Lowermost Cambrian acritarchs from the Yanjiahe Formation, South China: implication for defining the base of the Cambrian in the Yangtze Platform

doi:10.1017/S0016756816001369

	Lowermost Cambrian acritarchs from the Yanjiahe Formation, South China: implication for defining the base of the Cambrian in the Yangtze Platform
	SOO YEUN AHN; Maoyan Zhu (朱茂炎)
	2017
发表期刊	Geological Magazine
ISSN	0016-7568
卷号	154 期号:6 页码:1217-1231
摘要	The Asteridium-Heliosphaeridium-Comasphaeridium (AHC) acritarch assemblage is composed of common organic-walled microfossils in the basal Cambrian chert-phosphorite units in South China, indicating that the AHC assemblage can be a useful biostratigraphic tool for the Ediacaran-Cambrian boundary successions in the Yangtze Platform. To test the validity of the AHC acritarch assemblage as a biostratigraphic tool, the stratigraphic range of the AHC acritarch assemblage was confirmed, and its spatial and temporal relationships to other bio- and chemostratigraphic tools were analysed in the Yanjiahe Formation, Yangtze Gorges area, South China. The result shows that the AHC assemblage temporally correlates to the Anabarites trisulcatus-Protohertzina anabarica Assemblage Zone, and spatially correlates to the large negative carbon isotope anomaly of the lowermost Cambrian (BACE) in the Yanjiahe Formation. This implies that the radiation of phytoplankton occurred slightly before the radiation of the small shelly fossils, and the AHC acritarch assemblage can be another important chronological reference to the lowermost Cambrian successions in South China, and potentially to global correlations.
关键词	AHC acritarchs biostratigraphy Cambrian South China
DOI	10.1017/S0016756816001369
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000413978800004
出版者	CAMBRIDGE UNIV PRESS
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/14081
专题	中国科学院南京地质古生物研究所其他
通讯作者	SOO YEUN AHN
推荐引用方式 GB/T 7714	SOO YEUN AHN,Maoyan Zhu . Lowermost Cambrian acritarchs from the Yanjiahe Formation, South China: implication for defining the base of the Cambrian in the Yangtze Platform[J]. Geological Magazine,2017,154(6):1217-1231.
APA	SOO YEUN AHN,&Maoyan Zhu .(2017).Lowermost Cambrian acritarchs from the Yanjiahe Formation, South China: implication for defining the base of the Cambrian in the Yangtze Platform.Geological Magazine,154(6),1217-1231.
MLA	SOO YEUN AHN,et al."Lowermost Cambrian acritarchs from the Yanjiahe Formation, South China: implication for defining the base of the Cambrian in the Yangtze Platform".Geological Magazine 154.6(2017):1217-1231.