Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil

Detalhes bibliográficos
Autor(a) principal: de Godoi Pinton, Leandro
Data de Publicação: 2022
Outros Autores: Lupinacci, Cenira Maria [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1002/jqs.3395
http://hdl.handle.net/11449/222853
Resumo: The classic models of cuesta evolution in south-eastern Brazil have temporal gaps in their denudation chronology. Here, we analyzed the colluvial deposits located on the rim of the Serra Geral escarpments in the Paraná Basin to propose a model with an absolute age range of minor landform evolution within this cuesta morphology. Correlation of the optically stimulated luminescence ages with the regional paleoclimatic conditions demonstrates that the successive phases of colluviation reflect either short-term intervals of variability in moisture availability or dry periods in the Holocene. The potential effects of other contributing factors (vegetation changes, local geomorphic settings and human activity) add complexity to the denudation responsible for the development of the investigated geomorphic chronosequences. The proposed model consists of five stages of hillslope sediment remobilization that were responsible for further remodeling of the minor vertical steps during the following chronological distribution: (i) 9.13 ± 1.2–7.09 ± 0.96 ka; (ii) 5.66 ± 0.86–4.5 ± 0.75 ka; (iii) 3.94 ± 0.605–3.45 ± 0.6 ka; (iv) 2.66 ± 0.315–2.3 ± 0.4 ka; and (v) after 1960 to the present day.
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spelling Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazilcolluviumcuesta landscapeoptically stimulated luminescence (OSL)paleoclimateQuaternary geomorphologyThe classic models of cuesta evolution in south-eastern Brazil have temporal gaps in their denudation chronology. Here, we analyzed the colluvial deposits located on the rim of the Serra Geral escarpments in the Paraná Basin to propose a model with an absolute age range of minor landform evolution within this cuesta morphology. Correlation of the optically stimulated luminescence ages with the regional paleoclimatic conditions demonstrates that the successive phases of colluviation reflect either short-term intervals of variability in moisture availability or dry periods in the Holocene. The potential effects of other contributing factors (vegetation changes, local geomorphic settings and human activity) add complexity to the denudation responsible for the development of the investigated geomorphic chronosequences. The proposed model consists of five stages of hillslope sediment remobilization that were responsible for further remodeling of the minor vertical steps during the following chronological distribution: (i) 9.13 ± 1.2–7.09 ± 0.96 ka; (ii) 5.66 ± 0.86–4.5 ± 0.75 ka; (iii) 3.94 ± 0.605–3.45 ± 0.6 ka; (iv) 2.66 ± 0.315–2.3 ± 0.4 ka; and (v) after 1960 to the present day.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Geography Federal University of Triângulo Mineiro (UFTM), MGDepartment of Geography and Environmental Planning São Paulo State University (UNESP), SPDepartment of Geography and Environmental Planning São Paulo State University (UNESP), SPFAPESP: 2012/20513-0FAPESP: 2013/15830-9Federal University of Triângulo Mineiro (UFTM)Universidade Estadual Paulista (UNESP)de Godoi Pinton, LeandroLupinacci, Cenira Maria [UNESP]2022-04-28T19:47:09Z2022-04-28T19:47:09Z2022-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article489-502http://dx.doi.org/10.1002/jqs.3395Journal of Quaternary Science, v. 37, n. 3, p. 489-502, 2022.1099-14170267-8179http://hdl.handle.net/11449/22285310.1002/jqs.33952-s2.0-85118996658Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Quaternary Scienceinfo:eu-repo/semantics/openAccess2022-04-28T19:47:09Zoai:repositorio.unesp.br:11449/222853Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:49:38.516140Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
title Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
spellingShingle Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
de Godoi Pinton, Leandro
colluvium
cuesta landscape
optically stimulated luminescence (OSL)
paleoclimate
Quaternary geomorphology
title_short Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
title_full Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
title_fullStr Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
title_full_unstemmed Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
title_sort Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
author de Godoi Pinton, Leandro
author_facet de Godoi Pinton, Leandro
Lupinacci, Cenira Maria [UNESP]
author_role author
author2 Lupinacci, Cenira Maria [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Federal University of Triângulo Mineiro (UFTM)
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv de Godoi Pinton, Leandro
Lupinacci, Cenira Maria [UNESP]
dc.subject.por.fl_str_mv colluvium
cuesta landscape
optically stimulated luminescence (OSL)
paleoclimate
Quaternary geomorphology
topic colluvium
cuesta landscape
optically stimulated luminescence (OSL)
paleoclimate
Quaternary geomorphology
description The classic models of cuesta evolution in south-eastern Brazil have temporal gaps in their denudation chronology. Here, we analyzed the colluvial deposits located on the rim of the Serra Geral escarpments in the Paraná Basin to propose a model with an absolute age range of minor landform evolution within this cuesta morphology. Correlation of the optically stimulated luminescence ages with the regional paleoclimatic conditions demonstrates that the successive phases of colluviation reflect either short-term intervals of variability in moisture availability or dry periods in the Holocene. The potential effects of other contributing factors (vegetation changes, local geomorphic settings and human activity) add complexity to the denudation responsible for the development of the investigated geomorphic chronosequences. The proposed model consists of five stages of hillslope sediment remobilization that were responsible for further remodeling of the minor vertical steps during the following chronological distribution: (i) 9.13 ± 1.2–7.09 ± 0.96 ka; (ii) 5.66 ± 0.86–4.5 ± 0.75 ka; (iii) 3.94 ± 0.605–3.45 ± 0.6 ka; (iv) 2.66 ± 0.315–2.3 ± 0.4 ka; and (v) after 1960 to the present day.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-28T19:47:09Z
2022-04-28T19:47:09Z
2022-04-01
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/10.1002/jqs.3395
Journal of Quaternary Science, v. 37, n. 3, p. 489-502, 2022.
1099-1417
0267-8179
http://hdl.handle.net/11449/222853
10.1002/jqs.3395
2-s2.0-85118996658
url http://dx.doi.org/10.1002/jqs.3395
http://hdl.handle.net/11449/222853
identifier_str_mv Journal of Quaternary Science, v. 37, n. 3, p. 489-502, 2022.
1099-1417
0267-8179
10.1002/jqs.3395
2-s2.0-85118996658
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Quaternary Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 489-502
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)
repository.mail.fl_str_mv
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