DOI: 10.1016/j.palaeo.2013.08.005
论文题名: Quantitative stratigraphy of the Wufeng and Lungmachi black shales and graptolite evolution during and after the Late Ordovician mass extinction
作者: Fan J. ; Chen Q. ; Melchin M.J. ; Sheets H.D. ; Chen Z. ; Zhang L. ; Hou X.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 389 起始页码: 96
结束页码: 114
语种: 英语
英文关键词: Graptolites
; Late Ordovician mass extinction
; Quantitative stratigraphy
; Rarefaction
; South China
英文摘要: Graptolite-bearing black shales are widely distributed on the Yangtze Platform in South China. Based on 19 sections systematically studied recently, we conducted a quantitative stratigraphic analysis of the graptolite biodiversity change during and after the Late Ordovician mass extinction. The combination of graphic correlation and rarefaction methods make it possible to evaluate the effect of sampling intensity on biodiversity estimates. Graptolite diversity reached its peak in the Dicellograptus complexus Chron, and then a gradual decline to the P. pacificus Chron. It was followed by a two-step mass extinction, the first and major phase occurred in the Metabolograptus extraordinarius Chron, and the second and minor phase in the latest M. persculptus Chron. The second phase of the extinction was mostly represented by the elimination of the Diplograptina survivors from the major extinction event, but did not show significant decline in standardized diversity curve. Thereafter, a moderate increase in richness appeared in the early and mid Parakidograptus acuminatus Chron, which was followd by a considerable decrease of graptolite richness in the late P. acuminatus Chron and early C. vesiculosus Chron. The present study also indicates slow and uneven sedimentation rates in the studied sections from mid-Katian to early Rhuddanian, including a relatively slower sedimentation rate during the Hirnantian Epoch. The latter, and the hiatus at the Honghuayuan and Guanwu sections, probably reflect the effects of the Hirnantian glaciation and regional tectonic movements. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69597
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China; Department of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G 2W5, Canada; Graduate University of Chinese Academy of Sciences, Beijing 100049, China; Department of Geology, University at Buffalo, SUNY, 411 Cooke Hall, Buffalo, NY 14260-4600, United States
Recommended Citation:
Fan J.,Chen Q.,Melchin M.J.,et al. Quantitative stratigraphy of the Wufeng and Lungmachi black shales and graptolite evolution during and after the Late Ordovician mass extinction[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,389