Geochemistry of Antarctic periglacial soils from Harmony Point, Nelson Island.

dc.contributor.authorRodrigues, William Fortes
dc.contributor.authorOliveira, Fábio Soares de
dc.contributor.authorSchaefer, Carlos Ernesto Gonçalves Reynaud
dc.contributor.authorAraújo, Teodoro Gauzzi Rodrigues de
dc.contributor.authorLeite, Mariangela Garcia Praça
dc.date.accessioned2022-09-14T19:41:00Z
dc.date.available2022-09-14T19:41:00Z
dc.date.issued2021pt_BR
dc.description.abstractLittle is known about the geochemical baseline of Antarctic soils in diferent environments. We investigated the soil geo- chemistry of the two main landscape units of Harmony Point (Nelson Island, Maritime Antarctica): the coastal domain and the upper platform. Fourteen soil samples (seven in each landscape unit) were divided according to depth (hA for surface and hC for subsurface horizons) and characterized by their major, trace elements and REE concentrations. The concentration of major elements (SiO2, TiO2, Al2O3, Fe2O3, MgO, CaO, MnO, and K2O) were determined by X-ray fuorescence, whereas trace elements were quantifed by inductively coupled plasma-optical emission spectrometry (Co, Ni, As, Cd, Pb, Ba, Cr, Cu, V, Zn, and Zr) and REE by inductively coupled plasma mass spectrometry. The results showed geochemical variation with depth, either related to pedological processes (phosphatization, humifcation, podzolization, and cryoturbation), and parent material constitution (andesitic basalt in upper platform and mixed volcanic sediments in coastal domain). The main chemical aspects distinguishing Harmony Point soils from other Maritime Antarctic soils from the vicinity are: (i) higher CIA index; (ii) P2O5 enrichment due to bird guano and enhanced pedogenesis; (iii) REE retention; (iv) enrichment in Fe2O3 and S concentrations. The REE concentration was infuenced by weathering processes combined with allochthonous inputs, such as volcanic ashes and iceberg-transported granitic boulders at the coastal domain. The Harmony Point soils are little subjected to anthropic impacts, so they can be used as a basis for environmental monitoring programs in the Maritime Antarctica region.pt_BR
dc.identifier.citationRODRIGUES, W. F. et al. Geochemistry of Antarctic periglacial soils from Harmony Point, Nelson Island. Environmental Earth Sciences, v. 80, 2021. Disponível em: <https://link.springer.com/article/10.1007/s12665-021-09713-4>. Acesso em: 29 abr. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.1007/s12665-021-09713-4pt_BR
dc.identifier.issn1866-6299
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/15271
dc.identifier.uri2https://link.springer.com/article/10.1007/s12665-021-09713-4pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectMaritime Antarcticapt_BR
dc.subjectChemical weatheringpt_BR
dc.subjectWeathering ratept_BR
dc.subjectREE enrichmentpt_BR
dc.titleGeochemistry of Antarctic periglacial soils from Harmony Point, Nelson Island.pt_BR
dc.typeArtigo publicado em periodicopt_BR

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura Disponível
Nome:
ARTIGO_GeochemistryAntarticPeriglacial.pdf
Tamanho:
1.77 MB
Formato:
Adobe Portable Document Format
Descrição:

Licença do pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura Disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição: