Eocene series

• 始新统

Eocene series的用法和样例：

例句

1. 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。
2. 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。