摘要
通过对渤海湾盆地济阳坳陷沾化凹陷孤北古2井上古生界石炭系太原组"煤系地层"选样进行孢粉分析发现了裸子类化石。指出裸子类化石的发现将裸子类植物出现的时期从晚二叠世提前到晚石炭世,改变了植物的演化过程;修正了传统的地层划分方案,为沾化凹陷东部上古生界的划分提供了新的化石依据。
Through the analysis of the ＂coal measure strata＂ samples of Carboniferous Taiyuan Formation of Upper Paleozoic in Well Gu2 of Gubei of Zhanhua subbasin, Jiyang Depression of Bohai Bay Basin, the gymnosperm fossil is discovered. The discovery changed the evolution process of plants and proved that the appearing stage of gymnosperm fossil advanced from Late Permian to Late Carboniferous. This revises the partition plan of traditional geologic strata and provides the new fossil bases for the dividing of Upper Paleozoic strata in the eastern Zhanhua subbasin.
出处
《断块油气田》
CAS
2008年第1期28-30,共3页
Fault-Block Oil & Gas Field
关键词
太原组
裸子化石
地质意义
Taiyuan Formation, gymnosperm fossil, geological meaning.
