from 40 million to 25 million years ago; appearance of sabertoothed cats
双语例句
1. Oligocene erosion had truncated the sediments draped over the dome.
覆盖于穹丘上的沉积岩为渐新世侵蚀所截削.
来自辞典例句
2. Beibu Wan Basin was a lake in the middle Eocence - Lower Oligocene.
北部湾 盆地在中始新世至早渐新世是一个湖泊.
来自互联网
3. There are four hydrocarbon source rocks, Palaeocene, Eocene, Oligocene and Miocene.
西湖凹陷发育古新统 、 始新统 、 渐新统及中新统四大烃源岩系.
来自互联网
4. Paleogene Oligocene Linhe formation ( E _ 3 J ) and Eocene Wulate formation ( E _ 2 wl ).
下第三系渐新统临河组 ( E_3l ),始新统乌拉特组 ( E_2wl ).
来自互联网
5. The differences between Oligocene series in the east and west are demonstrated.
指出了盆地东部和西部渐新统存在的差异.
来自互联网
用作名词 (n.)
Beibu Wan Basin was a lake in the middle Eocence-Lower Oligocene. 北部湾盆地在中始新世至早渐新世是一个湖泊。
Venezuela, oil is produced from lenticular sandstone beds of the Oligocene oficina Formation. 委内瑞拉奥斯特拉油田的产油层，为渐新世奥菲西那组透镜状砂岩层。
The continental deposits of Enping formation aged from Oligocene to Eocene of Palaeocene are well-developed and widespreaded in the Pearl River Mouth Basin. 珠江口盆地下第三系始新统至渐新统恩平组分布广泛。
用作形容词 (adj.)
Beibu Wan Basin was a lake in the middle Eocence-Lower Oligocene. 北部湾盆地在中始新世至早渐新世是一个湖泊。
Venezuela, oil is produced from lenticular sandstone beds of the Oligocene oficina Formation. 委内瑞拉奥斯特拉油田的产油层，为渐新世奥菲西那组透镜状砂岩层。
