Cretaceous System的用法和樣例：
例句
- The main types of clastic sandstones are feldspathic litharenite and lithic arkose in the Cretaceous of the Songliao basin.
松遼盆地白堊系砂岩以長石岩屑砂岩和岩屑長石砂岩為特徵。 - Apatite fission track data suggest that the early Cretaceous strata in the Liupanshan basin were subjected to two burial heating events.
磷灰石裂變徑跡研究表明，六盤山盆地白堊系地層經歷兩次埋深加熱事件。
