... spreading in the South China Sea, Earth Plan.Sci.Letter 95 (1989) 307 [4] Department of Geology and Tectonics of South China Sea, Institute of Oceanology, Academia Sinica, South China Sea Geological ... VNU Journal of Science, Earth Sciences 24 (2008) 43-51 Petrography and Eastern Sea basalts petrochemistry of According to the research data of seismic measurements on the Eastern Sea, the volcanic ... that, mainly the volcanic activity in Eastern Sea was strongly developed after the closing time of the spreading process of Eastern Sea Fig Schema distribution of geomagnetic anomaly lines [2, 3]...