青海南部晚三叠世结扎群孢粉和疑源类

LATE TRIASSIC SPORE-POLLEN AND ACRITARCHS IN JIEZA GROUP, SOUTHERN QINGHAI PROVINCE

冀六祥 王从风

Ji Liuxiang Wang Congfeng

青海省第二区域地质调查队 2. 地质矿产部石油地质中心实验室 无锡

No.2 Regional Geology Survey, Qinghai Province 2. Central Laboratory of Petroleum Geology, MGMR

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 Apiculatisporis (7.9%), Punctatisporites (6%); Dictyophllidites (3.7%); Raistrickia (3.6%); Lycopodiacidites (2.7%); Lophotriletes(2%); Concorisporites (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.

https://doi.org/10.11781/sysydz199004438