Silicon and oxygen isotopic composition of igneous rocks from the eastern Manus Basin

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Silicon and oxygen isotopic composition of igneous rocks from the eastern Manus Basin
	Zhao Huijing 1,2; Zeng Zhigang 1; Yin Xuebo 1; Chen Shuai 1
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2014-06-01
卷号	13 期号:3 页码:421-427
关键词	Si isotope O isotope igneous rocks eastern Manus Basin
通讯作者	Zeng, ZG (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China.
英文摘要	This paper reports silicon and oxygen isotopes of 20 kinds of igneous rocks and their major elements from the eastern Manus Basin. Combining silicon and oxygen isotopic data from other studies, we suppose that both delta Si-30 and delta O-18 values increase with the increasing of SiO2 content. It means that the fractionation of silicon and oxygen isotopes are affected by the silica content. The positive correlation between CaO/Al2O3 ratios and MgO and that between Si/Al and SiO2 content indicate that clinopyroxene is the predominant mineral phase in our samples. We suppose that the fractionation of silicon and oxygen isotopes are influenced by mineral fractional crystallization. Probably, it is due to their different silicon and oxygen bridges. In this study, the delta S-30(imean value) = -0.17aEuro degrees +/- 0.17aEuro degrees and delta O-18(mean value) = +6.07aEuro degrees +/- 0.57aEuro degrees are higher than normal delta Si-30 and delta O-18 values of mantle, and we propose that these igneous rocks in the eastern Manus Basin are affected by hydrothermal alteration.
学科主题	Oceanography
收录类别	SCI
语种	英语
WOS记录号	WOS:000335672600010
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23846]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao Huijing,Zeng Zhigang,Yin Xuebo,et al. Silicon and oxygen isotopic composition of igneous rocks from the eastern Manus Basin[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2014,13(3):421-427.
APA	Zhao Huijing,Zeng Zhigang,Yin Xuebo,&Chen Shuai.(2014).Silicon and oxygen isotopic composition of igneous rocks from the eastern Manus Basin.JOURNAL OF OCEAN UNIVERSITY OF CHINA,13(3),421-427.
MLA	Zhao Huijing,et al."Silicon and oxygen isotopic composition of igneous rocks from the eastern Manus Basin".JOURNAL OF OCEAN UNIVERSITY OF CHINA 13.3(2014):421-427.