PetroChina Research Institute of Petroleum Exploration&Development 100083;
PetroChina Key Laboratory of Oil&Gas Reservoir 100083;
PetroChina Southwest Oil and Gas Field Company 610041;
Research Institute of Exploration and Development Southwest Oilfield Company 610041;
Yangtze University 430100;
Sichuan Basin; JURASSIC; Lianggaoshan Formation; heavy mineral assemblage; zircon U-Pb dating; lake basin migration; provenance analysis; basin-mountain evolution;