New understandings of cretaceous oil generation zone in foreland basin in southern margin of junggar 准噶尔盆地南缘前陆盆地白垩系生油的新认识
2.
Terrestrial sediments consist mainly of fluvial and lacustrine facies have the following characteristics : lacustrine basins have undergone a long continuous and fast subsidence and contain many terrestrial source rock sequences ; sedimentary facies of terrestrial basins are deposited in a ring formation . the best source beds are the continental source beds which contain dark shale 陆相沉积以河流湖泊相为主，其基本特征有：长期快速沉降的湖相沉积盆地是陆相生油的发育区；陆相湖盆的沉积相带大都是环状分布，暗色泥岩是最佳生油层。
