川康大向斜位于川西北及川康交界一带,呈一弧形。此大向斜于志留纪即具雏形,在泥盆石炭两纪时特别发育而显著,殆二叠纪后即行消减,此大向斜并未变位,亦未迁移,致其陷落地带,历经各期造山运动之影响,构成四川赤盆西部之复杂 Chuan Kang synopsis is located in the northwest of Sichuan and Chuan Kang junction area, showing an arc. This large syncline in the Silurian that rupture, especially in the Devonian Carboniferous during the development and significant, since the Permian that line to eliminate, this big syncline did not change position, nor migration, causing its fall zone, After various periods of orogenic movement, the composition of the western part of the basin of Sichuan Province is complex