A new view on consumption and regeneration of the continental crust: enlightenment from the new regional geological researching on the UHP rocks in the Dabie mountains, China.

	A new view on consumption and regeneration of the continental crust: enlightenment from the new regional geological researching on the UHP rocks in the Dabie mountains, China.
	Hao, J ; Liu, XH ; Wang, EQ
刊名	ACTA PETROLOGICA SINICA
	2005-11-01
卷号	21 期号:6 页码:1677-1686
关键词	Dabie Mountains Continental Crust Consumption And Regeneration Underplating Pail Melt Diapir Penetration
ISSN号	1000-0569
文献子类	Article
英文摘要	In the Dabie Mountains, more and more regional geological data show that the UHP continental rocks and the coesite-bearing zircons, omphicite-bearing garnets, etc. which have extensively been discovered within gneiss country rock were relics from a melted eclogitized continental slice and kept within the high-grade gneiss country rock which is composed Of a Suite of metamorphic and ductile deformed plutons intruded under Newprotozoic low to mid-grade metamorphic volcanic-sedimentary strata on the Yangtze northern margin. Based on these facts, we suggest that the eclogite-bearing gneiss is not an "UHP terrance" or "m lange" included eclogite fragments and its protolith should be a suite of magmatic diapirite produced by an eclogitized continental slice melting, and advance a new hypothesis for continental crust consumption and regeneration and model of the Dabie collision zone evolutiona, that is after deep-subducted continental margin underwent the HP to UHP eclogite-facies metamorphism at different depth in anthenosphere, whit the subducted oceanic crust and continental mantle broken-off, the continental crust rapidly underplated under the obducted margin by buoyancy and took place part melt as rapidly decompression and mantle-heat input, and the melted mass replaced "former root" of the margin and diaper penetrated under the metamorphic strata, and at the same time of crystallizing, it experienced coordinating metamorphism and deformation with its depth to produce a high-grade orthrgneiss, that is "regenerated crust".
WOS关键词	ULTRAHIGH-PRESSURE METAMORPHISM ; SHAN ; GEOCHRONOLOGY ; TERRANE ; COMPLEX ; ZIRCON
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000234692900015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/65246]
专题	中国科学院地质与地球物理研究所
通讯作者	Hao, J
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Tibet Plateau, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Hao, J,Liu, XH,Wang, EQ. A new view on consumption and regeneration of the continental crust: enlightenment from the new regional geological researching on the UHP rocks in the Dabie mountains, China.[J]. ACTA PETROLOGICA SINICA,2005,21(6):1677-1686.
APA	Hao, J,Liu, XH,&Wang, EQ.(2005).A new view on consumption and regeneration of the continental crust: enlightenment from the new regional geological researching on the UHP rocks in the Dabie mountains, China..ACTA PETROLOGICA SINICA,21(6),1677-1686.
MLA	Hao, J,et al."A new view on consumption and regeneration of the continental crust: enlightenment from the new regional geological researching on the UHP rocks in the Dabie mountains, China.".ACTA PETROLOGICA SINICA 21.6(2005):1677-1686.