The paper pointed out the lacustrine mudstones of Jiufotang and Shahai Formations are petroleum source strata in the basin, and discussed main oil generating depressions and oil-bearing structures.

• 指出九佛堂组、沙海组的湖相泥岩为盆地内的生油岩,并论述了盆地内主要生油洼陷及储油构造。