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博文

目前显示的是标签为“Spongillites”的博文

Late Pleistocene Climatic Changes in Central Brazil Indicated by Freshwater Sponges

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48340#.VLzNBcnQrzE Author(s)    Vanessa de Souza Machado , Cecilia Volkmer-Ribeiro , Roberto Iannuzzi Affiliation(s) Programa de Pós-gradua??o em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brasil . Museu de Ciências Naturais (MCN), Funda??o Zoobotanica do Rio Grande do Sul (FZB), Porto Alegre, Brasil . Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, UFRGS, Porto Alegre, Brasil . ABSTRACT The Cemitério Palaeolake deposit in Catalao, Goiás State, Brazil, comprises a single, complete lacustrine sequence, dated from less than 27,500 ± 4000 yr B.P. to more than 51,780 ± 400 14 C yr B.P. The unprecedented presence of spongillite and diatomite layers in this deposit was investigated using spicules of continental sponges as proxy data for environmental and climate reconstruction, which w...