秦岭发育了受断裂控制的晚古生代沉积盆地,其基底是具有洋壳、众多碳酸盐岩孤岛以及岛弧、弧前增生楔的洋盆底;盆地的主要边界逆冲断裂表现为背驮式的活动特征;各个盆地虽都有自己的沉积特点,但盆地的相对水深总体由北向南逐渐加大,反映出弧前大陆斜坡的古地理特征;盆地初始规模较大,到后期渐小,盆地充填呈退积序列,揭示了秦岭晚古生代盆地具有弧前增生的背驮型盆地性质。 The Late Paleozoic sedimentary basins controlled by faults are developed in the Qinling Mountains. The basement of the basin is the ocean floor with oceanic crust, numerous carbonate islands and island arcs and pre-argillic wedges. The main boundary thrust faults in the basin are piggyback Although all basins have their own sedimentary characteristics, the relative water depth of the basin generally increases gradually from north to south, reflecting the paleogeographical features of the continental slope before the arc. The initial scale of the basin is small, Fill-back sequence was revealed, revealing the Late Paleozoic Qinling basin basin with arched pre-arctic piggyback nature.