transitional crust

The South China Sea is a huge marginal sea at East-Asian continental margin, and a tectonic region of the transitional crust type from continental to oceanic.

南海是东亚大陆边缘的巨型陆缘海，属大陆&大洋过渡型地壳构造区。

Inversion shows Moho discontinuity depth increase from land to sea and the distribution of continental crust, extensional crust, transitional crust and oceanic crust.

反演得到的莫霍面总体趋势由陆向洋抬升，反映陆壳、拉伸陆壳、过渡壳、洋壳的分布。

Most earthquakes ( M ≥ 6.0) distributed within transitional zones between high and low velocity area or high velocity area in the upper crust, the earthquakes in low velocity were minority.

M≥6.0地震大多数分布在上地壳高速区与低速区的交接地带或高速区，低速区内的地震活动相对较少；

Xingcheng movement is a tectonization in the transitional time from the active stage of the earth's crust to the stable stage.

它是地壳从活动阶段向稳定阶段过渡的地壳变动。