Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Parolin, Mauro

doi:10.4072/rbp.2008.3.05

Cited by 35 publications

(34 citation statements)

References 27 publications

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“…Almeida et al (2009), after taxonomic and taphonomic analysis of the spicules of continental sponges in spongolite deposits in the region of João Pinheiro, northwest of Minas Gerais, Brazil, pointed to alternating periods of wet and cold weather and drier climate, with torrential rainfall between the Upper Pleistocene and Holocene in this region. Parolin et al (2008), after the identification of sponge spicules typical of distinct environments and using a vibro-core sample in sediments at Samambaia Lake, Taquarussu, Mato Grosso do Sul, Brazil, characterized the alternation of lentic and lotic phases from the late Pleistocene to middle Holocene. At that time, the term "spongofacies" was proposed and defined for facies with a predominance of sponge spicules that, when identified, indicate specific paleoenvironmental characteristics.…”

Section: Introductionmentioning

confidence: 99%

Inventary of the Sponge Fauna of the cemitério Paleolake, Catalão, Goiás, Brazil

Machado

Volkmer‐Ribeiro

Iannuzzi

2012

An. Acad. Bras. Ciênc.

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The Cemitério Paleolake, Catalão, Goiás, is a lacustrine deposit that is rich in spicules of continental sponges. These spicules, which are present in three sections (1-3), were analyzed for the taxonomic identification of the species in order to reconstruct the late Quaternary palaeoenvironment. An indigenous assemblage of lentic sponges was found, consisting of Metania spinata (Carter 1881), Dosilia pydanieli Volkmer-Ribeiro (1992), Radiospongilla amazonensis Volkmer- Ribeiro and Maciel (1983), Trochospongilla variabilis Bonetto and Ezcurra de Drago (1973), Corvomeyenia thumi (Traxler 1895), Heterorotula fistula VolkmerRibeiro and Motta (1995), plus Corvoheteromeyenia australis (Bonetto and Ezcurra de Drago 1966), which here has its first record in an assemblage formed by biosiliceous deposits. Furthermore, at the base of the sections, spicules of sponges from lotic environments were detected, including Corvospongilla seckti Bonetto and Ezcurra de Drago (1966), Oncosclera navicella (Carter 1881) and Eunapius fragilis (Leidy 1851), which suggests a contribution from flowing water. We identified 25 spongofacies horizons caused by sponge assemblages typical of a lentic environment, dated from at least 39,700 years BP., and currently occurring in lakes typical of the Cerrado Biome.

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Section: Introductionmentioning

confidence: 99%

Inventary of the Sponge Fauna of the cemitério Paleolake, Catalão, Goiás, Brazil

Machado

Volkmer‐Ribeiro

Iannuzzi

2012

An. Acad. Bras. Ciênc.

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“…A análise destes elementos pode ser considerada vantajosa quando comparada aos palinomorfos, tradicionalmente mais utilizados em pesquisas paleoambientais, já que a matéria orgânica é mais susceptível aos processos de oxidação e remobilização (Parolin et al, 2008). Além desta vantagem, estes autores salientam que por sua composição silicosa as espículas de esponjas podem ser preservadas em sedimentos mais grossos, como a areia.…”

Section: Introductionunclassified

Análise de espículas de esponjas como indicadores paleoambientais em sedimentos lacustres no oeste da Bahia

Santos

Castro²,

Parolin

et al. 2017

Rev. bras. paleontol.

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-ANALYSIS OF SPONGE SPICULES AS PALEOENVIRONMENTAL INDICATORS IN WESTERN BAHIA LACUSTRINE SEDIMENTS.The use of sponge spicules in sediments as proxy data has been successful in paleoenvironmental reconstructions. We recovered two sedimentary cores in two ponds located in San Francisco lowland in Western Bahia to understand the paleoclimatic and the lacustrine system dynamics. Sedimentary facies and granulometric analysis were perfomed. Also, organic matter content and presence of diatoms frustules were studied, besides the identification and quantification of sponge spicules detected in sediments, which were dated by 14 C. The sediment age ranged between 8410 to 3929 yrs cal BP, corresponding to the Holocene. Sponge spicules of the following species were found: Dosilia pydanieli, Heterorotula fistula, Metania spinata, Oncoslera sp., Radiospongilla inesi and Tubella variabilis. Analysis of the results suggest that the two lakes have a standardized climate pattern alternating between drier and wetter climates in relation to the current climate condition. However, the two lakes differ regarding the sedimentation rate and the microfossil content the pond of the northern portion showed lentic and lotic alternated phases, indicating a paleodrainage at the beginning of the upper Holocene, while the evidences in the southern pond of the lake system there are only lentic phases. Such evidences suggest that other physiographic factors and climate influenced the dynamics of these lakes, such as structure, litholog and tectonics of the ponds substrates.Key words: Quaternary, Holocene, San Francisco lowland, sponges.RESUMO -A utilização de espículas de esponjas em sedimentos como dado proxy vem obtendo sucesso em proposições de reconstruções paleoambientais. Para compreender as condições paleoclimáticas e dinâmicas do sistema lacustre, localizado na Depressão do São Francisco, no oeste do estado da Bahia, foram recuperados dois testemunhos em duas lagoas. Foram realizadas análises de fácies, ensaios granulométricos, de conteúdo de matéria orgânica e presença de diatomáceas, além da identificação e quantificação de espículas de esponjas detectadas nos sedimentos holocênicos, que foram datados por 14 C. A idade das amostras dos sedimentos variou entre 8.410 a 3.929 cal. AP. Foram encontradas espículas das esponjas Dosilia pydanieli, Heterorotula fistula, Metania spinata, Oncoslera sp, Radiospongilla inesi e Tubella variabilis. As análises sugerem que as duas lagoas tiveram situações climáticas com alternância entre fases mais secas e mais úmidas em relação ao clima atual. No entanto, as duas lagoas diferem no que tange à taxa de sedimentação e conteúdo microfossilífero. Para a lagoa da porção norte os resultados evidenciaram alternância de fases lênticas e lóticas, indicando uma paleodrenagem no início do Holoceno superior, enquanto as evidências da lagoa ao sul do sistema lacustre indicam apenas fases lênticas. Tais evidências sugerem que outros fatores fisiográficos, além do clima, influenciaram a dinâmica dessas la...

