The Discovery of Large-Scale Acanthomorphic Acritarch Assemblage on the Southern Margin of North China Old Land and an Analysis of Its Paleogeographic Environment

详细信息   

• 责任者：Gao Wei (China Aero Geophysical Survey & Remote Sensing Center ; Ministry of Land and Resources ; Beijing 100083 ; China) ; Zhang Chuanheng
• 刊名：Geology in China
• 出版年：2011
• 卷期：38(5)
• 关键词：疑源类 ; acritarchs ; 古地理 ; paleogeography ; 新元古代 ; Neoproterozoic Era ; 华北板块 ; North China Plate
• 页码：p.1232-1243
• 图表：3 illus., 2 plates, 1 table, 44 refs.
• 分类号：1100
• 出版序号：1862
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

摘要

Numerous large-scale acanthomorpic acritarchs have been found in Neoproterozoic Ruyang Group on the southern margin of North China old land. They are acritarchs with double layers, complex ornaments on the outer layer, dense hollow or nets on the inner layer and nucleus in the cell. According to a biostratigraphic analysis, the Neoproterozoic strata with large-scale acanthomorpic acritarchs will fill up the gap of the Jixian section. This paper deals with the appearance of the acritarchs, stratigraphic correlation, and the possible tectonic implication of the acritarchs in the light of biostratigraphy, geochemistry and lithology.