摘要
热鲁组因其下部发现孢粉、轮藻等化石,被定为始新世,但其上部地层时代无从定论。笔者等最近在上部地层中发现较多的植物孢粉,并建立了Lycopodiumsporites oligocenicus-Ephedripites(Distachyapites)eocenipites-Peltan-dripites davissii孢粉组合带,确定热鲁组上部地层的形成时代为始新世。
The sporomorphs and charophyte fossils were previously discovered in the lower part of the Relu Formation of Eocene age. However, little has been known for the age of the upper strata of the Relu Formation. Recently, abundant sporomorphs have been recognized by the authors in the upper strata of the Relu Formation in the geological survey of the 1：250 000 Mengshacun Sheet, resulting in the establishment of the sporopollen assemblage zone Lycopodiumsporites oligocenicus-Epkedripites （ Distachyapites ） eocenipites-Peltandripites davissii. The discovery of the above-mentioned sporomorphs allows the dating of the upper strata of the Relu Formation also as the Eocene.
出处
《沉积与特提斯地质》
CAS
CSCD
2005年第4期42-45,共4页
Sedimentary Geology and Tethyan Geology
基金
中国地质调查局1:25万蒙沙村幅地质调查项目(200213000017)
关键词
孢粉
热鲁组
始新世
石渠
四川
sporopollen
Relu Formation
Eocene
Serxu
Sichuan
