Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)

Detalhes bibliográficos
Autor(a) principal: Marques, Karina Patricia Prazeres
Data de Publicação: 2021
Tipo de documento: Tese
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: https://www.teses.usp.br/teses/disponiveis/11/11140/tde-13092021-092730/
Resumo: Latossols, also known as Oxisols and Ferralsols, occur in ancient landscapes in the intertropical zone. They are usually developed on more or less flat surfaces, and at different elevation levels, developed from different parent materials. Although these soils have been extensively studied, several issues remain poorly understood about their formation and evolution in ancient landscapes. Therefore, an area with predominance of Ferralsols, including ferruginous duricrusts, in the Central Plateau (Southwest of the Minas Gerais State, Brazil) was selected to investigate the formation and evolution of thick highly weathered soils, and their relationship with the landscape in which they occur. The contextualization and understanding of the controlling factors responsible for the landscape evolution were carried out (Chapter 2) and, based on this geomorphological understanding, the selection of sites for the study of pedons representative of Ferralsols on the two main identified landforms was carried out, one at the summit and the other at an intermediate level. Systematic sampling reaching several meters deep was carried and samples were collected from different horizons. Samples of the pisolitic horizon from a ferruginous duricrust underlying one of the pedons sampled on the upper and older surface were thoroughly investigated for their mineralogy. (U-Th)/He dating was carried out to constrain the formation and transformation of pisolitic structures, which provide clues to unveil the main weathering periods of the study area (Chapter 3). Samples of the non-indurated horizons were analysed regarding to their chemical composition and mineralogical characteristics, including crystallographic and thermal properties. The weathering conditions that prevailed during their formation were discussed considering the different forming factors (Chapter 4).
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spelling Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)Evolução da paisagem tropical e sua relação com paleosuperfícies, Latossolos e duricrusts ferruginosos na região do Alto Paranaíba (Planalto Central, Estado de Minas Gerais, Brasil)Clay mineralogyFerralitizaçãoFerralitizationGeocronologia de intemperismoGeomorfologia quantitativaMineralogia de argilasPaisagem reliquialPedogênesePedogenesisQuantitative geomorphologyRelict landscapeWeathering geochronologyLatossols, also known as Oxisols and Ferralsols, occur in ancient landscapes in the intertropical zone. They are usually developed on more or less flat surfaces, and at different elevation levels, developed from different parent materials. Although these soils have been extensively studied, several issues remain poorly understood about their formation and evolution in ancient landscapes. Therefore, an area with predominance of Ferralsols, including ferruginous duricrusts, in the Central Plateau (Southwest of the Minas Gerais State, Brazil) was selected to investigate the formation and evolution of thick highly weathered soils, and their relationship with the landscape in which they occur. The contextualization and understanding of the controlling factors responsible for the landscape evolution were carried out (Chapter 2) and, based on this geomorphological understanding, the selection of sites for the study of pedons representative of Ferralsols on the two main identified landforms was carried out, one at the summit and the other at an intermediate level. Systematic sampling reaching several meters deep was carried and samples were collected from different horizons. Samples of the pisolitic horizon from a ferruginous duricrust underlying one of the pedons sampled on the upper and older surface were thoroughly investigated for their mineralogy. (U-Th)/He dating was carried out to constrain the formation and transformation of pisolitic structures, which provide clues to unveil the main weathering periods of the study area (Chapter 3). Samples of the non-indurated horizons were analysed regarding to their chemical composition and mineralogical characteristics, including crystallographic and thermal properties. The weathering conditions that prevailed during their formation were discussed considering the different forming factors (Chapter 4).Os Latossolos, também denominados como <i.Oxisols e Ferralsols, ocorrem em paisagens antigas na zona intertropical. Eles são normalmente desenvolvidos em superfícies mais ou menos planas e em diferentes níveis de elevação, formados a partir de materiais de origem diversos. Apesar desses solos serem extensivamente estudados, várias questões permanecem pouco compreendidas sobre sua formação e evolução em paisagens tão antigas. Por isso, uma área com predominancia de Latossolos, incluindo duricrusts ferruginosos, no Planalto Central (Sudoeste do Estado de Minas Gerais, Brasil) foi selecionada para investigar a formação e evolução desses espessos solos intensamente intemperizados, e sua relação com a paisagem na qual ocorrem. A contextualização e compreensão dos fatores controladores responsáveis pela evolução da paisagem foi realizada (Capítulo 2) e, a partir desse entendimento geomorfológico, a seleção de locais para estudo de pedons representativos de Latossolos foi feita nas duas principais formas topográficas identificadas, sendo uma de cimeira e outra em nível intermediário. Amostragem sistemática alcançando vários metros de profundidade foi realizada e amostras foram coletadas em diferentes