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“…In this respect several studies have been conducted in South America (Turcq et al, 1998;Sifeddine et al, 2001;Cordeiro et al, 2008;Volkmer-Ribeiro et al, 2007;Parolin et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Investigation of freshwater sponges spicules deposits in a karstic lake in Brazil

2016

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The environmental conditions which contributed to the formation of the notorious quaternary deposits of freshwater sponge spicules in karstic lentic environments in Brazil have been subject of some speculation. No investigation has yet been conducted to test whether these deposits currently originate in karstic lakes. To provide for such an investigation, Serra Negra Lake, which is formed on an ultramafic-alkaline-carbonatite dome at central western Brazil, close to the area of occurrence of the paleo-deposits was selected for the study. Bottom sediments were sampled at 10 stations across the lake, and water was sampled at five of the stations, in June/2011 (rainy season) and October/2011 (dry season). Analysis of granulometry, organic matter and presence of spicules were carried out in the sediments. Lake water was analysed for the main physical and chemical characteristics. Deposit of spicules was restricted to the northern area of the lake, which is rich in macrophyte. The taxonomic analysis of the spicules indicated the contribution of five sponge species, Dosilia pydanieli, Metania spinata, Radiospongilla amazonensis, Trochospongilla variabilis and Heterorotula fistula, which formed large deposits in neighbouring areas. The high silica concentration, derived from the dome volcanic rocks, constant water level and available substrate are credited for the continuous production of sponges and spicules, confirmed by the rare presence of gemmoscleres. The lake is classed as a minerotrophic fen type of bog with a heavy contribution from the surrounding creeks. Lake sediments are fine with high levels of organic matter and peat, which contributed to the trapping of spicules in the sediments.Keywords: continental sponges spicules, bottom sediments, bogs, Cerrado Biome. Investigação de depósito de espículas de esponjas de água doce em um lago cárstico no Brasil ResumoAs condições ambientais que contribuíram para a formação de notórios depósitos quaternários de espículas de esponjas de água doce em ambientes cársticos no Brasil têm sido objeto de algumas especulações. Nenhuma investigação foi ainda realizada para testar se esses depósitos originam-se atualmente em lagos cársticos. Para prover tal investigação, a Lagoa Serra Negra, formada em um domo ultramáfico-alcalino-carbonatítico, no centro oeste do Brasil, próximo à área de ocorrência dos referidos paleo-depósitos, foi selecionada para o estudo. Sedimentos de fundo foram amostrados em 10 estações ao longo do lago, e a água foi coletada em cinco das estações, em junho/2011 (estação chuvosa) e outubro/2011 (estação seca). Análises de granulometria, matéria orgânica e presença de espículas foram realizadas nos sedimentos. A água do lago foi analisada para as principais características físicas e químicas. O depósito de espículas foi restrito à área norte do lago, que é rico em macrófitas. A análise taxonômica das espículas indicou a contribuição de cinco espécies de esponjas, Dosilia pydanieli, Metania spinata, Radiospongilla amazonensis, Trochospongilla vari...

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Use of spongofacies as a proxy for river-lake paleohydrology in Quaternary deposits of central-western Brazil

Cited by 35 publications

References 27 publications

Inventary of the Sponge Fauna of the cemitério Paleolake, Catalão, Goiás, Brazil

Inventary of the Sponge Fauna of the cemitério Paleolake, Catalão, Goiás, Brazil

Análise de espículas de esponjas como indicadores paleoambientais em sedimentos lacustres no oeste da Bahia

Investigation of freshwater sponges spicules deposits in a karstic lake in Brazil

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