Overpressures induced by coesite-quartz transition in zircon

	Overpressures induced by coesite-quartz transition in zircon
	Ye, K ; Liou, JB ; Cong, BL ; Maruyama, S
刊名	AMERICAN MINERALOGIST
	2001-10-01
卷号	86 期号:10 页码:1151-1155
ISSN号	0003-004X
文献子类	Article
英文摘要	More than 120 coesite and few polycrystalline quartz (coesite pseudomorph) inclusions were identified by Raman microspectroscopy in zircons of various kinds from gneissic rocks located in the Dabieshan and Sulu ultrahigh-pressure (UHP) metamorphic terranes in eastern China. The coesite inclusions have undergone, to various degrees, the coesite-quartz, transition. Raman spectra of coesite and subsidiary quartz inclusions show various shifts, which are closely correlated to the extent of the transition. The coesite-pseudomorph inclusions in zircon show the highest Raman shift. Calibrations based on the experimental work of Hemley (1987) yielded inconsistent present-day overpressures (0-24 kbar) in coesite inclusions inside zircons. The availability of fluids, which resulted in the pervasive regional retrogression of the UHP gneisses during later exhumation stages, is regarded as the main factor controlling the extent of the coesite-quartz transition. This study underscores the need for the elastic model applied by previous researchers to explain the preservation of the coesite inclusions in rigid host minerals.
WOS关键词	ULTRAHIGH-PRESSURE ROCKS ; CENTRAL CHINA ; DABIE MOUNTAINS ; EASTERN CHINA ; METAMORPHISM ; INCLUSIONS ; FLUID ; REGION
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	MINERALOGICAL SOC AMER
WOS记录号	WOS:000171445300004
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76711]
专题	中国科学院地质与地球物理研究所
通讯作者	Ye, K
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Lab Lithosphere Tecton Evol, Beijing 100029, Peoples R China 2.Tokyo Inst Technol, Dept Earth & Planetary Sci, Meguro Ku, Tokyo 152, Japan
推荐引用方式 GB/T 7714	Ye, K,Liou, JB,Cong, BL,et al. Overpressures induced by coesite-quartz transition in zircon[J]. AMERICAN MINERALOGIST,2001,86(10):1151-1155.
APA	Ye, K,Liou, JB,Cong, BL,&Maruyama, S.(2001).Overpressures induced by coesite-quartz transition in zircon.AMERICAN MINERALOGIST,86(10),1151-1155.
MLA	Ye, K,et al."Overpressures induced by coesite-quartz transition in zircon".AMERICAN MINERALOGIST 86.10(2001):1151-1155.