[1] Burk. W. N.,1982. Variation of seawater 87sr/86sr throughout phanerozoic time. Geology. Vol. 10. No. 10.
[2] B. N. Popp et al.,1986, 87sr/86sr ratios in permo一〔arboniferous seawater from the analyes of well一preserved brachiopodshell. Geochimica et casmachimica Acts.,Vo1.50, p. 1321~1308.
[3] J. Veizet et al.,1986.Geochemistry of brachiopods;Oxygen and Carbon isotopic records of Paleozoic oceans. Geochimica et cosmochimica Acts. Vol. 50, p. 1679~1696.
[4] 卢长武等,1985,川南古宋早二益统海相碳酸盐岩的碳、氧同位紊研究,矿物岩石,(4).