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(一) 中间地块存在的依据及边界条件 1.研究古生代板块运动的学者如波特与麦克罗森等人所指出的:都认为“可能沿大陆边缘曾经形成过的其他类型早期古生代盆地……已被摧毁”。而我国已经问世的几篇关于新疆板块运动的著作中却将准噶尔盆地描绘成:在古生代时期长期向南北消减收缩的洋板块、它不仅没有被南北陆板块吞噬而消亡,反而成为一幸存的三角形的收缩海槽盆地。世界之大,无奇不有,但我们认为合乎逻辑的板块运动模式莫过于承认准噶尔中间地块的存在,它在古生代时期不是洋板块,而是陆板块。
(1) Grounds and boundary conditions for the existence of middle parcels 1. Scholars who studied the Paleozoic plate movement pointed out by Porter and McCloshan et al. Both considered that “other types of early Paleozoic basins that may have been formed along the margin of the continental margin ... ... has been destroyed. ” However, in the works published in the movement of the plate in Xinjiang, our country has described the Junggar Basin as a plate that reduced and contracted north and south for a long time during the Paleozoic. It not only failed to swallow up the plates of the North and the South, but became a surviving triangle Shrinkage Trough Basin. The greatness of the world is remarkable. However, we believe that the logical model of the plate movement is to acknowledge the existence of the central Junggar block, which was not the ocean plate in the Paleozoic period, but rather the continental plate.