摘要
作者于1985年实地考察了朝鲜民主主义人民共和国惠山地区和平壤以南地区元古代晚期和早寒武世沉积岩层,并获得了一些微体植物化石。尽管当前获得的化石材料不甚丰富,但为讨论朝鲜半岛北部前寒武纪岩层的地质时代以及与我国相当岩层的对比,提供了有意义的资料。在朝鲜考察期间,我们得到朝鲜平城地质研究所的李明哲、吴在根等的热情接待和大力协助,在此致以衷心的感谢;同时,作者对我所唐天福、曹瑞骥、薛耀松给予的热情帮助,以及王兰、曹德辉、臧晓泉等在化石标本处理及绘图工作中的协助,一并致以谢忱!
In April of 1985, the author made an investigation into the Upper Proterozoic sedimentary sequences located in the south district of Pyongyang and the Huishan area in the Democratic People's Republic of Korea. No well-preserved acritarchs have been obtained by means of common palynolo gical technique from the slates of the Late Proterozoic Mochuan Formation in the Mochuan Group, and the conglomerate-bearing phyllites of the Feilangdong Formation in the Juxian Group. The acritarchs from both the Mochuan Formation and the Feilangdong Formation are considered as correlatable with those from the Cuijiatun Formation in E. Liaoning of Northeast China and the Nantuo Formation in South China respectively. Furthermore, the tubular microfossils Eomycetopsis robusta and Siphonophycus kestron are found from the glacial conglomerates of siliceous dolomite in the Feilangdong Formation, indicating that the glacial conglomerates were carried from the underlying strata containing stromatolites, i.e., the Citangyu Group, while similar microfossils also have been reported from the Ganjingzi Formation of the Liaonan Group in E. Liaoning of Northeast China. It is noticeable that the Feilangdong Formation characterized by glacial sediments in Korea is of about the same age (750—700 Ma) as the Nantuo Formation in China. Thus it can be concluded that the Liaonan Group in E. Liaoning, NE China, should be older than the Nantuo Formation in South China.
出处
《古生物学报》
CAS
CSCD
北大核心
1990年第4期460-466,525-527,共7页
Acta Palaeontologica Sinica
