozoic have been reformed and disrupted by the upwelling diapers of the asthenosphere and taken part in formation of the sanukites in the Late Mesozoic.
关键词	YIXIAN FORMATION PROVINCE CRATON DISCOVERY XENOLITHS BASALTS BENEATH northern margin of North China Mesozoic volcanic rock U-Pb chronometry of zircon underplating granulite
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3178424
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/144361
专题	中国科学院金属研究所
作者单位	1.北京大学 2.中国科学院 3.西北大学 4.中国科学院金属研究所
推荐引用方式 GB/T 7714	Shao Jian,Zhang Hongfu,Liu Xiaoming,et al. Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning[J]. PROGRESS IN NATURAL SCIENCE,2007,17(8):943-947.
APA	Shao Jian,Zhang Hongfu,Liu Xiaoming,&Li Zhitong.(2007).Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning.PROGRESS IN NATURAL SCIENCE,17(8),943-947.
MLA	Shao Jian,et al."Chronological record of the Early Mesozoic underplating in the northern margin of North China - U-Pb chronometry of zircons in the Late Mesozoic andesite from Western Liaoning".PROGRESS IN NATURAL SCIENCE 17.8(2007):943-947.