Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas

Detalhes bibliográficos
Autor(a) principal: Etchebehere, Mario Lincoln
Data de Publicação: 2004
Outros Autores: Saad, Antonio Roberto [UNESP], Fulfaro, Vicente José [UNESP], Perinotto, José Alexandre de Jesus [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5327/S1519-874X2004000200004
http://hdl.handle.net/11449/67894
Resumo: This paper presents the identification of tectonic deformation through the application of the stream-gradient index (slope x length) method in the Rio do Peixe hydrographic basin, located in western State of Sã o Paulo. The main principle used is that river valleys are the best tools for this type of analysis because of their fast adjustment to even the most gentle crustal deformations. This type of analysis for structural studies is extremely useful in the western region of the State of São Paulo, where deep chemical weathering results in a thick regolith and scarce outcrops. The stream length index is the ratio of the altimetric amplitude of each drainage and the natural logarithm of its length. The value obtained is plotted on maps at the median point of each drainage, allowing the drawings of lines with the same values (isodefs). Three anomalies (A, B and C) were identified along the Rio do Peixe valley representing uplift sectors indicated by the formation and distribution of Upper Quaternary deposits in terraces and modern fluvial plains and alluvial fans. In correlation with known tectonic data for this region it is possible to attribute the A and B anomalies to the Ribeirão Preto and Presidente Prudente crustal sutures, respectively. The smaller C anomaly needs further field investigation, but it could be associated with the Três Lagoas crustal suture. It must be emphasised that these sutures are inherited from the Precambrian Basement which had a strong influence on the Phanerozoic evolution in the whole sedimentary and volcanic stratigraphic pile of the Paraná Basin and on the dominant structural lineaments directions developed therein .The A, Band C anomalies are suggestive of renewed uplift as a result of neotectonic action in modern times.
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spelling Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicasApplication of the stream index method in the Rio do Peixe Basin (SP) in detecting neotectonic deformationFluvial morphometryHydraulic gradientNeotectonicsfluvial geomorphologylandscape evolutionneotectonicsstreamupliftBrazilSao Paulo [Brazil]South AmericaWestern HemisphereWorldThis paper presents the identification of tectonic deformation through the application of the stream-gradient index (slope x length) method in the Rio do Peixe hydrographic basin, located in western State of Sã o Paulo. The main principle used is that river valleys are the best tools for this type of analysis because of their fast adjustment to even the most gentle crustal deformations. This type of analysis for structural studies is extremely useful in the western region of the State of São Paulo, where deep chemical weathering results in a thick regolith and scarce outcrops. The stream length index is the ratio of the altimetric amplitude of each drainage and the natural logarithm of its length. The value obtained is plotted on maps at the median point of each drainage, allowing the drawings of lines with the same values (isodefs). Three anomalies (A, B and C) were identified along the Rio do Peixe valley representing uplift sectors indicated by the formation and distribution of Upper Quaternary deposits in terraces and modern fluvial plains and alluvial fans. In correlation with known tectonic data for this region it is possible to attribute the A and B anomalies to the Ribeirão Preto and Presidente Prudente crustal sutures, respectively. The smaller C anomaly needs further field investigation, but it could be associated with the Três Lagoas crustal suture. It must be emphasised that these sutures are inherited from the Precambrian Basement which had a strong influence on the Phanerozoic evolution in the whole sedimentary and volcanic stratigraphic pile of the Paraná Basin and on the dominant structural lineaments directions developed therein .The A, Band C anomalies are suggestive of renewed uplift as a result of neotectonic action in modern times.Centro de Pos-Graduacao Pesquisa e Extensão UnG, Praça Tereza Cristina 1, CEP 07023-070, GuarulhosDepartamento de Geologia Aplicada Inst. Geociencias/Ciencias Exatas UNESP, Rio ClaroDepartamento de Geologia Aplicada Inst. Geociencias/Ciencias Exatas UNESP, Rio ClaroUnGUniversidade Estadual Paulista (Unesp)Etchebehere, Mario LincolnSaad, Antonio Roberto [UNESP]Fulfaro, Vicente José [UNESP]Perinotto, José Alexandre de Jesus [UNESP]2014-05-27T11:21:10Z2014-05-27T11:21:10Z2004-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article43-56application/pdfhttp://dx.doi.org/10.5327/S1519-874X2004000200004Geologia USP - Serie Cientifica, v. 4, n. 2, p. 43-56, 2004.1519-874Xhttp://hdl.handle.net/11449/6789410.5327/S1519-874X2004000200004S1519-874X20040002000042-s2.0-108442449262-s2.0-10844244926.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporGeologia USP: Serie Cientificainfo:eu-repo/semantics/openAccess2024-01-15T06:24:37Zoai:repositorio.unesp.br:11449/67894Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:04:57.891553Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
