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Early Silurian (Telychian) bryozoan reefs in the epeiric sea of South China: Are heterotrophic metazoan buildups promoted by internal waves?
Li, Qijian (李启剑)1,2; Ernst, Andrej3; Munnecke, Axel4; Yu, Shenyang1,2; Li, Yue (李越)1,2
2018-11-15
Source PublicationSEDIMENTARY GEOLOGY
ISSN0037-0738
Volume376Pages:50-59
Abstract

After the mass extinction at the end of the Ordovician period, metazoan reefs recovered and became widespread on the Yangtze carbonate platform by the late Aeronian, as recorded by a diverse and complex reef system in the Shihniulan Formation. In the overlying siliciclastic-dominated Hanchiatien Formation, the reefs declined in size and biodiversity along with a sudden facies change during the lower Telychian. Without any phototrophic organisms, small reefs were primarily built by abundant bryozoans, which crop out in the lower part of this formation at the southern tip of Chongqing, Southwest China. These reefs occur as massive argillaceous limestones, varying in size from 1.6 to 2.8 m in thickness and 6 to 16 m in diameter. The reefs are surrounded by gray-green shales and silty shales. Distinct vertical ecozonation is present, and four growth stages have been recognized, represented by four facies types from bottom to top: (1) auloporid coral-echinoderm-bryozoan pacicstone/floatstone, (2) fenestrate bryozoan-echinoderm bafflestone, (3) Fistulipora-Asperopora framestone, and (4) Fistulipora framestone. In tropical mid- to outer-ramp settings, these bryozoan reefs showcase an unusual reef community in heterozoan carbonates, which were probably influenced by internal waves. (C) 2018 Elsevier B.V. All rights reserved.

KeywordFistuliporid Framework Fenestrate Bryozoans Auloporid Corals Ecological Succession Hanchiatien Formation
DOI10.1016/j.sedgeo.2018.07.008
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000449135400004
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/22514
Collection中国科学院南京地质古生物研究所
其他
Affiliation1.Nanjing Inst Geol & Paleontol, CAS Key Lab Econ Stratig & Palaeogeog, East Beijing Rd 39, Nanjing 210008, Jiangsu, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, East Beijing Rd 39, Nanjing 210008, Jiangsu, Peoples R China;
3.Univ Hamburg, Inst Geol, Bundesstr 55, D-20146 Hamburg, Germany;
4.Friedrich Alexander Univ Erlangen Nuremberg, GeoZentrum Nordbayern, D-91054 Erlangen, Germany
Recommended Citation
GB/T 7714
Li, Qijian ,Ernst, Andrej,Munnecke, Axel,et al. Early Silurian (Telychian) bryozoan reefs in the epeiric sea of South China: Are heterotrophic metazoan buildups promoted by internal waves?[J]. SEDIMENTARY GEOLOGY,2018,376:50-59.
APA Li, Qijian ,Ernst, Andrej,Munnecke, Axel,Yu, Shenyang,&Li, Yue .(2018).Early Silurian (Telychian) bryozoan reefs in the epeiric sea of South China: Are heterotrophic metazoan buildups promoted by internal waves?.SEDIMENTARY GEOLOGY,376,50-59.
MLA Li, Qijian ,et al."Early Silurian (Telychian) bryozoan reefs in the epeiric sea of South China: Are heterotrophic metazoan buildups promoted by internal waves?".SEDIMENTARY GEOLOGY 376(2018):50-59.
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