印支地块和华南地块是在中生代早期碰撞缝合在一起的，构成了古南海北部陆缘。
The Indochina block and South China block have collided and sutured together in early Mesozoic, and formed the northern mar - gin of proto-South China Sea Basin.
早阶段构造组合与板块俯冲-碰撞有关，形成缝合带-陆缘弧系统；
The early stage tectonic organize related to the plate subduction, collision forms suture belt and precontinental arc system ;
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