Application of the stream index method in the Rio do Peixe Basin (SP) in detecting neotectonic deformation
title Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
spellingShingle Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
Etchebehere, Mario Lincoln
Fluvial morphometry
Hydraulic gradient
Neotectonics
fluvial geomorphology
landscape evolution
neotectonics
stream
uplift
Brazil
Sao Paulo [Brazil]
South America
Western Hemisphere
World
title_short Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
title_full Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
title_fullStr Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
title_full_unstemmed Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
title_sort Aplicação do Índice Relaçáo Declividade-Extensão - RDE Na Bacia do Rio do Peixe (SP) para Detecção de Deformações Neotectô nicas
author Etchebehere, Mario Lincoln
author_facet Etchebehere, Mario Lincoln
Saad, Antonio Roberto [UNESP]
Fulfaro, Vicente José [UNESP]
Perinotto, José Alexandre de Jesus [UNESP]
author_role author
author2 Saad, Antonio Roberto [UNESP]
Fulfaro, Vicente José [UNESP]
Perinotto, José Alexandre de Jesus [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv UnG
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Etchebehere, Mario Lincoln
Saad, Antonio Roberto [UNESP]
Fulfaro, Vicente José [UNESP]
Perinotto, José Alexandre de Jesus [UNESP]
dc.subject.por.fl_str_mv Fluvial morphometry
Hydraulic gradient
Neotectonics
fluvial geomorphology
landscape evolution
neotectonics
stream
uplift
Brazil
Sao Paulo [Brazil]
South America
Western Hemisphere
World
topic Fluvial morphometry
Hydraulic gradient
Neotectonics
fluvial geomorphology
landscape evolution
neotectonics
stream
uplift
Brazil
Sao Paulo [Brazil]
South America
Western Hemisphere
World
description This paper presents the identification of tectonic deformation through the application of the stream-gradient index (slope x length) method in the Rio do Peixe hydrographic basin, located in western State of Sã o Paulo. The main principle used is that river valleys are the best tools for this type of analysis because of their fast adjustment to even the most gentle crustal deformations. This type of analysis for structural studies is extremely useful in the western region of the State of São Paulo, where deep chemical weathering results in a thick regolith and scarce outcrops. The stream length index is the ratio of the altimetric amplitude of each drainage and the natural logarithm of its length. The value obtained is plotted on maps at the median point of each drainage, allowing the drawings of lines with the same values (isodefs). Three anomalies (A, B and C) were identified along the Rio do Peixe valley representing uplift sectors indicated by the formation and distribution of Upper Quaternary deposits in terraces and modern fluvial plains and alluvial fans. In correlation with known tectonic data for this region it is possible to attribute the A and B anomalies to the Ribeirão Preto and Presidente Prudente crustal sutures, respectively. The smaller C anomaly needs further field investigation, but it could be associated with the Três Lagoas crustal suture. It must be emphasised that these sutures are inherited from the Precambrian Basement which had a strong influence on the Phanerozoic evolution in the whole sedimentary and volcanic stratigraphic pile of the Paraná Basin and on the dominant structural lineaments directions developed therein .The A, Band C anomalies are suggestive of renewed uplift as a result of neotectonic action in modern times.
publishDate 2004
dc.date.none.fl_str_mv 2004-10-01
2014-05-27T11:21:10Z
2014-05-27T11:21:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.5327/S1519-874X2004000200004
Geologia USP - Serie Cientifica, v. 4, n. 2, p. 43-56, 2004.
1519-874X
http://hdl.handle.net/11449/67894
10.5327/S1519-874X2004000200004
S1519-874X2004000200004
2-s2.0-10844244926
2-s2.0-10844244926.pdf
url http://dx.doi.org/10.5327/S1519-874X2004000200004
http://hdl.handle.net/11449/67894
identifier_str_mv Geologia USP - Serie Cientifica, v. 4, n. 2, p. 43-56, 2004.
1519-874X
10.5327/S1519-874X2004000200004
S1519-874X2004000200004
2-s2.0-10844244926
2-s2.0-10844244926.pdf
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Geologia USP: Serie Cientifica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 43-56
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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