Geoformas deposicionais e sedimentos de fundo na foz da baía Salobra confluência com o rio Paraguai Pantanal de Cáceres - Mato Grosso (Depositional geoforms and bottom sediments in outfall of the Salobra bay confluency with Paraguay River Pantanal of ...)
DOI:
https://doi.org/10.26848/rbgf.v6.2.p253-270Keywords:
Pantanal de Cáceres, Baía Salobra, Feições deposicionaisAbstract
A baía Salobra encontra-se no baixo curso do córrego Piraputanga, Pantanal de Cáceres – Mato Grosso, Brasil. Possui aproximadamente 629 m de extensão, está localizada entre as coordenadas geográficas 15º 58’ 64” a 15º 58.35’ 49” latitude sul e 57º 41’ 08.44” a 57º 40’ 50.29” longitude oeste. O objetivo deste trabalho foi identificar as geoformas deposicionais, bem como verificar e quantificar os sedimentos de fundo transportados na foz da baía Salobra confluência com o rio Paraguai em Cáceres – Mato Grosso. Os procedimentos adotados foram: revisão da literatura, caracterização ambiental, observação e monitoramento da área, coleta e análise de sedimentos de fundo. Para análise dos sedimentos foram utilizados os métodos de peneiramento e pipetagem. O primeiro segmento apresentou a deposição com barra lateral e maior concentração de areia. O segundo segmento registrou-se barra central. E no terceiro segmento apresentou barra lateral com predominância da areia.
A B S T R A C T
The Salobra bay is in the lower course of the Piraputanga stream, Pantanal of Cáceres, Mato Grosso, Brazil. It has approximately 629 m long, is located between the geographical coordinates 15º 58’ 64” to 15º 58.35’ 49” south latitude and 57º 41’ 08.44” to 57º 40’ 50.29” west longitude. The aim of this study was to identify the depositional landforms, as well as verify and quantify the bottom sediments transported in the mouth of the Salobra bay confluence with Paraguay River. The procedures used were: literature review, environmental characterization, observation and monitoring of the area, collection and analysis of depth sediments. For analysis of sediments were used methods of sieving and pipetting. The first segment presented the deposition with sidebar and higher sand concentration. The second segment registered a central bar. And the third segment shows sidebar predominantly sand.
Key words: Pantanal de Cáceres; Salobra bay; depositional features; textural analysis.
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Copyright (c) 2013 Leila Nalis Paiva da Silva Andrade, Gustavo Roberto dos Santos Leandro, Célia Alves de Souza
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