单词oligocene
n.: 【地】渐新世(的)；渐新统(的)
网络: 渐新世时期；新渐世；渐新世界
【地质学;地理学】渐新世(的);渐新统(的)
渐新纪的
渐新统折
any of many extinct cats of the Old and New Worlds having long sword like upper canine teeth; from the Oligocene through the Pleistocene.
东半球许多已经灭绝的猫科动物，其上犬齿形如长剑；生活在从渐新世经由更新世时期。
As in the Oligocene before it, grasslands continued to expand and forests to dwindle in extent.
在先前的渐新世，草地的面积增大，森林的面积减少。
The west side of the lake offers much older fossils from the Miocene, Oligocene and Cretaceous eras (including dinosaur remains).
而盆地西部的化石，年代则更古老，从含有恐龙遗迹的白垩纪，到渐新世与中新世。
Hundred years, Quanzhou experienced many historical changes, the new interactive air-filled history of old customs, culture Oligocene.
百多年来，泉州经历多次历史变革，新风旧俗交互递嬗，风气渐新。
the Upper Cretaceous was in the higher base level, which developed fan delta- lacustrine facies until late Oligocene.
上白垩统基准面快速抬升，沉积区整体处于湖泊-扇三角洲沉积体系，一直持续到古近系渐新统晚期。
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。
In the Ostra Field, 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。
Oligocene A geological epoch in the Tertiary, between Eocene and Miocene, lasting from about 38 to 25 million years ago.
渐新世纪第三纪始新世与中新世之间的地质纪元，大约从三千八百万年持续到二千五百万年前的一段时间。
Baiyun Movement, a Great Tectonic Event on the Oligocene-Miocene Boundary in the Northern South China Sea and Its Implications
白云运动：南海北部渐新统-中新统重大地质事件及其意义
Occurrence of Palygorskite in Late Oligocene in Linxia Basin and Its Geological and Climatic Indicator
临夏盆地晚渐新世沉积物中坡缕石的发现及其环境气候意义