Keywords Sichuan Basin;Caledonian orogeny;Paleostructure;Sinian period;Cambrian period;Source Reservoir Cap assemblage;Gas reservoir formation;Karst reservoir;

• 四川盆地;加里东运动;古构造;震旦纪;寒武纪;生储盖组合;气藏形成;岩溶型油气藏;