Silicon and Oxygen Isotopic Composition of Igneous Rocks from the Eastern Manus Basin
文献类型：CNKI期刊论文
| 作者 | ZHAO Huijing; ZENG Zhigang; YIN Xuebo; CHEN Shuai |
| 发表日期 | 2014-06-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | Si isotope O isotope igneous rocks eastern Manus Basin |
| 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 δ30Si and δ18O 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 δ30Simean value=-0.17‰±0.17‰ and δ18Omean value= +6.07‰±0.57‰ are higher than normal δ30Si and δ18O values of mantle, and we propose that these igneous rocks in the eastern Manus Basin are affected by hydrothermal alteration. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Key Basic Research Program of China (Grant No. 2013CB429700) ; National Natural Science Foundation of China (Grant Nos. 40976027, 40830849 and 40906029) ; Shandong Province Natural Science Foundation for Distinguished Young Scholars (Grant No. JQ200913) |
| 卷 | v.13期:03页:79-85 |
| 语种 | 英文; |
| 分类号 | P736.3;P588.1 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190443]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.SeafloorHydrothermalActivityLaboratoryoftheKeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.GraduateUniversityofChineseAcademyofSciences |
| 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. 2014. |
入库方式： OAI收割
来源：海洋研究所
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