Research Institute of Petroleum Exploration and Development 100083;
State Key Laboratory of Marine Geology University Shanghai 200092;
Key Laboratory of Petroleum Resources Research of Geology and Geophysics Academy of Sciences 730000;
Jidong Oil Company 063004;
Argillaceous; source; rock; Occurrence; Free; FRACTION; CM-bound; FRACTION; Bicyclic; sesquiterpenoids; BOTRYOCOCCUS; braunii; BIOGENIC; SIGNIFICANCE;