马里亚纳海槽中央轴裂谷中的小扩张脊部位，广布火山喷发的玄武岩体，海底热液硫化物就是从这些岩体的裂隙中喷溢堆积起来的。
The basalt lithosomes are widely distributed on the small spreading ridge in the Mariana Trough central axis rift , and the submarine hydrothermal sulfides were erupted and accumulated from the cracks of these lithosomes .
中央裂谷