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A nearshore-offshore trend in acritarch distribution from the early-middle ordovician of the Yangtze platfonn, south China
Li, Jun (李军); Servais, T; Yan, K (燕夔); Zhu, HC (朱怀诚)
2004-07-01
Source PublicationREVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN0034-6667
Volume130Issue:1-4Pages:141-161
Abstract

The stratigraphical interval of the late Early Ordovician Didymograptus deflexus and the early Middle Ordovician Azygograptus suecicus graptolite Biozones was investigated from seven sections from the upper Yangtze Platform, southern China. These are located on different parts of the platform, between the nearshore environments of the Kunming area, Yunnan Province, and the offshore carbonate shelf of the Yichang area, Hubei Province. The assemblages recovered from the different parts of the platform vary both in terms of diversity and composition. The nearshore environments show low diversity assemblages with about 10 acritarch species, whereas the offshore shelf environments reflect higher diversities with about 40 species. The composition of the assemblages also changes from simple morphologies (micrhystrids, leiosphaerids, fusiform acritarchs) in nearshore environments to specimens with longer and more complexly branched processes on the shelf. The polygonomorph acritarchs are common over all the upper Yantze Platform, while the acanthomorph genera Baltisphaeridium and Peteinosphaeridium are the most abundant taxa on the offshore carbonate shelf area. Phylogenetic or sea-level changes are probably not responsible for the compositional and diversity changes that occurred during the investigated interval. This study confirms previous interpretations that poorly diversified Palaeozoic acritarch assemblages occur in neritic environments and more complex, highly diversified assemblages are found on the shelf (C) 2004 Elsevier B.V. All rights reserved.

KeywordAcritarchs Microphytoplankton Palaeoecology Ordovician Yangtze Platform China
DOI10.1016/j.revpalbo.2003.12.005
Language英语
WOS KeywordProvince ; Microphytoplankton ; Section ; Arenig
WOS Research AreaPlant Sciences ; Paleontology
WOS SubjectPlant Sciences ; Paleontology
WOS IDWOS:000222435300008
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/979
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorZhu, HC (朱怀诚)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
2.USTL, CNRS, UMR 8014, Lab Paleontol & Paleogeog Paleozo LP3, F-59655 Villeneuve Dascq, France
3.USTL, CNRS, FR 1818, F-59655 Villeneuve Dascq, France
4.State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun ,Servais, T,Yan, K ,et al. A nearshore-offshore trend in acritarch distribution from the early-middle ordovician of the Yangtze platfonn, south China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2004,130(1-4):141-161.
APA Li, Jun ,Servais, T,Yan, K ,&Zhu, HC .(2004).A nearshore-offshore trend in acritarch distribution from the early-middle ordovician of the Yangtze platfonn, south China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,130(1-4),141-161.
MLA Li, Jun ,et al."A nearshore-offshore trend in acritarch distribution from the early-middle ordovician of the Yangtze platfonn, south China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 130.1-4(2004):141-161.
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