论文部分内容阅读
海西—印支期，西秦岭地区受古特提斯洋的影响在前海西期变质基底之上发育三期裂陷活动（１．泥盆纪；２．石炭纪；３．二叠至三叠纪），造成该区地层展布呈条带状．深水沉积与浅水沉积相间，以及活动型海槽沉积与稳定型浅海沉积相间的格局．是加里东期之后秦岭构造带东西分异的主要原因。
The Hercynian-Indosinian and western Qinling areas were affected by the Ghat Tethys Ocean. During the Pre-Hercynian metamorphic basement, the third-stage rifting (1. Devonian; 2. Carboniferous; 3. Permian Triassic), resulting in stratigraphic distribution of the area was strip. Deep water sediments and shallow water sedimentary facies, as well as active trough deposition and stable shallow sea sedimentary patterns. Is Caledonian Qinling tectonic belt after the main reason for the differentiation.