The comparison of isoline map measured by GPS with that by leveling shows that in entire trend they, except SouthChinablock, agree with each other basically.
The Indochina block and SouthChinablock have collided and sutured together in early Mesozoic, and formed the northern mar - gin of proto-SouthChina Sea Basin.
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。
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One blocksouth, no lights shine from Nos. 12 and 16, the two towers of the 18-story China Life Plaza. Two blocks farther on are another pair of 18-story buildings, Nos.