DOI: 10.1016/j.palaeo.2014.02.028
论文题名: Deep shelf biostrome of Late Permian in South China and its implications for the adaptability of calcisponges to water depth
作者: Meng Z. ; Wang Y. ; Woods A. ; Liao W. ; Li G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 401 起始页码: 132
结束页码: 141
语种: 英语
英文关键词: Biostrome
; Late Permian
; Paleoecology
; South China
; Sponge
英文摘要: The Yangtze platform of South China was an area of extensive carbonate accumulation during the Late Permian, with abundant benthic fossils and reef buildups. Its northern margin has long been considered to be bordered by deep shelf sediments rich in radiolarians and ammonoids. However, recent investigations found a sponge biostrome in deeper shelf settings in the uppermost Permian. The biostrome is about 0.45. m thick with an organic framework formed by autochthonous calcisponges. In contrast to more diverse shallow marine reef communities at this time, the biostrome was almost entirely constructed by the sponge genus Peronidella as the only frame-building organism. This low biodiversity reflects a relatively deep-water environment. Peronidella individuals in the biostrome are apparently larger than the same genus in shallow platform settings, including the diameters of both the sponge bodies and the central tubular spongocoel, as well as the thicknesses of the body walls. This increased size may be related to the low biodiversity and therefore to reduced competition, with sponge individuals having increased space in which to develop. Biostrome development was terminated by volcanic clay deposition. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69376
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, Hubei 430074, China; Department of Geological Sciences, California State University, Fullerton, CA 92834-6850, United States; Natural History Museum of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530012, China
Recommended Citation:
Meng Z.,Wang Y.,Woods A.,et al. Deep shelf biostrome of Late Permian in South China and its implications for the adaptability of calcisponges to water depth[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,401