Fluid during the UHP metamorphism: constraints from the petrology,;oxygen isotope and fluid inclusion studies of the Sulu UHP metamorphic;rocks.

	Fluid during the UHP metamorphism: constraints from the petrology,;oxygen isotope and fluid inclusion studies of the Sulu UHP metamorphic;rocks.
	Zhang ZeMing 3; Shen Kun ; Zhao XuDong ; Shi Chao
刊名	ACTA PETROLOGICA SINICA
	2006
卷号	22 期号:7 页码:1985-1998
关键词	continental deep subduction UHP metamorphism fluid-rock interactions
ISSN号	1000-0569
英文摘要	Based on the comprehensive investigations of the petrology, oxygen isotope, fluid inclusion and nominally anhydrous minerals (NAMs) of the ultrahigh-pressure (UHP) metamorphic rocks from the Sulu orogenic belt it has been shown that fluids have played important and multiple roles and experienced complicated evolution processes by fluid-rock interactions during the subduction and exhumation of the continental crust. The features are as follows. (1) The supracrustal materials were extensively hydrated by the interaction with cold meteoric water with extremely low oxygen isotopic compositions. (2) A series of dehydration reactions took place during subduction of the hydrated continental crust; the released fluids mainly entered into volatile-bearing HP and UHP minerals, such as glaucophane, phengite and epidote, apatite, and into nominally anhydrous minerals, such as garnet, omphacite, rutile and coesite. (3) The salinity of the fluids increased by selective reactions with UHP metamorphic minerals; consequently high-salinity and high density aqueous fluids were produced at the peak-UHP metamorphism. In addition, fluids of CO2, N-2, CH4 or their mixtures occurred locally that are probably related with decomposition of organic substances. (4) Fluids exsolved from the NAMs are the main source for the HP hydrations of retrogression and for the forming of local HP veins during the early stage of uplift of UHP rocks. (5) Extensive amphibolite-facies retrograde metamorphism of UHP rocks took place by pervasive activities of low-salinity aqueous fluids. (6) The greenschist-facies overprinting and low-pressure quartz veins were produced by low-temperature fluid-rock interactions along the ductile-shear zones and brittle faults during the late stage of uplift of UHP rocks. (7) H2O and/or CO2-HO2 fluids with variable salinity were dominated during the subduction and exhumation of the continental crust.
学科主题	变质岩岩石学
WOS关键词	ULTRAHIGH-PRESSURE ECLOGITES ; EASTERN-CENTRAL CHINA ; P-T PATH ; SCIENTIFIC DRILLING PROJECT ; DORA-MAIRA MASSIF ; DABIE-SHAN ; GARNET ; PERIDOTITES ; JIANGSU-PROVINCE ; SUBDUCTION ZONES ; WESTERN ALPS
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000245957000026
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38236]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.Geol Inst Shandong Prov, Jinan 250013, Peoples R China. 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Zhang ZeMing,Shen Kun,Zhao XuDong,et al. Fluid during the UHP metamorphism: constraints from the petrology,;oxygen isotope and fluid inclusion studies of the Sulu UHP metamorphic;rocks.[J]. ACTA PETROLOGICA SINICA,2006,22(7):1985-1998.
APA	Zhang ZeMing,Shen Kun,Zhao XuDong,&Shi Chao.(2006).Fluid during the UHP metamorphism: constraints from the petrology,;oxygen isotope and fluid inclusion studies of the Sulu UHP metamorphic;rocks..ACTA PETROLOGICA SINICA,22(7),1985-1998.
MLA	Zhang ZeMing,et al."Fluid during the UHP metamorphism: constraints from the petrology,;oxygen isotope and fluid inclusion studies of the Sulu UHP metamorphic;rocks.".ACTA PETROLOGICA SINICA 22.7(2006):1985-1998.