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Soil-chronosequence and Quaternary landscape evolution at the marine terraces of Harmony Point, Nelson Island, Maritime Antarctica.
Rodrigues, William F; Machado, Mariana R; Oliveira, Fábio S DE; Schaefer, Carlos Ernesto G R; Leite, Mariângela G P; Michel, Roberto F M; Gauzzi, Teodoro.
Afiliação
  • Rodrigues WF; Federal University of Ouro Preto, Department of Geology, Pandiá Calógeras St., s/n, 35400-000 Ouro Preto, MG, Brazil.
  • Machado MR; Federal University of Minas Gerais, Departament of Geography, Institute of Geosciences, Antônio Carlos Av., 662, 31270-901 Belo Horizonte, MG, Brazil.
  • Oliveira FS; Federal University of Minas Gerais, Departament of Geography, Institute of Geosciences, Antônio Carlos Av., 662, 31270-901 Belo Horizonte, MG, Brazil.
  • Schaefer CEGR; Federal University of Viçosa, Department of Soil, PH Rolfs Av., 36570-000 Viçosa, MG, Brazil.
  • Leite MGP; Federal University of Ouro Preto, Department of Geology, Pandiá Calógeras St., s/n, 35400-000 Ouro Preto, MG, Brazil.
  • Michel RFM; UniBH (Centro Universitário Belo Horizonte), Prof. Mário Werneck Av., 1685, 30455-610 Belo Horizonte, MG, Brazil.
  • Gauzzi T; Universidade Federal de Minas Gerais, Centro de Microscopia, Antônio Carlos Av., 662, 30123-970 Belo Horizonte, MG, Brazil.
An Acad Bras Cienc ; 94(suppl 1): e20201141, 2022.
Article em En | MEDLINE | ID: mdl-35384970
This study characterized the physical, chemical, macro- and micromorphological soil properties from three successive marine terrace levels from Harmony Point (Nelson Island, Maritime Antarctica) in order to understand the pedological signatures of Quaternary coastal landscape evolution of Maritime Antarctica. Soils were sampled on the Late Holocene beach (current beach) and Mid Holocene marine terraces higher up, at 3, 8, and 12 m a.s.l. At the lower levels, the predominant soils were Gelorthents, whereas Haplogelepts dominate the higher terraces. Soil properties are mostly influenced by parent material and faunal activity, in which cryoclastic (thermal weathering) and phosphatization are the main soil-forming processes. Soils from the upper levels are more developed, deeper with reddish colors, granular structures and incipient formation B horizon. These horizonation features highlight that soils vary according with age of glacier-isostatic terrace uplift, representing a Quaternary soil chronosequence. All marine terrace levels are Ornithogenic soils, at varying degrees. However, the presence of old bird nesting sites for long periods led to formation of phosphatic horizons, stable Fe-phosphate minerals and abundant vegetation in the highest terraces of this part of Maritime Antarctica.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Microbiologia do Solo Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Microbiologia do Solo Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil