Geochronological and paleoenvironmental reconstruction of colluvial deposits in a cuesta landscape in south-eastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | |
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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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 |
|
_version_ |
1808129466395787264 |