globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.10.047
论文题名:
The Late Devonian Frasnian-Famennian Event in South China - Patterns and causes of extinctions, sea level changes, and isotope variations
作者: Ma X.; Gong Y.; Chen D.; Racki G.; Chen X.; Liao W.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 448
起始页码: 224
结束页码: 244
语种: 英语
英文关键词: Biotic crisis ; Diversity change ; Kellwasser events ; Mass extinction ; South China ; Upper Devonian
英文摘要: The Frasnian-Famennian (F-F) event may be recognized in various facies areas in South China. In the pelagic cherty basin facies, both Lower and Upper Kellwasser events can seemingly be recognized. In the deeper water carbonate facies, the F-F event level is well controlled in light of conodont biostratigraphy. In the shallow water carbonate and mixed carbonate-shale facies, the F-F boundary may be defined by clear taxonomic distinction in benthic fossils (articulate brachiopods and corals) as well as evidence from minor pelagic fossils. Post-extinction recovery rate of benthic organisms differs in different facies settings and different taxonomic groups. In open shallow water platform to inter-platform depression areas, brachiopods seem to recover quickly, probably in the Middle Pa. triangularis Zone; benthic ostracodes seem to recover at a later stage; recovery of rugose corals did not happen until the uppermost Famennian. Three steps of the F-F mass extinction are postulated: 1) extinction of diverse brachiopods (including most atrypids); 2) extinction of pelagic conodonts; 3) extinction of both benthic faunas (very abundant and diverse rugose corals and ostracodes) and pelagic conodonts. Evidence of an end-Frasnian regression in South China is clear, particularly in shallow water settings. However, in deeper water settings, the picture is complicated, with evidence of both sea level rise and fall in the latest Frasnian. It may be assumed from overall data so far known that crustal evolution itself and associated multiple volcanic/hydrothermal activities may have mainly caused frequent and rapid climatically warming-cooling alterations and sea level changes as well as marine ecologic collapse (eutrophication, microbial blooming, seawater acidification, and anoxia), which may explain the F-F extinction pattern in South China. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68529
Appears in Collections:过去全球变化的重建

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作者单位: Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing, China; State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, China; Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, #19 Beitucheng Xilu, Chaoyang District, Beijing, China; Faculty of Earth Sciences, University of Silesia, Bedzinska Str. 60, Sosnowiec, Poland; Nanjing Institute of Geology and Paleontology, Chinese Academy of Science, 39 East Beijing Road, Nanjing, China

Recommended Citation:
Ma X.,Gong Y.,Chen D.,et al. The Late Devonian Frasnian-Famennian Event in South China - Patterns and causes of extinctions, sea level changes, and isotope variations[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,448
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