摘要
对采自燕山地区新元古界龙山组泥页岩进行化学浸解和筛析,获得大量微体化石,主要包括:Leiosphaeridia,Trachysphaeridium,Satka,Favososphaeridium,Tanarium,Siphonophycus,Oscillatoriopsis,Laminarites等。化石组合特征为:(1)以单球类-复球类化石分子为主,纹饰复杂;(2)小型具刺疑源类化石大量出现;(3)多细胞生物占有一定的数量。新的化石资料进一步丰富了龙山组微体化石的内容,也为区域地层对比提供了新的古生物依据。
On the basis of chemical soakin from the mudstones and shales of Neoproterozoic g and sieving analysis, a large number of microfossils were found Longshan Formaton in Yanshan region, comprising of Leiosphaerid- ia , Trachysphaeridium , Satka , Favososphaeridium , Tanarium , Siphonophycus , Oscillatoriopsis , Laminarites and so on. The fossil assemblage is characterized by： （1） dominance of monosphaeritae and polysphaeritae, with complex sculptures; （2） occurrence of a lot of small sized acanthophorous acritarchs; （3） existence of metaphytes. The new material enriches the microfossil assemblage of the Longshan Formaiton, and provides more evidence for region- al stratigraphic correlation.
出处
《世界地质》
CAS
2017年第1期1-14,共14页
World Geology
基金
国家自然科学基金项目(41302007
41272015)
中国地质调查局地质调查项目(1212011120142
12120115070501)联合资助
关键词
新元古界
龙山组
微体化石
燕山地区
具刺疑源类
Neoproterozoic
Longshan Formation
microfossil
Yanshan region
acanthophorous acritarch
