摘要
本论文材料来源于青海省南部结扎群,共发现孢粉和疑源类化石51属70种,其中包括一个新种。组合中羊齿类孢子为45％,裸子植物花粉为34％,疑源类21％。孢子中主要为Apiculatisporis 7.9%, Punctatisporites 6%, Dictyophyllidites 3.7%, Raistrickia 3.6%, Lycopodiacidites 2.7%, Lophotriletes 2%, Concavisporites 1.5%, Marattisporites 1.5%, Undulatisporites 1.2%等。花粉主要为Chordasporites 6.7%, Psophosphaeva 3.9%, Ovalipollis 3.6%, Caytoni pollenites2.7%,Cycadopites 3.9%等等,疑源类主要为Micrhystridiam 9.1%, Brocholaminaria 2.2%, Laminarites1.2％等等。这些微体化石组合地质时代属于晚三叠世。
Abundant spore-pollen and Acritarchs are found in Jieza Group (southern Qinghai ) , altogether 51 genera, 70 species, including a species nov..
The microfossil assemblage is made of fernlike spores ( 45%) ; Gymnos-permous pollens ( 34% ) 5 Acritarchs ( 21% ) .Major spores consist of Apic-ulatisporis ( 7.9% ) , Punctatisporites ( 6% ) ; Dictyophllidites (3.7% ) ; Raistrickia ( 3.6% ); Lycopodiacidites ( 2.7% ); Lophotriletes(2%); Conco-risporites ( 1.5% ) ; Marattisporites ( 1.5% ) ; Vndula tisporites ( 1.2% ) , etc.. Pollens are mainly composed of Chordasporites(6.5%), Psophosphaera ( 3.9% ) 5 Ovalipollis ( 3.6% ) ; Pinites ( 2% ) ; Caytonipollenites (2.7%); Cycadopites(3.9%),etc.. Dominant Acritarchs are Micrhystridium(9.1%), Brocholaminaria ( 2.2% ) , Laminarites ( 1.2% ) .etc..
The geological age of those microfossils is late Triassic.
出处
《石油实验地质》
CAS
CSCD
北大核心
1990年第4期438-447,共10页
Petroleum Geology & Experiment
