Calcium isotopic compositions of mid-ocean ridge basalts

Hongli Zhu1, Zhaofeng Zhang2, Weidong Sun1 and Guiqin Wang3, (1)GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, (2)State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, (3)GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Isotope Geochemistry, Guangzhou, China