Produção Nacional
Revisado por pares
Origin and impact of the oldest metazoan bioclastic sediments
2013; Geological Society of America; Volume: 41; Issue: 4 Linguagem: Inglês
10.1130/g33931.1
ISSN1943-2682
AutoresLucas V. Warren, Marcello Guimarães Simões, Thomas R. Fairchild, Cláudio Riccomini, Claudio Gaucher, Luiz Eduardo Anelli, Bernardo Tavares Freitas, Paulo César Boggiani, Fernanda Quaglio,
Tópico(s)Marine Biology and Ecology Research
ResumoResearch Article| April 01, 2013 Origin and impact of the oldest metazoan bioclastic sediments L.V. Warren; L.V. Warren * 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil *E-mail: warren@usp.br. Search for other works by this author on: GSW Google Scholar M.G. Simões; M.G. Simões 2Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Rubião Júnior, Botucatu 18618-000, Brazil Search for other works by this author on: GSW Google Scholar T.R. Fairchild; T.R. Fairchild 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar C. Riccomini; C. Riccomini 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar C. Gaucher; C. Gaucher 3Departamento de Geología, Facultad de Ciencias, Calle Iguá 4225, Montevideo 11400, Uruguay Search for other works by this author on: GSW Google Scholar L.E. Anelli; L.E. Anelli 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar B.T. Freitas; B.T. Freitas 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar P.C. Boggiani; P.C. Boggiani 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar F. Quaglio F. Quaglio 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information L.V. Warren * 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil M.G. Simões 2Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Rubião Júnior, Botucatu 18618-000, Brazil T.R. Fairchild 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil C. Riccomini 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil C. Gaucher 3Departamento de Geología, Facultad de Ciencias, Calle Iguá 4225, Montevideo 11400, Uruguay L.E. Anelli 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil B.T. Freitas 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil P.C. Boggiani 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil F. Quaglio 1Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago, 562, São Paulo 05508-080, Brazil *E-mail: warren@usp.br. Publisher: Geological Society of America Received: 07 Aug 2012 Revision Received: 14 Nov 2012 Accepted: 14 Nov 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (4): 507–510. https://doi.org/10.1130/G33931.1 Article history Received: 07 Aug 2012 Revision Received: 14 Nov 2012 Accepted: 14 Nov 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation L.V. Warren, M.G. Simões, T.R. Fairchild, C. Riccomini, C. Gaucher, L.E. Anelli, B.T. Freitas, P.C. Boggiani, F. Quaglio; Origin and impact of the oldest metazoan bioclastic sediments. Geology 2013;; 41 (4): 507–510. doi: https://doi.org/10.1130/G33931.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The emergence of soft-bodied metazoans and the radiation of the earliest skeletal organisms substantially changed the ecological dynamics of Ediacaran environments, leading to the genesis of biogenic hard-part deposits for the first time in Earth's history. The impact of bioclast origin on sedimentary processes is analyzed herein, focusing on the sedimentology and taphonomy of shell concentrations dominated by the Ediacaran index fossil Cloudina from the Itapucumí Group, Paraguay. Skeletal concentrations include both dense accumulations of parautochthonous, disarticulated specimens ("Type 1 deposits") and in situ specimens preserved as loosely packed assemblages ("Type 2 deposits"). At that time, Cloudina was the critical source of durable biomineralized hard parts in an environment nearly free of other bioclasts. The simple fabric and geometry of these accumulations are typical of Cambrian-style shell beds. Despite their Precambrian age, these deposits indicate that the establishment of the Phanerozoic style of marine substrates and preservation in early shell beds was determined more by the acquisition of hard parts than by environmental changes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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