horizontes. Amostras do horizonte pisolítico de um duricrust ferruginoso subjacente a um dos pedons amostrados na superfície mais elevada e antiga foram detalhadamente investigadas quanto à sua mineralogia. Datação por (U-Th/He) foi realizada para restringir o tempo de formação e transformação de minerais secundários em estruturas pisolíticas, qual fornecem indícios para desvendar os principais períodos de intemperismo da área de estudo (Capítulo 3). Amostras dos horizontes não endurecidos foram analisadas em relação à sua composição química e características mineralógicas, incluindo propriedades cristalográficas e termais. As condições de intemperismo que prevaleceram durante sua formação foram discutidas considerando os diferentes fatores de formação (Capítulo 4).Biblioteca Digitais de Teses e Dissertações da USPTorrado, Pablo VidalMarques, Karina Patricia Prazeres2021-07-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/11/11140/tde-13092021-092730/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2021-09-14T17:34:02Zoai:teses.usp.br:tde-13092021-092730Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212021-09-14T17:34:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
Evolução da paisagem tropical e sua relação com paleosuperfícies, Latossolos e duricrusts ferruginosos na região do Alto Paranaíba (Planalto Central, Estado de Minas Gerais, Brasil)
title Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
spellingShingle Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
Marques, Karina Patricia Prazeres
Clay mineralogy
Ferralitização
Ferralitization
Geocronologia de intemperismo
Geomorfologia quantitativa
Mineralogia de argilas
Paisagem reliquial
Pedogênese
Pedogenesis
Quantitative geomorphology
Relict landscape
Weathering geochronology
title_short Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
title_full Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
title_fullStr Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
title_full_unstemmed Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
title_sort Tropical landscape evolution and its relationship with paleosurfaces, Ferralsols and ferruginous duricrusts in the Alto Paranaíba region (Central Plateau, Minas Gerais, Brazil)
author Marques, Karina Patricia Prazeres
author_facet Marques, Karina Patricia Prazeres
author_role author
dc.contributor.none.fl_str_mv Torrado, Pablo Vidal
dc.contributor.author.fl_str_mv Marques, Karina Patricia Prazeres
dc.subject.por.fl_str_mv Clay mineralogy
Ferralitização
Ferralitization
Geocronologia de intemperismo
Geomorfologia quantitativa
Mineralogia de argilas
Paisagem reliquial
Pedogênese
Pedogenesis
Quantitative geomorphology
Relict landscape
Weathering geochronology
topic Clay mineralogy
Ferralitização
Ferralitization
Geocronologia de intemperismo
Geomorfologia quantitativa
Mineralogia de argilas
Paisagem reliquial
Pedogênese
Pedogenesis
Quantitative geomorphology
Relict landscape
Weathering geochronology
description Latossols, also known as Oxisols and Ferralsols, occur in ancient landscapes in the intertropical zone. They are usually developed on more or less flat surfaces, and at different elevation levels, developed from different parent materials. Although these soils have been extensively studied, several issues remain poorly understood about their formation and evolution in ancient landscapes. Therefore, an area with predominance of Ferralsols, including ferruginous duricrusts, in the Central Plateau (Southwest of the Minas Gerais State, Brazil) was selected to investigate the formation and evolution of thick highly weathered soils, and their relationship with the landscape in which they occur. The contextualization and understanding of the controlling factors responsible for the landscape evolution were carried out (Chapter 2) and, based on this geomorphological understanding, the selection of sites for the study of pedons representative of Ferralsols on the two main identified landforms was carried out, one at the summit and the other at an intermediate level. Systematic sampling reaching several meters deep was carried and samples were collected from different horizons. Samples of the pisolitic horizon from a ferruginous duricrust underlying one of the pedons sampled on the upper and older surface were thoroughly investigated for their mineralogy. (U-Th)/He dating was carried out to constrain the formation and transformation of pisolitic structures, which provide clues to unveil the main weathering periods of the study area (Chapter 3). Samples of the non-indurated horizons were analysed regarding to their chemical composition and mineralogical characteristics, including crystallographic and thermal properties. The weathering conditions that prevailed during their formation were discussed considering the different forming factors (Chapter 4).
publishDate 2021
dc.date.none.fl_str_mv 2021-07-05
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
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dc.identifier.uri.fl_str_mv https://www.teses.usp.br/teses/disponiveis/11/11140/tde-13092021-092730/
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dc.language.iso.fl_str_mv eng
language eng
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dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
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instname:Universidade de São Paulo (USP)
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instname_str Universidade de São Paulo (USP)
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reponame_str Biblioteca Digital de Teses e Dissertações da USP
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repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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