Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSantos, Marcelo Cabral-
Autor(es): dc.creatorVarajão, Angélica Fortes Drummond Chicarino-
Autor(es): dc.creatorYvon, Jacques-
Data de aceite: dc.date.accessioned2019-11-06T13:30:37Z-
Data de disponibilização: dc.date.available2019-11-06T13:30:37Z-
Data de envio: dc.date.issued2014-11-20-
Data de envio: dc.date.issued2014-11-20-
Data de envio: dc.date.issued2004-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4010-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/556848-
Descrição: dc.descriptionThis work deals with macromorphological, mineralogical, micromorphological and geochemical studies in clayey bodies from Quadrilátero Ferrı́fero in order to define their genesis and formation conditions in this geologic province from Minas Gerais State. Methodologies, based on the description of outcrops and drill cores, using X-ray diffraction (XRD), differential and gravimetric thermal analyses (DTA-TG), scanning electron microscopy (SEM), optical analysis of thin sections and chemical analyses allowed for the definition of two different genetic types of clayey bodies. One type, SET 1, occurs upon saprolitic material from Paleoproterozoic rocks in unconformity contact. It is constituted, from the base to the top, by four facies: nodular, ferruginous kaolinitic, mottled kaolinitic, and massive kaolinitic. The origin of this set is related to the deposition of lateritic materials by gravitational process. The faciological differentiation of this set is related to the syn-depositional process and postdepositional mechanisms of ferruginization and deferruginization. The second type, SET 2, is composed by an ilmenitic–kaolinitic tabular facies in discordant relationships with the saprolite material from Paleoproterozoic rocks. The origin of this second set is related to “in situ” alteration of intrusive rocks of acidic composition.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico CATENA concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3474340655934.-
Palavras-chave: dc.subjectKaolinite-
Palavras-chave: dc.subjectLateritic profile-
Palavras-chave: dc.subjectMicromorphology-
Palavras-chave: dc.subjectWeathering-
Título: dc.titleGenesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil.-
Aparece nas coleções:Repositório Institucional - UFOP

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