Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river

Detalhes bibliográficos
Autor(a) principal: Uagoda, Rogério
Data de Publicação: 2006
Outros Autores: Avelar, André de Souza, Coelho Netto, Ana Luiza
Tipo de documento: Artigo
Idioma: por
Título da fonte: Anuário do Instituto de Geociências (Online)
Texto Completo: https://revistas.ufrj.br/index.php/aigeo/article/view/6619
Resumo: Karstic features generally develop in carbonatic rocks, but can also occur in siliciclastic rocks, as quartzites. The present research aims to create superficial morphology mapping and reconnaissance of karstic area deposits in quartzitic rocks. The study was developed in the hydrographic basin of the Ribeirão Santana (210 km²), mid-valley of the Preto river, a tributary of the Paraíba do Sul river, located between the states of Rio de Janeiro and Minas Gerais, Brazil. Aerial photographs at 1:25.000 scale were reconstituted in 3D environments, resulting in a planimetric and altitudinal map at 1:10.000 scale. Closed depressions, concavities with and without channels and deposits, were detached from these maps. Precise field topographic surveys at 1:500 scale resulted in planimetric and altitudinal maps related to identified forms. Also, soil samples were collected in the valley basins and depressions and analyzed according to their color, texture and grain morphoscopy criteria. Such study resulted in soil profiles for deposits confined at the bottoms of depressions and schematic representations of sediments from valley bottoms and slopes. The results indicate that the closed depressions a generally positioned at the limit of the drainage. In all sampler from the slope and fluvial valley bottom deposits the sand fraction predominates over fine particles, which were probably carried away in solution. Similar to the literature description, deep organic and/or hydromorphic profiles were found in depressions confined deposits. The present data can contribute to future geologic, hydrologic and geochemical characteristics to interpretet the origin and development of karstic features
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spelling Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul riverDepressões fechadas em relevo cárstico-quartzítico, bacia do Ribeirão Santana, médio vale do rio Paraíba do SulKarstic features generally develop in carbonatic rocks, but can also occur in siliciclastic rocks, as quartzites. The present research aims to create superficial morphology mapping and reconnaissance of karstic area deposits in quartzitic rocks. The study was developed in the hydrographic basin of the Ribeirão Santana (210 km²), mid-valley of the Preto river, a tributary of the Paraíba do Sul river, located between the states of Rio de Janeiro and Minas Gerais, Brazil. Aerial photographs at 1:25.000 scale were reconstituted in 3D environments, resulting in a planimetric and altitudinal map at 1:10.000 scale. Closed depressions, concavities with and without channels and deposits, were detached from these maps. Precise field topographic surveys at 1:500 scale resulted in planimetric and altitudinal maps related to identified forms. Also, soil samples were collected in the valley basins and depressions and analyzed according to their color, texture and grain morphoscopy criteria. Such study resulted in soil profiles for deposits confined at the bottoms of depressions and schematic representations of sediments from valley bottoms and slopes. The results indicate that the closed depressions a generally positioned at the limit of the drainage. In all sampler from the slope and fluvial valley bottom deposits the sand fraction predominates over fine particles, which were probably carried away in solution. Similar to the literature description, deep organic and/or hydromorphic profiles were found in depressions confined deposits. The present data can contribute to future geologic, hydrologic and geochemical characteristics to interpretet the origin and development of karstic featuresFeições cársticas são geralmente desenvolvidas em rochas carbonáticas, mas também podem ocorrer em rochas silicláticas, como é o caso dos quartzitos. A presente pesquisa objetiva realizar mapeamento da morfologia superficial e reconhecimento de depósitos de área cárstica em rochas quartzíticas. O trabalho foi desenvolvido na bacia hidrográfica do Ribeirão Santana (210 km²), médio vale do rio Preto, que é tributário do rio Paraíba do Sul, localizando-se entre os estados do Rio de Janeiro e de Minas Gerais, Brasil. Foi realizada restituição de fotografias aéreas na escala 1:25.000 em ambiente 3D, donde resultou carta planialtimétrica em escala 1:10.000, com localização de depressões fechadas, concavidades com e sem canal e depósitos. Em campo foi executado levantamento topográfico de precisão, 1:500, resultando em mapeamentos planialtimétricos de formas já identificadas. Também foram feitas coletas de solo em fundos de vale, encostas e depressões, analisadas segundos os critérios de cor, textura