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塔里木盆地泥盆统- 三叠系层 序地层可划分为 2 个巨层序、5 个超层序、12 个层序。晚泥盆 世- 三叠纪区域大地构造演化经历了“古 新疆板块”的局部裂解与 再拼贴的过程 ,塔里木盆地 则经历了晚泥 盆世- 早二叠 世弧后裂谷和 晚二叠世- 三叠 纪前陆盆地两个阶 段。巨层序Ⅰ为弧后裂谷演化阶段 的产物,其中超层序Ⅰ A 代表克拉 通内坳陷盆地的沉积,超 层序Ⅰ B 代表弧后 克拉通内裂谷盆地 充填沉积。巨层序Ⅱ为前陆盆地演 化阶段的沉积,其中超层序Ⅱ A 代表周缘前陆 盆地的充填沉 积,超层序Ⅱ B 和 超层序Ⅱ C 是内陆 坳陷盆地的沉积。研究表明,构造 作用在大部分Ⅲ级层序形成中起着 决定性作用,只是在构造相对稳定的 晚泥盆世- 石炭纪的被动 大陆边缘和克拉通盆地演化时期, 全球海平面的升降变化才对其层序 的形成起了较大的作用。
The Devonian-Triassic sequence stratigraphy in the Tarim Basin can be divided into two giant sequences, five super sequences and 12 sequences. The tectonic evolution of the Late Devonian-Triassic region underwent the process of local pyrolysis and re-collage of the “ancient Xinjiang plate”. The Tarim Basin experienced the Late Devonian-Early Permian post-arc rift and the late-second The two phases of the Permian-Triassic foreland basin. The giant sequence Ⅰ is the product of the post-arc rift evolution stage, in which the super-sequence Ⅰ A represents the sedimentation of the cratonic intra-basin and the super-sequence Ⅰ B represents the filling and deposition of the intra-arc cratonic intra-rift basin. Jurassic Ⅱ is the sedimentation of the evolutionary stage of the foreland basin, in which the super-sequence Ⅱ A represents the filling and deposition of the peripheral foreland basin, and the super-sequence Ⅱ B and super-sequence Ⅱ C are the sediments of the inland depression. The study shows that tectonism plays a decisive role in the formation of most grade Ⅲ sequences except that during the relatively stable Late Devonian-Carboniferous passive continental margin and craton evolution, the global sea level rise and fall The formation of its sequence played a greater role.