单词：the Eocene
始新世；始新统
the Eocene的用法和样例：
例句
- And third, there is geological evidence for plant extinctions in the Eocene.第三，我们已经收集到始新世时代植物灭绝的地质证据。
- In the northwest Pacific domain, the folding age is from Late Jurassic to Middle Eocene, and in the Tethys domain it is between Middle and Late Eocene.主要褶皱时代很晚，在南北太平洋大地构造域是晚侏罗世至中始新世，在特提斯大地构造域是中晚始新世之交。
- The funnel-shaped self-potential curve of the Eocene sands is well marked.始新统砂层的漏斗形自然电位曲线形态很明显。
- The first spreading cycle resulted in the formation of Wenchang mudstone, Eocene,which is the important and main source rock of the basin.第一扩张旋回中形成的始新统文昌组泥岩是珠江口盆地的主要烃源岩。