The lowvelocityanomaly chain is located along the convergence belt of Tethys from Mediterranean Sea, Turkey, Iran, Himalayan orogens, Burma, Indonesian Islands.
自地中海经土耳其、伊朗、喜马拉雅山到缅甸、印尼群岛的特提斯汇聚碰撞带,显示为低速异常链。
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The high frequency part of Dongsha high-value magnetic anomaly may be related with Cenozoic basalt and Mesozoic magmatic rocks, and the low frequency part developing high-velocity lower crust.
The geothermal anomaly, lowvelocity zone and high conductivity layer in crust, and frequent occurrence of strong earthquakes show that the study area is an active area of modern tectonization.