摘要
The Nansha sea area is located in the place where the Pacific Ocean plate, In-dian-Australian plate and Eurasian plate meet, and therefore, its formation and evolu-tion are both constrained by those three plates. It is a semi-closed marginal sea area,which is only connected with the Indian and the Pacific Ocean by channels. TheSr-O isotopic composition of sediments in this area was systematically studied for fur-ther understanding of its formation and evolution. The range of our investigation islimited to the area of 105-118°E and 3 - 12°N. The surface sediments from 36 sta-tions, which are distributed in the above area, were analyzed. All of the
