HE Yong, YANG Jiedong) Lanzhou Institute Glaciology, Geocryology, Lanzhou, ) Center of Modern Analysis, Nanjing University, Nanjing,.2001. Study and Correlation of C and Sr Isotope in the Shell of Tridacna Squamosa from Xisha Islands[J]. Acta Geologica Sinica,75(2):151-155