DOI: 10.1016/j.palaeo.2015.02.021
论文题名: Paleoecology and sedimentary environment of the Late Devonian coral biostrome from the Central Devonian Field, Russia
作者: Zatoń M. ; Borszcz T. ; Berkowski B. ; Rakociński M. ; Zapalski M.K. ; Zhuravlev A.V.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 424 起始页码: 61
结束页码: 75
语种: 英语
英文关键词: Corals
; Encrusters
; Frasnian-Famennian event
; Late Devonian
; Paleoecology
英文摘要: The upper Frasnian coral biostrome, well-exposed in the Russkiy Brod quarry, Central Devonian Field, Russia, has been studied in detail with respect to paleoecology and sedimentary environment. The biostrome, formed by auloporid tabulates and solitary and colonial rugose corals, originated in an offshore environment characterized by calmer periods with slow or halted sedimentation, and more energetic periods when sedimentation rate increased. The episodic, higher sediment influx and stronger hydrodynamic regime are not only well-expressed in the microfacies, but also in the variability of colony integration of the rugose corals observed even within single coralla. Distinct development of constrictions, rejuvenescences and deflection of growth directions in rugose corallites may also indicate unstable sedimentary conditions. The latter features, however, may have, in part, also resulted from syn vivo biotic interaction with the associated auloporids. Both the facies and paleontological observations suggest that the biostrome originated by the colonization of deposited bioclasts by pioneering auloporids, creating the framework for settlement of later generations of auloporids and rugose corals. Apart from abundant auloporids representing a single species and associated rugose corals, the other encrusters are not numerous and poorly diversified, represented by dominating foraminifers, followed by single species of productid brachiopods, stromatoporoids, microconchids and cornulitids. The coral-associated macrobenthos has similarly a low diversity, being represented by single species of spiriferid and rhynchonellid brachiopods, and gastropods. Being developed in an offshore carbonate sedimentary system devoid of any organic-rich deposits, and characterized by extremely low abundance and diversity of suspension-feeding organisms, the biostrome is considered to have originated in a low productivity, oligotrophic environment strictly dominated by heterozoan coral communities. Its development in a well-oxygenated, oligotrophic environment during the time when organic-rich, black Kellwasser facies developed elsewhere, additionally attests for multi-causal scenarios for the Frasnian-Famennian event, during which other factors were responsible in different paleogeographic and facies settings. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68992
Appears in Collections: 过去全球变化的重建
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作者单位: Faculty of Earth Sciences, University of Silesia, Bdzińska 60, Sosnowiec, Poland; Marine Ecology Department, Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, Sopot, Poland; Institute of Geology, Adam Mickiewicz University, Maków Polnych 16, Poznań, Poland; Faculty of Geology, University of Warsaw, Wirki i Wigury 93, Warszawa, Poland; POLARGEO Inc., 3-7 24th-Line, St. Petersburg, Russian Federation
Recommended Citation:
Zatoń M.,Borszcz T.,Berkowski B.,et al. Paleoecology and sedimentary environment of the Late Devonian coral biostrome from the Central Devonian Field, Russia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,424