| spelling |
2023-04-25T20:30:31Z2023-04-25T20:30:31Z2020-07-011611742https://doi.org/10.5281/zenodo.39374752317-0611http://hdl.handle.net/1843/52479https://orcid.org/0000-0002-2531-7165https://orcid.org/0000-0002-9930-1801https://orcid.org/0000-0002-1450-7609https://orcid.org/0000-0001-7679-5944https://orcid.org/0000-0002-7358-011XO estudo investigou a evolução da paisagem da Serra do Espinhaço Meridional (SdEM), MG, através da caracterização macromorfológica, mineralógica, micromorfológica e química de solos desenvolvidos nas principais unidades lito-estratigráficas da região. Ocorrem principalmente Neossolos e Cambissolos, decapeados e cobertos discordantemente por um paleopavimento. Considerando as variações climáticas, as superfícies de erosão e as recentes datações dos solos, entendemos que após um longo período sob condições desérticas no Cretáceo (Superfície Pós-Gondwana) até o Paleoceno (Superfície Sul-Americana), ocorreu uma abrupta variação climática no Eoceno, em que condições quentes e úmidas formaram os mantos de alteração e o desmantelamento dos veios de quartzo presentes nas unidades subjacentes (Supergrupo Espinhaço). Estas condições também estiveram presentes durante o Mioceno, desaparecendo no Plioceno, onde a instalação de um novo clima desértico promoveu o desaparecimento da vegetação e a consequente erosão-decapitação dos perfis de solo. Neste contexto se formou o paleopavimento regional supracitado, interpretado como contemporâneo à Superfície Velhas. Sobre ele, durante o Quaternário, formaram-se inúmeras turfeiras, que sugerem condições climáticas regionais amenas.The study investigated the landscape evolution of Serra do Espinhaço Meridional (SdEM), MG, through the macromorphological, mineralogical, micromorphological and chemical characterization of soils developed from the main regional lithostratigraphic units. There are mainly Neossols and Cambisols, decapitated by erosion and covered discordantly by a paleopavement. Considering climatic variations, erosion surfaces and recent soil dating, we understand that after long desert conditions in the Cretaceous (Post-Gondwana Surface) until the Paleocene (South American Surface), there was an abrupt climatic variation in the Eocene, in which hot and humid conditions formed the weathered mantles and the dismantling of the quartz veins from the underlying geological units (Supergroup Espinhaço). These conditions were also present during the Miocene, disappearing in the Pliocene, where the installation of a new desert climate promoted the disappearance of vegetation and the consequent erosiondecapitating of soil profiles. In this context, the aforementioned regional paleo-pavement was formed and interpreted as contemporary to the Surface Velhas. Over it, during the Quaternary, countless peatlands were formed, suggesting mild regional climatic conditions.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorporUniversidade Federal de Minas GeraisUFMGBrasilIGC - DEPARTAMENTO DE GEOGRAFIARevista EspinhaçoGeociênciasMudanças climáticasSolosCiência do soloPaleopavimentoSolos decapitadosVariações climáticasCouraçasSolos e superfícies de erosão: uma contextualização da evolução da paisagem na Serra do Espinhaço Meridional (SdEM), Minas GeraisSoils and erosion surfaces: a contextualization of landscape evolution in the Southern Espinhaço Range (SdEM), Minas Geraisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://revistas.ufvjm.edu.br/revista-espinhaco/article/view/155Cesar Augusto Chicarino VarajaoAngélica Fortes Drummond Chicarino VarajãoFábio Soares de OliveiraHelen Nébias BarretoAndré Augusto Rodrigues Salgadoapplication/pdfinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/52479/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALsolosesuperficiesdeerosão.pdfsolosesuperficiesdeerosão.pdfapplication/pdf2540658https://repositorio.ufmg.br/bitstream/1843/52479/2/solosesuperficiesdeeros%c3%a3o.pdf9578a64e22902b6a536da8b9f0082b3dMD521843/524792023-04-25 17:30:32.044oai:repositorio.ufmg.br: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Repositório InstitucionalPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-04-25T20:30:32Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false
|