Cerium anomaly and cerium thermodynamics in the sea water

作     者：Wang Yunliang and Zang Desen(The Third Department,Chengdu University of Technology, Chengdu 610059, China) 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：1994年第13卷第3期

页      面：389-400页

核心收录：

学科分类：070702[理学-海洋化学] 07[理学] 0707[理学-海洋科学] 

主　　题：Cerium anomaly carbonate thermodynamics 

摘      要：Cerium anomaly in a marine carbonatite could be used as an indicator of redox condition in the paleosea- water. The bottom sea water of the Angola Basin and the Brazil Basin (SOuth Atlantic Ocean) was anoxic duringCretaceous period. At about 58×106-54×106 a BP, the sea water of the South Atlantic Ocean became oxidizedcondition which was similar to that of the modern Atlantic Ocean. This paper presents a new cerium redox thermodynamic equation which could explain the long-standing problems, such as the different characteristics of the ceriumanomalies in the sea water and river water and why there are positive cerium anomalies in the surface sea water,*** reveals that at 58×106-54×106 a BP, the plates of Africa and South America were separatedfrom each other thoroughly and the unified Atlantic Ocean took shape. We suggest that the Alpine and Himalayanmovements were in synchronism.