e morfoscopia de grãos, resultando em perfis de solo, para depósitos confinados em fundos de depressões. Foram também geradas representações esquemáticas, para sedimentos de fundos de vale e encosta. Os resultados indicam que as depressões fechadas posicionam-se geralmente nos divisores de drenagem, havendo também casos em encostas. Quanto aos pacotes deposicionais, há predominância da fração areia em todas as amostras dos perfis de depósitos de encosta e fundos de vale fluviais, o que pode indicar que os finos são carreados em solução. Nos depósitos confinados em depressões são encontrados perfis orgânicos e/ou hidromórficos em profundidade, semelhante ao que é descrito em outros trabalhos sobre o tema. Os dados subsidiarão pesquisa futura que levará em conta características geológicas, hidrológicas e geoquímicas, a fim de interpretar a gênese e desenvolvimento das feições cársticas.Universidade Federal do Rio de Janeiro2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/661910.11137/2006_2_87-100Anuário do Instituto de Geociências; Vol 29, No 2 (2006); 87-100Anuário do Instituto de Geociências; Vol 29, No 2 (2006); 87-1001982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/6619/5216Copyright (c) 2006 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessUagoda, RogérioAvelar, André de SouzaCoelho Netto, Ana Luiza2022-10-17T14:41:25Zoai:www.revistas.ufrj.br:article/6619Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2022-10-17T14:41:25Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
Depressões fechadas em relevo cárstico-quartzítico, bacia do Ribeirão Santana, médio vale do rio Paraíba do Sul
title Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
spellingShingle Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
Uagoda, Rogério
title_short Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
title_full Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
title_fullStr Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
title_full_unstemmed Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
title_sort Closed depressions in karstic-quartzitic relief, Ribeirão Santana basin, mid-valley of the Paraíba do Sul river
author Uagoda, Rogério
author_facet Uagoda, Rogério
Avelar, André de Souza
Coelho Netto, Ana Luiza
author_role author
author2 Avelar, André de Souza
Coelho Netto, Ana Luiza
author2_role author
author
dc.contributor.author.fl_str_mv Uagoda, Rogério
Avelar, André de Souza
Coelho Netto, Ana Luiza
description Karstic features generally develop in carbonatic rocks, but can also occur in siliciclastic rocks, as quartzites. The present research aims to create superficial morphology mapping and reconnaissance of karstic area deposits in quartzitic rocks. The study was developed in the hydrographic basin of the Ribeirão Santana (210 km²), mid-valley of the Preto river, a tributary of the Paraíba do Sul river, located between the states of Rio de Janeiro and Minas Gerais, Brazil. Aerial photographs at 1:25.000 scale were reconstituted in 3D environments, resulting in a planimetric and altitudinal map at 1:10.000 scale. Closed depressions, concavities with and without channels and deposits, were detached from these maps. Precise field topographic surveys at 1:500 scale resulted in planimetric and altitudinal maps related to identified forms. Also, soil samples were collected in the valley basins and depressions and analyzed according to their color, texture and grain morphoscopy criteria. Such study resulted in soil profiles for deposits confined at the bottoms of depressions and schematic representations of sediments from valley bottoms and slopes. The results indicate that the closed depressions a generally positioned at the limit of the drainage. In all sampler from the slope and fluvial valley bottom deposits the sand fraction predominates over fine particles, which were probably carried away in solution. Similar to the literature description, deep organic and/or hydromorphic profiles were found in depressions confined deposits. The present data can contribute to future geologic, hydrologic and geochemical characteristics to interpretet the origin and development of karstic features
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
dc.type.none.fl_str_mv

dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6619
10.11137/2006_2_87-100
url https://revistas.ufrj.br/index.php/aigeo/article/view/6619
identifier_str_mv 10.11137/2006_2_87-100
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6619/5216
dc.rights.driver.fl_str_mv Copyright (c) 2006 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2006 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv Anuário do Instituto de Geociências; Vol 29, No 2 (2006); 87-100
Anuário do Instituto de Geociências; Vol 29, No 2 (2006); 87-100
1982-3908
0101-9759
reponame:Anuário do Instituto de Geociências (Online)
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reponame_str Anuário do Instituto de Geociências (Online)
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