naa a22 4500 510753957 CHVBK 20180411083115.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s13131-013-0396-z doi (NATIONALLICENCE)springer-10.1007/s13131-013-0396-z Characteristics of silicon and oxygen isotopic compositions of basalts near East Pacific Rise 13°N [Elektronische Daten] [Xiaoyuan Wang, Huijing Zhao, Zhigang Zeng, Xuebo Yin, Shuai Chen, Yao Ma] In this study, 13 groups of silicon and oxygen isotopes and major elements of the basalts near the East Pacific Rise 13°N are used to study the fractionation of silicon and oxygen isotopes. Among these data, Δ30Si values of basalts vary from −0.4‰ to 0.2‰ with a mean value of Δ30Si of (−0.18±0.22)‰. The δ18O values range from 4.1‰ to 6.4‰ with a mean Δ18O value of (+5.35±0.73)‰. Since the δ30Si values increase in the series of basalt-basaltic andesite-andesite, and δ18O values display a positive correlation with the SiO2 content, we propose that the fractionation of silicon and oxygen isotopes is influenced by the SiO2 content in igneous rocks. Compared with the igneous rocks from Manus Basin with clinopyroxene as their dominant mineral phase, MORBs in this study containing olivine and plagioclase as primary minerals have lower Δ18O and Δ30Si values, indicating that the fractionation of silicon and oxygen isotopes is also affected by different Si-O bridges in silicate minerals. Furthermore, our samples from the EPR are defined as E-MORB based on K/Ti ratios. Probably, the difference in Δ30Si and Δ18O between our samples and a normal MORB are cause by the enriched components in E-MORBs. The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg, 2013 silicon and oxygen isotopes nationallicence basalt nationallicence East Pacific Rise near 13°N nationallicence Wang Xiaoyuan Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Zhao Huijing Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Zeng Zhigang Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Yin Xuebo Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Chen Shuai Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Ma Yao Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Acta Oceanologica Sinica Springer Berlin Heidelberg 32/12(2013-12-01), 104-108 0253-505X 32:12<104 2013 32 13131 https://doi.org/10.1007/s13131-013-0396-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13131-013-0396-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Xiaoyuan Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Zhao Huijing Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Zeng Zhigang Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Yin Xuebo Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Chen Shuai Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Ma Yao Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 773 0- Acta Oceanologica Sinica Springer Berlin Heidelberg 32/12(2013-12-01), 104-108 0253-505X 32:12<104 2013 32 13131 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer