Non-allophanic andosols of Trindade Island, South Atlantic: a new soil order in Brazil

Página do item simplificado
dc.creatorAna Carolina Campos Mateus
dc.creatorAngélica Fortes Drummond Chicarino Varajão
dc.creatorFábio Soares de Oliveira
dc.creatorSabine Petit
dc.creatorCarlos Ernesto Gonçalves Reynaud Schaefer
dc.date.accessioned2023-04-24T21:18:39Z
dc.date.accessioned2025-09-09T01:33:44Z
dc.date.available2023-04-24T21:18:39Z
dc.date.issued2020-07-16
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.format.mimetypepdf
dc.identifier.doihttp://doi.org/10.36783/18069657rbcs20200007
dc.identifier.issn1806-9657
dc.identifier.urihttps://hdl.handle.net/1843/52436
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofRevista Brasileira de Ciência do Solo
dc.rightsAcesso Aberto
dc.subjectVulcões
dc.subjectIlhas - Atlântico, Oceano
dc.subjectCiência do solo
dc.subjectSolo
dc.subject.otherVolcanic island
dc.subject.otherAndic properties
dc.subject.otherAndisols
dc.subject.otherHalloysite
dc.titleNon-allophanic andosols of Trindade Island, South Atlantic: a new soil order in Brazil
dc.typeArtigo de periódico
local.citation.epage22
local.citation.spagee0200007
local.citation.volume44
local.description.resumoThe pedological studies carried out so far in Trindade Island (TI) have obtained patchy evidences of allophane, without detailed mineralogical and micromorphological studies to confirm the occurrence of Andosols in TI. Therefore, in this study, the mineralogical, micromorphological, physical and chemical characterization of four soil profiles from Vulcão do Paredão (P1) and Morro Vermelho formations (P2, P3, and P4) were carried on the latest volcanic events in Brazil from Trindade Island (TI) with the aim of to evaluate the presence of Andosols in this oceanic island. Profiles P1 and P2 are developed on pyroclastic bombs, and show, respectively, A-Bi- C and decapitated A-C horizons, whereas P3 and P4 are developed on lapillitic and bomb pyroclasts, show A-C horizons. The soil profiles have a reddish and brownish clayey matrix, are highly friable and show a plastic consistency. Their microstructures are granular, single grain and intergrain microaggregate, in which aggregates display an undifferentiated b-fabric. The mineralogical constituents of the bulk fraction are biotite, hematite, magnetite, ilmenite, pyroxene, olivine, halloysite, goethite, anatase, and rutile. The clay fraction is marked by the presence of halloysite, ferrihydrite, and little amounts of allophane. All soils presented andic properties and can be classified as non-allophanic Andosols. In addition, micromorphological features closely resemble those reported in Andosols from other volcanic islands from elsewhere. The predominance of halloysite in the clay fraction formed by alteration of sideromelane, suggests that allophane would be an intermediate phase of this rapid transformation favored by the wet climate conditions of the highest parts of TI.
local.identifier.orcidhttps://orcid.org/0000-0001-6345-1835
local.identifier.orcidhttps://orcid.org/0000-0002-9930-1801
local.identifier.orcidhttps://orcid.org/0000-0002-1450-7609
local.identifier.orcidhttps://orcid.org/0000-0002-3704-7537
local.identifier.orcidhttps://orcid.org/0000-0001-7060-1598
local.publisher.countryBrasil
local.publisher.departmentIGC - DEPARTAMENTO DE GEOGRAFIA
local.publisher.initialsUFMG
local.url.externahttps://www.rbcsjournal.org/article/non-allophanic-andosols-of-trindade-island-south-atlantic-a-new-soil-order-in-brazil/

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
non-allophanicandosols.pdf
Tamanho:
2.1 MB
Formato:
Adobe Portable Document Format
Baixar

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG